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Support AutoHeal and AutoScale with External Monitoring Tools via FM/PM Interfaces

https://blueprints.launchpad.net/tacker/+spec/support-auto-lcm

Problem description

This spec provides some implementations for supporting AutoHeal and AutoScale with external monitoring tools such as Prometheus¹. The implementations includes ETSI NFV-SOL 002 v3.3.1² and ETSI NFV-SOL 003 v3.3.1³ based Fault Management / Performance Management interface and a sample implementation of Prometheus Plugin.

The Fault Management and Performance Management interfaces are specified in ETSI NFV-SOL 002 v3.3.1⁴ and ETSI NFV-SOL 003 v3.3.1⁵, NFVO or EM takes the initiative in making decisions on healing or scaling.

The Prometheus Plugin has a interface that is called from the External Monitoring Tool and supports data model conversion related to Prometheus monitoring data.

Note

* If there are no special instructions, the Client described in this spec default to NFVO/EM, and VNFM default to Tacker.

Proposed change

The following changes are needed:

Add support for Fault Management interface specified in SOL002/003
- Add VNF Fault Management interface:
  - Get Alarm(s)
    - GET /vnffm/v1/alarms to get all alarms.
    - GET /vnffm/v1/alarms/{alarmId} to get the specified alarm.
  - Acknowledge Alarm
    - PATCH /vnffm/v1/alarms/{alarmId} to change target Alarm to be confirmed.
  - Subscribe
    - POST /vnffm/v1/subscriptions to create a new subscription.
  - Get Subscription(s)
    - GET /vnffm/v1/subscriptions to get all subscriptions.
    - GET /vnffm/v1/subscriptions/{subscriptionId} to get the specified subscription.
  - Delete Subscription
    - DELETE /vnffm/v1/subscriptions/{subscriptionId} to delete the specified subscription.
- Send notification to Client
  - POST <Client URI from subscriptions> to notify Client that Tacker received an alarm.
  - GET <Client URI from subscriptions> to confirm that the URI of Client is correct.
Add support for Performance Management interface specified in SOL002/003
- Add VNF Performance Management interface:
  - Create or Update a PM job
    - POST /vnfpm/v2/pm_jobs to create a PM job.
    - PATCH /vnfpm/v2/pm_jobs/{pmJobId} to update the specified PM job.
  - Get PM job(s)
    - GET /vnfpm/v2/pm_jobs to get all PM jobs.
    - GET /vnfpm/v2/pm_jobs/{pmJobId} to get the specified PM job.
  - Delete a PM job
    - DELETE /vnfpm/v2/pm_jobs/{pmJobId} to delete the specified PM job.
  - Get PM report
    - GET /vnfpm/v2/pm_jobs/{pmJobId}/reports/{reportId} to get the specified performance report.
- Send notification to Client
  - POST <Client URI for notifications> to notify Client that Tacker received a PM related event.
  - GET <Client URI for notifications> to confirm that the URI of Client is correct.
Add support of RESTful API for communications between Tacker and External Monitoring Tool
- POST /alert to receive the FM alert sent from External Monitoring Tool.
- POST /pm_event to receive the PM event sent from External Monitoring Tool.
Create new DB tables
- Create a new DB table for FM alarms.
- Create a new DB table for FM subscription.
- Create a new DB table for PM jobs.
- Create a new DB table for PM reports.

Note

* The External Monitoring Tool is a monitoring service. That is not included in Tacker. Operators implement the External Monitoring Tool. The External Monitoring Tool uses metrics service such as Prometheus and notifies FM/PM events using the Prometheus Plugin interface.

Prometheus Plugin

The Prometheus Plugin is a sample implementation that operates Prometheus specific function such as converting from Prometheus specific data model to SOL002/003⁶ ⁷ compliant data model.

The Prometheus Plugin is an optional feature. Tacker will decide whether to enable it according to the content of the configuration file. The detail of configuration file is described in ⁸.

AutoHeal on FM alert trigger

When the External Monitoring Tool detects that the CNF has failed, it will send alert messages to Tacker. Tacker will convert the alert to alarm and store it in the DB.

NFVO/EM gets alarm periodically (Polling Mode) or triggered by notification (Notification Mode) via FM interface based on SOL002/003⁹ ¹⁰.

The Polling Mode is a method in which NFVO/EM periodically inquiries about monitoring information from VNFM. and The Notification Mode is a method in which VNFM notifies NFVO/EM in the Subscribe/Notify subscription model.

Design of heal operation in FM Polling Mode

The following is a schematic diagram of heal in Polling Mode:

+------------------------+
|                        |
|    Client (NFVO/EM)    |
|                        |
+--+---------+-----------+
5. Heal |         | 4. Get Alarms and return result
+------|---------|------------------------------------------------------------+
|      |         |                                                       VNFM |
|  +---|---------|---------+ +---------------------------------+              |
|  |   |         |  Tacker | |                      Tacker     |              |
|  |   |         |  Server | |                      Conductor  |              |
|  |   |   +-----v------+  | |                                 |   +--------+ |
|  |   |   | VnfFm      +------------------------------------------> Tacker | |
+----------------+          |  |   |   | Controller |  | |         +--------------+        |   |   DB   | |
|  External      |          |  |   |   +------------+  | |  +------+ VnfFm        +------------>        | |
|  Monitoring    |          |  |   |                   | |  |      | Driver       |        |   +--------+ |
|  Tool          | 2. POST  |  |   |                   | |  |      +--------------+        |              |
|  (based on     |    alert |  |   |   +------------+  | |  | 3. Convert alert to alarm    |              |
|   Prometheus)  +---------------------> Prometheus +-------+                              |              |
+--+-------------+          |  |   |   | Plugin     |  | |                                 |              |
^                        |  |   |   +------------+  | |                                 |              |
| 1. Collect metrics     |  |   |                   | |                                 |              |
|                        |  |   |   +------------+  | |         +--------------+        |              |
|                        |  |   +---> Vnflcm     +--------------> VmfLcmDriver +---+    |              |
|                        |  |       | Controller |  | |         +--------------+   |    |              |
|                        |  |       +------------+  | |                  +---------v--+ |              |
|                        |  |                       | |                  | Infra      | |              |
|                        |  |                       | |                  | Driver     | |              |
|                        |  |                       | |                  +----+-------+ |              |
|                        |  +-----------------------+ +-----------------------|---------+              |
|                        +----------------------------------------------------|------------------------+
|                                                                             |
|                        +----------------------------------------------------|------------+
|                        |  CISM/CIS                                          |            |
|                        |                  +---------------+-----------------+            |
|                        | 6. Delete failed |               | 7. Create new                |
|                        |    CNF           |               |    CNF                       |
|                        |         +--------v----+   +------v------+    +-------------+    |
|                        |         | +--------+  |   | +--------+  |    |             |    |
+----------------------------------> | CNF    |  |   | | CNF    |  |    |             |    |
|         | +--------+  |   | +--------+  |    |             |    |
|         |      Worker |   |      Worker |    |      Master |    |
|         +-------------+   +-------------+    +-------------+    |
+-----------------------------------------------------------------+

External Monitoring Tool collects metrics and decides whether triggering alert is needed or not.
External Monitoring Tool sends POST request to /alert/vnf_instances/{vnf_instance_id}.
Tacker receives informed alert, converts it to alarm, and saves it to Tacker DB.
The Client sends a request at regular intervals to get the alarm in the Tacker. Tacker searches Tacker DB with the query condition specified by the Client, and returns the alarm that matches the condition to the Client.
The Client recognizes the failure of the CNF from the alarm and sends a heal request to the Tacker.
Heal operation is triggered, old CNF is deleted.
New CNF is created.

Request parameters for operation in FM Polling Mode

The detail of API is described at REST API impact.

Sequence for operation in FM Polling Mode

The following describes the processing flow of the Tacker after the External Monitoring Tool sends the alert.

seqdiag {

node_width = 100; edge_length = 150;

"External Monitoring Tool" "Prometheus-Plugin" "VnfFmDriver" "Tacker DB"

"External Monitoring Tool" -> "Prometheus-Plugin": [label = "1. Send alert to the specified URI"];
"Prometheus-Plugin" -> "Prometheus-Plugin": [label = "2. Check items of prometheus_plugin from cfg.CONF.tacker", note = "If prometheus_plugin is False, asynchronous task is over"];
"Prometheus-Plugin" -> "Prometheus-Plugin": [label = "3. Determine whether the alert is AutoHeal or AutoScale", note = "If it is scale, refer to the processing flow of AutoScale"];
"Prometheus-Plugin" -> "Tacker DB": [label = "4. Find the corresponding ComputeResource from the DB"];
"Prometheus-Plugin" <-- "Tacker DB": [label = "InstantiatedVnfInfo.vnfcResourceInfo.computeResource"];
"Prometheus-Plugin" -> "Prometheus-Plugin": [label = "5. Convert received alert to alarm"];
"Prometheus-Plugin" -> "VnfFmDriver": [label = "6. Execute VnfFmDriver"];
"VnfFmDriver" -> "Tacker DB": [label = "7. Save alarm to DB"];

"VnfFmDriver" <-- "Tacker DB" "Prometheus-Plugin" <-- "VnfFmDriver"

}

External Monitoring Tool detects fault event via Prometheus and inform the alert to specified URI(Tacker).
Prometheus Plugin obtains values from cfg.CONF.tacker.prometheus_plugin to determine whether to enable this function.
Prometheus Plugin judges what kind of action to be performed according to the function_type field of the labels in the alert.
- When the labels.function_type is vnffm, AutoHeal is performed.
- When the labels.function_type is vnfpm, AutoScale is performed. See sequence-pm-operation.
Prometheus Plugin finds the corresponding CNF instance according to the value of the label in the alert.
Prometheus Plugin converts the alert to an alarm.
Prometheus Plugin calls VnfFmDriver and sends the alarm to it.
VnfFmDriver saves the alarm in the DB.

The following describes the Client's processing flow for Tacker using Polling Mode to AutoHeal.

seqdiag {

node_width = 100; edge_length = 150;

"Client" "Tacker-server" "Tacker-conductor" "VnfFmDriver" "Tacker DB"

"Client" -> "Tacker-server": [label = "8. Get alarms"];
"Tacker-server" -> "Tacker-conductor": [label = "9. Trigger synchronization task"];
"Tacker-conductor" -> "VnfFmDriver": [label = "10. Get alarms"];
"VnfFmDriver" -> "Tacker DB": [label = "11. Get alarms from DB according to conditions"];
"VnfFmDriver" <-- "Tacker DB": [label = "Alarms"];
"Tacker-conductor" <-- "VnfFmDriver": [label = "Alarms"];
"Tacker-server" <-- "Tacker-conductor": [label = "Alarms"];
"Client" <-- "Tacker-server": [label = "Alarms"];
"Client" -> "Client": [label = "12. Get VNFC information from alarm", note = "If no alarm is returned, the processing is over"];
"Client" -> "Tacker-server": [label = "13. Heal specified vnfc"];
"Tacker-server" -> "Tacker-conductor": [label = "14. Trigger asynchronous task", note = "The same with the default heal operation"];
"Client" <-- "Tacker-server": [label = "Response 202 Accepted"];

}

The Client sends a request to the Tacker to get the alarms of the specified conditions.
The request is processed synchronously.
Tacker-conductor calls VnfFmDriver to get the alarm.
VnfFmDriver filters out the alarms that meet the conditions according to the conditions in the request, and returns the result.
After the Client obtains the VNFC information from the alarm, it sends a request to the Tacker to heal the VNFC.
From this step, it is completely the same with the default heal operation.

Design of heal operation in FM Notification Mode

The following is a schematic diagram of heal in Notification Mode:

+------------------------+
|                        |       5. Send alarm notification
|   Client (NFVO/EM)     <-------------------+
|                        |                   |
+--+---------+-----------+                   |
6. Heal |         | 1. Create subscription        |
+------|---------|-------------------------------|----------------------------+
|      |         |                               |                       VNFM |
|  +---|---------|---------+ +-------------------|-------------+              |
|  |   |         |  Tacker | |                   |  Tacker     |              |
|  |   |         |  Server | |                   |  Conductor  |              |
|  |   |   +-----v------+  | |                   |             |   +--------+ |
|  |   |   | VnfFm      +------------------------+-----------------> Tacker | |
+----------------+          |  |   |   | Controller |  | |         +---------+----+        |   | DB     | |
|  External      |          |  |   |   +------------+  | |  +------> VnfFm        +------------>        | |
|  Monitoring    |          |  |   |                   | |  |      | Driver       |        |   +--------+ |
|  Tool          | 3. POST  |  |   |                   | |  |      +--------------+        |              |
|  (based on     |    alert |  |   |   +------------+  | |  |  4. Convert alert to alarm   |              |
|   Prometheus)  +---------------------> Prometheus +-------+                              |              |
+--+-------------+          |  |   |   | Plugin     |  | |                                 |              |
^                        |  |   |   +------------+  | |                                 |              |
| 2. Collect metrics     |  |   |                   | |                                 |              |
|                        |  |   |   +------------+  | |         +--------------+        |              |
|                        |  |   +---> Vnflcm     +--------------> VmfLcmDriver +---+    |              |
|                        |  |       | Controller |  | |         +--------------+   |    |              |
|                        |  |       +------------+  | |                  +---------v--+ |              |
|                        |  |                       | |                  | Infra      | |              |
|                        |  |                       | |                  | Driver     | |              |
|                        |  |                       | |                  +----+-------+ |              |
|                        |  +-----------------------+ +-----------------------|---------+              |
|                        +----------------------------------------------------|------------------------+
|                                                                             |
|                        +----------------------------------------------------|------------+
|                        |  CISM/CIS                                          |            |
|                        |                  +---------------+-----------------+            |
|                        | 7. Delete failed |               | 8. Create new                |
|                        |    CNF           |               |    CNF                       |
|                        |         +--------v----+   +------v------+    +-------------+    |
|                        |         | +--------+  |   | +--------+  |    |             |    |
+----------------------------------> | CNF    |  |   | | CNF    |  |    |             |    |
|         | +--------+  |   | +--------+  |    |             |    |
|         |      Worker |   |      Worker |    |      Master |    |
|         +-------------+   +-------------+    +-------------+    |
+-----------------------------------------------------------------+

The Client sends a request to the Tacker to create a subscription.

Note

During the create subscription, Tacker sends a test notification request to the client's callback URI. The callback URI is included in the request parameter of the create subscription request.
Same as step 1 of the Polling Mode.
Same as step 2 of the Polling Mode.
Same as step 3 of the Polling Mode.
VnfFmDriver finds all subscriptions in the DB and matches the alerts to them. If there is a subscription that can match successfully, the alarm is sent to the specified path of the Client. If the match is not successful, the processing ends.
Same as step 5 of the Polling Mode.
Same as step 6 of the Polling Mode.
Same as step 7 of the Polling Mode.

Request parameters for operation in FM Notification Mode

The detail of API is described at REST API impact.

Sequence for operation in FM Notification Mode

The following describes the Client's processing flow for Tacker using Notification Mode to AutoHeal.

seqdiag {

node_width = 90; edge_length = 100;

"Client" "External Monitoring Tool" "Prometheus-Plugin" "Tacker-server" "Tacker-conductor" "VnfFmDriver" "Tacker DB"

"Client" -> "Tacker-server": [label = "1. Create subscription"];
"Tacker-server" -> "Tacker-conductor": [label = "Trigger synchronization task"];
"Tacker-conductor" -> "VnfFmDriver": [label = "execute VnfFmDriver"];
"VnfFmDriver" -> "VnfFmDriver": [label = "Get the callback_uri in the subscription"];
"VnfFmDriver" -> "Client": [label = "Send a GET request to the callback_uri in the Client."];
"VnfFmDriver" <-- "Client": [label = "Response 204 No Content"];
"VnfFmDriver" -> "Tacker DB": [label = "Save subscription to DB"];

"VnfFmDriver" <-- "Tacker DB" "Tacker-conductor" <-- "VnfFmDriver" "Tacker-server" <-- "Tacker-conductor" "Client" <-- "Tacker-server" [label = "Response 201 Created"]; "External Monitoring Tool" -> "Prometheus-Plugin" [label = "2. Send alert to the specified URI"]; "Prometheus-Plugin" -> "Prometheus-Plugin" [label = "3. Check items of prometheus_plugin from cfg.CONF.tacker", note = "If prometheus_plugin is False, asynchronous task is over"]; "Prometheus-Plugin" -> "Prometheus-Plugin" [label = "4. Determine whether the alert is AutoHeal or AutoScale", note = "If it is scale, refer to the processing flow of AutoScale"]; "Prometheus-Plugin" -> "Tacker DB" [label = "5. Find the corresponding ComputeResource from the DB"]; "Prometheus-Plugin" <-- "Tacker DB" [label = "InstantiatedVnfInfo.vnfcResourceInfo.computeResource"]; "Prometheus-Plugin" -> "Prometheus-Plugin" [label = "6. Convert received alert to alarm"]; "Prometheus-Plugin" -> "VnfFmDriver" [label = "7. execute VnfFmDriver"]; "VnfFmDriver" -> "Tacker DB" [label = "8. Save alarm to DB"]; "VnfFmDriver" <-- "Tacker DB" "VnfFmDriver" -> "Tacker DB" [label = "9. Get subscriptions from DB"]; "VnfFmDriver" <-- "Tacker DB" "VnfFmDriver" -> "VnfFmDriver" [label = "10. Determine whether the alarm matches the subscriptions.", note = "If it does not match, the processing ends"]; "VnfFmDriver" -> "Client" [label = "11. Send a Notify Alarm request to the Client"]; "VnfFmDriver" <-- "Client" [label = "Response 204 No Content"]; "Prometheus-Plugin" <-- "VnfFmDriver" "Client" -> "Client" [label = "12. Get VNFC information from alarm", note = "If no alarm is returned, the processing is over"]; "Client" -> "Tacker-server" [label = "13. Heal specified vnfc"]; "Tacker-server" -> "Tacker-conductor" [label = "14. Trigger asynchronous task", note = "The same with the default heal operation"]; "Client" <-- "Tacker-server" [label = "Response 202 Accepted"];

}

The Client sends a request to create a subscription to the Tacker. After Tacker receives the subscription, it will get the callback_uri in it. In order to verify the correctness of the callback_uri, VnfFmDriver sends a request to the callback_uri address of Client. After getting the normal response HTTP 204 No Content from the Client, the Tacker will save the subscription to the DB.

From step 2 to 8, processes are same as step 1-7 of the Polling method.

VnfFmDriver gets all the subscriptions in the DB.
VnfFmDriver judges whether the alarm can be matched with subscriptions, if it does not match, the processing ends.
If the match is successful, VnfFmDriver sends a Notify Alarm request to the Client's callback_uri address. After the Client receives the request and processes it, it returns HTTP 204 No Content by default.

From step 12 to 14, processes are same as step 12-14 of the Polling method.

AutoScale on PM event trigger

Tacker has a configuration value in tacker.conf file that indicates uri of alert manager. Prometheus Plugin converts from PM job schema to prometheus schema when a PM job has been created.

When the External Monitoring Tool detects that the CNF have some PM events, it will send event messages to Tacker. After Tacker receives the event, it will convert the event to report and store it in the DB. At this time, according to SOL002/003¹¹ ¹² 6. VNF Performance Management interface.

Design of scale operation in PM

The following is a schematic diagram of scale:

+------------------------+
|                        |       8. Send report notification
|   Client (NFVO/EM)     <-------------------+
|                        |                   |
+--+---------+-----------+                   |
   |         | 1. Create PM job              |
10.  Scale |         | 9. Get PM report              |
+------|---------|-------------------------------|----------------------------+
|      |         |                               |                       VNFM |
|  +---|---------|---------+ +-------------------|-------------+              |
|  |   |         |  Tacker | |                   |  Tacker     |              |
|  |   |         |  Server | |                   |  Conductor  |              |
|  |   | +-------v------+  | |                   |             |   +--------+ |
|  |   | | VnfPm        +------------------------+-----------------> Tacker | |
|  |   | | ControllerV2 |  | |         +---------+----+        |   | DB     | |
+----------------+          |  |   | +---------+----+  | |  +------> VnfPm        +------------>        | |
|  External      |          |  |   | 2. set    |       | |  |      | DriverV2     |        |   +--------+ |
|  Monitoring    | 5. POST  |  |   |    PM job |       | |  |      +--------------+        |              |
|  Tool          |    event |  |   |   +-------v----+  | |  | 7. Convert event to report   |              |
|  (based on     +---------------------> Prometheus +-------+                              |              |
|   Prometheus)  <---------------------+ Plugin     |  | |                                 |              |
|                | 6. get related data |            |  | |                                 |              |
|                <---------------------+            |  | |                                 |              |
+--+-------------+ 3. set   |  |   |   +------------+  | |                                 |              |
^                 PM job |  |   |                   | |                                 |              |
| 4. Trigger event       |  |   |   +------------+  | |         +--------------+        |              |
|                        |  |   +---> Vnflcm     +--------------> VmfLcmDriver +---+    |              |
|                        |  |       | Controller |  | |         +--------------+   |    |              |
|                        |  |       +------------+  | |                  +---------v--+ |              |
|                        |  |                       | |                  | Infra      | |              |
|                        |  |                       | |                  | Driver     | |              |
|                        |  |                       | |                  +----+-------+ |              |
|                        |  +-----------------------+ +-----------------------|---------+              |
|                        +----------------------------------------------------|------------------------+
|                                                                             |
|                        +----------------------------------------------------|------------+
|                        |  CISM/CIS                                          |            |
|                        |                  +---------------+-----------------+            |
|                        |                  |               | 11. Create or Delete         |
|                        |                  |               |     CNF                      |
|                        |         +--------v----+   +------v------+    +-------------+    |
|                        |         | +--------+  |   | +--------+  |    |             |    |
+----------------------------------> | CNF    |  |   | | CNF    |  |    |             |    |
|         | +--------+  |   | +--------+  |    |             |    |
|         |      Worker |   |      Worker |    |      Master |    |
|         +-------------+   +-------------+    +-------------+    |
+-----------------------------------------------------------------+

The Client sends a request to the Tacker to create a PM job.

Note

During the create PM job, Tacker sends a test notification request to the client's callback URI. The callback URI is included in request body of create PM job request.
VnfPmControllerV2 sends PM job information to Prometheus Plugin.
Prometheus Plugin sets PM job to External Monitoring Tool.
External Monitoring Tool collects metrics and decides whether triggering event is needed or not.
External Monitoring Tool sends POST request to Tacker with specified URI.
Tacker collects data related to the PM event. From the data obtained in 5-6, The value and context corresponding to performanceMetric are determined.
Tacker receives informed event, converts it to report, and saves it to DB. Tacker also saves timestamp of the event.
VnfPmDriverV2 finds all jobs in the DB and matches the report to job. If there is a job that can match successfully, the report is sent to the specified path of the Client. If the match is not successful, the processing ends.
The Client make a request for the content of the report, then make a decision of scaling.
Scale operation is triggered, new CNF is created in case of scale-out or old CNF is deleted in case of scale-in.
New CNF is created or old CNF is deleted.

Request parameters for operation in PM

The detail of API is described at REST API impact.

Sequence for operation in PM

The following describes the Client's processing flow for Tacker to AutoScale.

seqdiag {

node_width = 90; edge_length = 100;

"Client" "External Monitoring Tool" "Prometheus-Plugin" "Tacker-server" "Tacker-conductor" "VnfPmDriverV2" "Tacker DB"

"Client" -> "Tacker-server": [label = "1. Create PM job"];
"Tacker-server" -> "Tacker-conductor": [label = "Trigger synchronization task"];
"Tacker-conductor" -> "VnfPmDriverV2": [label = "execute VnfPmDriverV2"];
"VnfPmDriverV2" -> "VnfPmDriverV2": [label = "Get the callback_uri in the PM job"];
"VnfPmDriverV2" -> "Client": [label = "Send a GET request to the callback_uri in the Client."];
"VnfPmDriverV2" <-- "Client": [label = "Response 204 No Content"];
"VnfPmDriverV2" -> "Tacker DB": [label = "Save PM job to DB"];

"VnfPmDriverV2" <-- "Tacker DB" "VnfPmDriverV2" -> "Prometheus-Plugin" [label = "Set PM job to Prometheus-Plugin"]; "Prometheus-Plugin" -> "Prometheus-Plugin" [label = "Convert to Prometheus format PM job"]; "Prometheus-Plugin" -> "External Monitoring Tool" [label = "Set PM job"]; "Prometheus-Plugin" <-- "External Monitoring Tool" "VnfPmDriverV2" <-- "Prometheus-Plugin" "Tacker-conductor" <-- "VnfPmDriverV2" "Tacker-server" <-- "Tacker-conductor" "Client" <-- "Tacker-server" [label = "Response 201 Created"]; "External Monitoring Tool" -> "Prometheus-Plugin" [label = "2. Send event to the specified URI"]; "Prometheus-Plugin" -> "Prometheus-Plugin" [label = "3. Check items of prometheus_plugin from cfg.CONF.tacker", note = "If prometheus_plugin is False, asynchronous task is over"]; "Prometheus-Plugin" -> "Prometheus-Plugin" [label = "4. Determine whether the report is AutoHeal or AutoScale", note = "If it is heal, refer to the processing flow of AutoHeal"]; "Prometheus-Plugin" -> "Tacker DB" [label = "5. Find the corresponding resource from the DB"]; "Prometheus-Plugin" <-- "Tacker DB" "Prometheus-Plugin" -> "Prometheus-Plugin" [label = "6. Convert received event to report"]; "Prometheus-Plugin" -> "VnfPmDriverV2" [label = "7. execute VnfPmDriverV2"]; "VnfPmDriverV2" -> "Tacker DB" [label = "8. Save report to DB"]; "VnfPmDriverV2" <-- "Tacker DB" "VnfPmDriverV2" -> "Tacker DB" [label = "9. Get job from DB"]; "VnfPmDriverV2" <-- "Tacker DB" "VnfPmDriverV2" -> "VnfPmDriverV2" [label = "10. Determine whether the report matches the PM job.", note = "If it does not match, the processing ends"]; "VnfPmDriverV2" -> "Client" [label = "11. Send a Notify Event request to the Client"]; "VnfPmDriverV2" <-- "Client" [label = "Response 204 No Content"]; "Prometheus-Plugin" <-- "VnfPmDriverV2" "Client" -> "Client" [label = "12. Get VNFC information from report", note = "If no report is returned, the processing is over"]; "Client" -> "Tacker-server" [label = "13. Scale"]; "Tacker-server" -> "Tacker-conductor" [label = "14. Trigger asynchronous task", note = "The same with the default scale operation"]; "Client" <-- "Tacker-server" [label = "Response 202 Accepted"];

}

The Client sends a request to create a PM job to the Tacker. After Tacker receives the PM job, it will get the callback_uri in it. In order to verify the correctness of the callback_uri, VnfPmDriverV2 sends a request to the callback_uri address of Client. After getting the normal response HTTP 204 No Content from the Client, the Tacker will save the subscription to the DB.
VnfPmDriverV2 sends a PM job to Prometheus Plugin. Prometheus Plugin converts it into Prometheus format, then sends it to Prometheus.
External Monitoring Tool receives event sent from Prometheus and inform the event to specified URI(Tacker).
Prometheus Plugin obtains values from cfg.CONF.tacker.prometheus_plugin to determine whether to enable this function.
Prometheus Plugin judges what processing to perform according to the function_type field of the labels in the event.
- When the labels.function_type is vnffm, AutoHeal is performed. See sequence-fm-polling.
- When the labels.function_type is vnfpm, AutoScale is performed.
Prometheus Plugin finds the corresponding resource information according to the value of the node label in the event.
Prometheus Plugin converts the event to an report.
Prometheus Plugin calls VnfPmDriverV2 and sends the report to it.
VnfPmDriverV2 saves the report in the DB.
VnfPmDriverV2 gets all the PM job in the DB.
VnfPmDriverV2 judges whether the report can be matched with PM jobs, if it does not match, the processing ends.
If the match is successful, VnfPmDriverV2 sends a Notify Event request to the Client's callback_uri address. After the Client receives the request and processes it, it returns HTTP 204 No Content by default.
After the Client obtains the VNFC information from the report, it sends a request to the Tacker to scale the VNFC.
From this step, it is completely the same with the default scale operation.

Alternatives

None

Data model impact

Add below new db table in 'Tacker' database.

Table: AlarmV1

Name	Type	Constraint
id	varchar(255)	Pri
managedObjectId	varchar(255)	NOT NULL
vnfcInstanceIds	JSON	NULL
rootCauseFaultyResource	JSON	NULL
alarmRaisedTime	datetime	NOT NULL
alarmChangedTime	datetime	NULL
alarmClearedTime	datetime	NULL
alarmAcknowledgedTime	datetime	NULL
ackState	Enum	NOT NULL
perceivedSeverity	Enum	NOT NULL
eventTime	datetime	NOT NULL
eventType	Enum	NOT NULL
faultType	varchar(255)	NULL
probableCause	varchar(255)	NOT NULL
isRootCause	boolean	NOT NULL
correlatedAlarmIds	JSON	NULL
faultDetails	JSON	NULL

This table have id as primary key. managedObjectId will be foreign key of vnf_instances.

Table: FmSubscriptionV1

Name Type Constraint

id varchar(255) Pri

filter JSON NULL

callbackUri varchar(255) NOT NULL

authentication JSON NULL

This table have id as primary key.

Table: PmJobV2

Name	Type	Constraint
id	varchar(255)	Pri
objectType	varchar(32)	NOT NULL
objectInstanceIds	JSON	NOT NULL
subObjectInstanceIds	JSON	NULL
criteria	JSON	NOT NULL
callbackUri	varchar(255)	NOT NULL
reports	JSON	NULL
authentication	JSON	NULL

This table have id as primary key.

Table: PerformanceReportV2

Name Type Constraint

id varchar(255) Pri

jobId varchar(255) NOT NULL

entries JSON NULL

This table have id as primary key.

REST API impact

The following RESTful APIs are in compliance with SOL002/003¹³ ¹⁴ 6.VNF Performance Management interface and 7.VNF Fault Management interface.

Name: Get all alarms
Description: Allow users to filter out alarms based on query parameter in the request
Method type: GET
URL for the resource: /vnffm/v1/alarms
Query parameters:

Name Cardinality Description

Name	Cardinality	Description
filter	0..1	Attribute-based filtering expression. The following attribute names shall be supported by the Tacker in the attribute-based filtering expression: id, managedObjectId, rootCauseFaultyResource/faultyResourceType, eventType, perceivedSeverity, probableCause. For example, below URI query parameter will matching alarms with perceivedSeverity=WARNING `GET /vnffm/v1/alarms?filter=(eq,perceivedSeverity,WARNING)`

filter

0..1

Attribute-based filtering expression. The following attribute names shall be supported by the Tacker in the attribute-based filtering expression: id, managedObjectId, rootCauseFaultyResource/faultyResourceType, eventType, perceivedSeverity, probableCause. For example, below URI query parameter will matching alarms with perceivedSeverity=WARNING

GET /vnffm/v1/alarms?filter=(eq,perceivedSeverity,WARNING)

Request:

Data type	Cardinality	Description
n/a

Response:

Data type	Cardinality	Response Codes	Description
Alarm	0..N	Success: 200	Shall be returned when information about zero or more alarms has been queried successfully.
ProblemDetails	1	Error: 400	Invalid attribute-based filtering expression. The response body shall contain a ProblemDetails structure, in which the "detail" attribute should convey more information about the error.
ProblemDetails	1	Error: 400	Response too big.
ProblemDetails	See clause 6.4 of¹⁵	Error: 4xx/5xx	In addition to the response codes defined above, any common error response code as defined in clause 6.4 of ETSI GS NFV-SOL 013¹⁶ may be returned.

Attribute name (Alarm)	Data type	Cardinality	Description
id	Identifier	1	Identifier of this Alarm information element.
managedObjectId	Identifier	1	Identifier of the affected VNF instance.
vnfcInstanceIds	IdentifierInVnf	0..N	Identifiers of the affected VNFC instances.
rootCauseFaultyResource	FaultyResourceInfo	0..1	The virtualised resources that are causing the VNF fault. Shall be present if the alarm affects virtualised resources.
>faultyResource	ResourceHandle	1	Information that identifies the faulty resource instance and its managing entity.
>>vimConnectionId	Identifier	0..1	Identifier of the VIM connection to manage the resource. This attribute shall only be supported and present if VNFrelated resource management in direct mode is applicable. The applicable "VimConnectionInfo" structure, which is referenced by vimConnectionId, can be obtained from the "vimConnectionInfo" attribute of the "VnfInstance" structure.
>>resourceProviderId	Identifier	0..1	Identifier of the entity responsible for the management of the resource. This attribute shall only be supported and present when VNF-related resource management in indirect mode is applicable. The identification scheme is outside the scope of the present document.
>>resourceId	IdentifierInVim	1	Identifier of the resource in the scope of the VIM or the resource provider.
>>vimLevelResourceType	String	0..1	Type of the resource in the scope of the VIM or the resource provider. See note.
>faultyResourceType	FaultyResourceType	1	Type of the faulty resource. COMPUTE: Virtual compute resource, STORAGE: Virtual storage resource, NETWORK: Virtual network resource
alarmRaisedTime	DateTime	1	Time stamp indicating when the alarm is raised by the managed object.
alarmChangedTime	DateTime	0..1	Time stamp indicating when the alarm was last changed. It shall be present if the alarm has been updated.
alarmClearedTime	DateTime	0..1	Time stamp indicating when the alarm was cleared. It shall be present if the alarm has been cleared.
alarmAcknowledgedTime	DateTime	0..1	Time stamp indicating when the alarm was acknowledged. It shall be present if the alarm has been acknowledged.
ackState	Enum	1	Acknowledgement state of the alarm. Permitted values: UNACKNOWLEDGED, ACKNOWLEDGED.
perceivedSeverity	PerceivedSeverityType	1	Perceived severity of the managed object failure. CRITICAL,MAJOR,MINOR,WARNING,INDETERMINATE,CLEARED
eventTime	DateTime	1	Time stamp indicating when the fault was observed.
eventType	EventType	1	Type of event.
faultType	String	0..1	Additional information to clarify the type of the fault.
probableCause	String	1	Information about the probable cause of the fault.
isRootCause	Boolean	1	Attribute indicating if this fault is the root for other correlated alarms. If true, then the alarms listed in the attribute "correlatedAlarmIds" are caused by this fault.
correlatedAlarmIds	Identifier	0..N	List of identifiers of other alarms correlated to this fault.
faultDetails	String	0..N	Provides additional information about the fault.
_links	Structure (inlined)	1	Links for this resource.
>self	Link	1	URI of this resource.
>objectInstance	Link	0..1	Link to the resource representing the VNF instance to which the notified alarm is correlated. Shall be present if the VNF instance information is accessible as a resource.

Name: Get the individual alarm
Description: Get the alarm specified in the Tacker.
Method type: GET
URL for the resource: /vnffm/v1/alarms/{alarmId}
Request:

Data type	Cardinality	Description
n/a

Response:

Data type	Cardinality	Response Codes	Description
Alarm	1	Success: 200	Shall be returned when information about an individual alarm has been read successfully.
ProblemDetails	See clause 6.4 of¹⁷	Error: 4xx/5xx	In addition to the response codes defined above, any common error response code as defined in clause 6.4 of ETSI GS NFV-SOL 013¹⁸ may be returned.

Attribute name (Alarm)	Data type	Cardinality	Description
id	Identifier	1	Identifier of this Alarm information element.
managedObjectId	Identifier	1	Identifier of the affected VNF instance.
vnfcInstanceIds	IdentifierInVnf	0..N	Identifiers of the affected VNFC instances.
rootCauseFaultyResource	FaultyResourceInfo	0..1	The virtualised resources that are causing the VNF fault. Shall be present if the alarm affects virtualised resources.
>faultyResource	ResourceHandle	1	Information that identifies the faulty resource instance and its managing entity.
>>vimConnectionId	Identifier	0..1	Identifier of the VIM connection to manage the resource. This attribute shall only be supported and present if VNFrelated resource management in direct mode is applicable. The applicable "VimConnectionInfo" structure, which is referenced by vimConnectionId, can be obtained from the "vimConnectionInfo" attribute of the "VnfInstance" structure.
>>resourceProviderId	Identifier	0..1	Identifier of the entity responsible for the management of the resource. This attribute shall only be supported and present when VNF-related resource management in indirect mode is applicable. The identification scheme is outside the scope of the present document.
>>resourceId	IdentifierInVim	1	Identifier of the resource in the scope of the VIM or the resource provider.
>>vimLevelResourceType	String	0..1	Type of the resource in the scope of the VIM or the resource provider. See note.
>faultyResourceType	FaultyResourceType	1	Type of the faulty resource. COMPUTE, STORAGE, NETWORK
alarmRaisedTime	DateTime	1	Time stamp indicating when the alarm is raised by the managed object.
alarmChangedTime	DateTime	0..1	Time stamp indicating when the alarm was last changed. It shall be present if the alarm has been updated.
alarmClearedTime	DateTime	0..1	Time stamp indicating when the alarm was cleared. It shall be present if the alarm has been cleared.
alarmAcknowledgedTime	DateTime	0..1	Time stamp indicating when the alarm was acknowledged. It shall be present if the alarm has been acknowledged.
ackState	Enum	1	Acknowledgement state of the alarm. Permitted values: UNACKNOWLEDGED, ACKNOWLEDGED.
perceivedSeverity	PerceivedSeverityType	1	Perceived severity of the managed object failure. CRITICAL,MAJOR,MINOR,WARNING,INDETERMINATE,CLEARED
eventTime	DateTime	1	Time stamp indicating when the fault was observed.
eventType	EventType	1	Type of event.
faultType	String	0..1	Additional information to clarify the type of the fault.
probableCause	String	1	Information about the probable cause of the fault.
isRootCause	Boolean	1	Attribute indicating if this fault is the root for other correlated alarms. If true, then the alarms listed in the attribute "correlatedAlarmIds" are caused by this fault.
correlatedAlarmIds	Identifier	0..N	List of identifiers of other alarms correlated to this fault.
faultDetails	String	0..N	Provides additional information about the fault.
_links	Structure (inlined)	1	Links for this resource.
>self	Link	1	URI of this resource.
>objectInstance	Link	0..1	Link to the resource representing the VNF instance to which the notified alarm is correlated. Shall be present if the VNF instance information is accessible as a resource.

Name: Modify the confirmation status
Description: Modify the confirmation status of the alarm specified in the Tacker.
Method type: PATCH
URL for the resource: /vnffm/v1/alarms/{alarmId}
Content-Type: application/mergepatch+json
Request:

Data type	Cardinality	Description
AlarmModifications	1	alarm modification

Attribute name (AlarmModifications)	Data type	Cardinality	Description
ackState	Enum	1	New value of the "ackState" attribute in "Alarm". Permitted values: ACKNOWLEDGED, UNACKNOWLEDGED

Response:

Data type	Cardinality	Response Codes	Description
AlarmModifications	1	Success: 200	Shall be returned when the request has been accepted and completed.
ProblemDetails	1	Error: 409	The operation cannot be executed currently, due to a conflict with the state of the "Individual alarm" resource.
ProblemDetails	See clause 6.4 of¹⁹	Error: 4xx/5xx	In addition to the response codes defined above, any common error response code as defined in clause 6.4 of ETSI GS NFV-SOL 013²⁰ may be returned.

Note

Since current Tacker does not support http Etag, it does not support Error Code: 412 Precondition Failed. According to the ETSI NFV SOL document, there is no API request/response specification for Etag yet, and transactions using Etag are not defined by standardization. Tacker will support Etag after the ETSI NFV specification defines relevant transactions.

Attribute name (AlarmModifications)	Data type	Cardinality	Description
ackState	Enum	1	New value of the "ackState" attribute in "Alarm". Permitted values: ACKNOWLEDGED, UNACKNOWLEDGED

Name: Create a new subscription
Description: Create a new subscription in the Tacker.
Method type: POST
URL for the resource: /vnffm/v1/subscriptions
Request:

Data type	Cardinality	Description
FmSubscriptionRequest	1	Details of the subscription to be created

Attribute name (FmSubscriptionRequest)	Data type	Cardinality	Description
filter	FmNotificationsFilter	0..1	Filter settings for this subscription, to define the subset of all notifications this subscription relates to. A particular notification is sent to the subscriber if the filter matches, or if there is no filter.
>vnfInstanceSubscriptionFilter	VnfInstanceSubscriptionFilter	0..1	Filter criteria to select VNF instances about which to notify.
>>vnfdIds	Identifier	0..N	If present, match VNF instances that were created based on a VNFD identified by one of the vnfdId values listed in this attribute. See note 1.
>>vnfProductsFromProviders	Structure (inlined)	0..N	If present, match VNF instances that belong to VNF products from certain providers. See note 1.
>>>vnfProvider	String	1	Name of the VNF provider to match.
>>>vnfProducts	Structure (inlined)	0..N	If present, match VNF instances that belong to VNF products with certain product names, from one particular provider.
>>>>vnfProductName	String	1	Name of the VNF product to match.
>>>>versions	Structure (inlined)	0..N	If present, match VNF instances that belong to VNF products with certain versions and a certain product name, from one particular provider.
>>>>>vnfSoftwareVersion	Version	1	Software version to match.
>>>>>vnfdVersions	Version	0..N	If present, match VNF instances that belong to VNF products with certain VNFD versions, a certain software version and a certain product name, from one particular provider.
>>vnfInstanceIds	Identifier	0..N	If present, match VNF instances with an instance identifier listed in this attribute.
>>vnfInstanceNames	String	0..N	If present, match VNF instances with a VNF Instance Name listed in this attribute.
>notificationTypes	Enum (inlined)	0..N	Match particular notification types. Permitted values: AlarmNotification, AlarmClearedNotification, AlarmListRebuiltNotification
>faultyResourceTypes	FaultyResourceType	0..N	Match VNF alarms with a faulty resource type. COMPUTE, STORAGE, NETWORK
>perceivedSeverities	PerceivedSeverityType	0..N	Match VNF alarms with a perceived severity. CRITICAL,MAJOR,MINOR,WARNING,INDETERMINATE,CLEARED
>eventTypes	EventType	0..N	Match VNF alarms with an event type. COMMUNICATIONS_ALARM, PROCESSING_ERROR_ALARM, ENVIRONMENTAL_ALARM, QOS_ALARM, EQUIPMENT_ALARM
>probableCauses	String	0..N	Match VNF alarms with a probable cause listed in this attribute.
callbackUri	Uri	1	The URI of the endpoint to send the notification to.
authentication	SubscriptionAuthentication	0..1	Authentication parameters to configure the use of Authorization when sending notifications corresponding to this subscription. See as clause 8.3.4 of ETSI GS NFV-SOL 013²¹

Response:

Data type	Cardinality	Response Codes	Description
FmSubscription	1	Success: 201	Shall be returned when the subscription has been created successfully.
n/a		Success: 303	Shall be returned when a subscription with the same callback URI and the same filter already exists and the policy of the VNFM is to not create redundant subscriptions. The HTTP response shall include a "Location" HTTP header that contains the resource URI of the existing "Individual subscription" resource. The response body shall be empty.
ProblemDetails	1	Error: 422	The content type of the payload body is supported and the payload body of a request contains syntactically correct data but the data cannot be processed.
ProblemDetails	See clause 6.4 of²²	Error: 4xx/5xx	In addition to the response codes defined above, any common error response code as defined in clause 6.4 of ETSI GS NFV-SOL 013²³ may be returned.

Attribute name (FmSubscription)	Data type	Cardinality	Description
id	Identifier	1	Identifier of this "Individual subscription" resource.
filter	FmNotificationsFilter	0..1	Filter settings for this subscription, to define the subset of all notifications this subscription relates to. A particular notification is sent to the subscriber if the filter matches, or if there is no filter.
>vnfInstanceSubscriptionFilter	VnfInstanceSubscriptionFilter	0..1	Filter criteria to select VNF instances about which to notify.
>>vnfdIds	Identifier	0..N	If present, match VNF instances that were created based on a VNFD identified by one of the vnfdId values listed in this attribute. See note 1.
>>vnfProductsFromProviders	Structure (inlined)	0..N	If present, match VNF instances that belong to VNF products from certain providers. See note 1.
>>>vnfProvider	String	1	Name of the VNF provider to match.
>>>vnfProducts	Structure (inlined)	0..N	If present, match VNF instances that belong to VNF products with certain product names, from one particular provider.
>>>>vnfProductName	String	1	Name of the VNF product to match.
>>>>versions	Structure (inlined)	0..N	If present, match VNF instances that belong to VNF products with certain versions and a certain product name, from one particular provider.
>>>>>vnfSoftwareVersion	Version	1	Software version to match.
>>>>>vnfdVersions	Version	0..N	If present, match VNF instances that belong to VNF products with certain VNFD versions, a certain software version and a certain product name, from one particular provider.
>>vnfInstanceIds	Identifier	0..N	If present, match VNF instances with an instance identifier listed in this attribute.
>>vnfInstanceNames	String	0..N	If present, match VNF instances with a VNF Instance Name listed in this attribute.
>notificationTypes	Enum (inlined)	0..N	Match particular notification types. Permitted values: AlarmNotification, AlarmClearedNotification, AlarmListRebuiltNotification
>faultyResourceTypes	FaultyResourceType	0..N	Match VNF alarms with a faulty resource type. COMPUTE, STORAGE, NETWORK
>perceivedSeverities	PerceivedSeverityType	0..N	Match VNF alarms with a perceived severity. CRITICAL,MAJOR,MINOR,WARNING,INDETERMINATE,CLEARED
>eventTypes	EventType	0..N	Match VNF alarms with an event type. COMMUNICATIONS_ALARM, PROCESSING_ERROR_ALARM, ENVIRONMENTAL_ALARM, QOS_ALARM, EQUIPMENT_ALARM
>probableCauses	String	0..N	Match VNF alarms with a probable cause listed in this attribute.
callbackUri	Uri	1	The URI of the endpoint to send the notification to.
_links	Structure (inlined)	1	Links for this resource.
>self	Link	1	URI of this resource.

Name: Get all subscriptions
Description: Allow users to filter out subscriptions based on query parameter in the request
Method type: GET
URL for the resource: /vnffm/v1/subscriptions
Query parameters:

Name Cardinality Description

Name	Cardinality	Description
filter	0..1	Attribute-based filtering expression. The following attribute names shall be supported by the Tacker in the attribute-based filtering expression. All attribute names that appear in the FmSubscription and in data types referenced from it shall be supported by the VNFM in the filter expression. For example, below URI query parameter will matching alarms with perceivedSeverity=WARNING `GET /vnffm/v1/alarms?filter=(eq,filter/perceivedSeverity,WARNING)`

filter

0..1

Attribute-based filtering expression. The following attribute names shall be supported by the Tacker in the attribute-based filtering expression. All attribute names that appear in the FmSubscription and in data types referenced from it shall be supported by the VNFM in the filter expression. For example, below URI query parameter will matching alarms with perceivedSeverity=WARNING

GET /vnffm/v1/alarms?filter=(eq,filter/perceivedSeverity,WARNING)

Request:

Data type	Cardinality	Description
n/a

Response:

Data type	Cardinality	Response Codes	Description
FmSubscription	0..N	Success: 200	Shall be returned when the list of subscriptions has been queried successfully.
ProblemDetails	1	Error: 400	Invalid attribute-based filtering expression. The response body shall contain a ProblemDetails structure, in which the "detail" attribute should convey more information about the error.
ProblemDetails	1	Error: 400	Response too big.
ProblemDetails	See clause 6.4 of²⁴	Error: 4xx/5xx	In addition to the response codes defined above, any common error response code as defined in clause 6.4 of ETSI GS NFV-SOL 013²⁵ may be returned.

Attribute name (FmSubscription)	Data type	Cardinality	Description
id	Identifier	1	Identifier of this "Individual subscription" resource.
filter	FmNotificationsFilter	0..1	Filter settings for this subscription, to define the subset of all notifications this subscription relates to. A particular notification is sent to the subscriber if the filter matches, or if there is no filter.
>vnfInstanceSubscriptionFilter	VnfInstanceSubscriptionFilter	0..1	Filter criteria to select VNF instances about which to notify.
>>vnfdIds	Identifier	0..N	If present, match VNF instances that were created based on a VNFD identified by one of the vnfdId values listed in this attribute. See note 1.
>>vnfProductsFromProviders	Structure (inlined)	0..N	If present, match VNF instances that belong to VNF products from certain providers. See note 1.
>>>vnfProvider	String	1	Name of the VNF provider to match.
>>>vnfProducts	Structure (inlined)	0..N	If present, match VNF instances that belong to VNF products with certain product names, from one particular provider.
>>>>vnfProductName	String	1	Name of the VNF product to match.
>>>>versions	Structure (inlined)	0..N	If present, match VNF instances that belong to VNF products with certain versions and a certain product name, from one particular provider.
>>>>>vnfSoftwareVersion	Version	1	Software version to match.
>>>>>vnfdVersions	Version	0..N	If present, match VNF instances that belong to VNF products with certain VNFD versions, a certain software version and a certain product name, from one particular provider.
>>vnfInstanceIds	Identifier	0..N	If present, match VNF instances with an instance identifier listed in this attribute.
>>vnfInstanceNames	String	0..N	If present, match VNF instances with a VNF Instance Name listed in this attribute.
>notificationTypes	Enum (inlined)	0..N	Match particular notification types. Permitted values: AlarmNotification, AlarmClearedNotification, AlarmListRebuiltNotification
>faultyResourceTypes	FaultyResourceType	0..N	Match VNF alarms with a faulty resource type. COMPUTE, STORAGE, NETWORK
>perceivedSeverities	PerceivedSeverityType	0..N	Match VNF alarms with a perceived severity. CRITICAL,MAJOR,MINOR,WARNING,INDETERMINATE,CLEARED
>eventTypes	EventType	0..N	Match VNF alarms with an event type. COMMUNICATIONS_ALARM, PROCESSING_ERROR_ALARM, ENVIRONMENTAL_ALARM, QOS_ALARM, EQUIPMENT_ALARM
>probableCauses	String	0..N	Match VNF alarms with a probable cause listed in this attribute.
callbackUri	Uri	1	The URI of the endpoint to send the notification to.
_links	Structure (inlined)	1	Links for this resource.
>self	Link	1	URI of this resource.

Name: Get a subscription
Description: Get the subscription in the Tacker
Method type: GET
URL for the resource: /vnffm/v1/subscriptions/{subscriptionId}
Request:

Data type	Cardinality	Description
n/a

Response:

Data type	Cardinality	Response Codes	Description
FmSubscription	1	Success: 200	Shall be returned when information about an individual subscription has been read successfully.
ProblemDetails	See clause 6.4 of²⁶	Error: 4xx/5xx	In addition to the response codes defined above, any common error response code as defined in clause 6.4 of ETSI GS NFV-SOL 013²⁷ may be returned.

Attribute name (FmSubscription)	Data type	Cardinality	Description
id	Identifier	1	Identifier of this "Individual subscription" resource.
filter	FmNotificationsFilter	0..1	Filter settings for this subscription, to define the subset of all notifications this subscription relates to. A particular notification is sent to the subscriber if the filter matches, or if there is no filter.
>vnfInstanceSubscriptionFilter	VnfInstanceSubscriptionFilter	0..1	Filter criteria to select VNF instances about which to notify.
>>vnfdIds	Identifier	0..N	If present, match VNF instances that were created based on a VNFD identified by one of the vnfdId values listed in this attribute. See note 1.
>>vnfProductsFromProviders	Structure (inlined)	0..N	If present, match VNF instances that belong to VNF products from certain providers. See note 1.
>>>vnfProvider	String	1	Name of the VNF provider to match.
>>>vnfProducts	Structure (inlined)	0..N	If present, match VNF instances that belong to VNF products with certain product names, from one particular provider.
>>>>vnfProductName	String	1	Name of the VNF product to match.
>>>>versions	Structure (inlined)	0..N	If present, match VNF instances that belong to VNF products with certain versions and a certain product name, from one particular provider.
>>>>>vnfSoftwareVersion	Version	1	Software version to match.
>>>>>vnfdVersions	Version	0..N	If present, match VNF instances that belong to VNF products with certain VNFD versions, a certain software version and a certain product name, from one particular provider.
>>vnfInstanceIds	Identifier	0..N	If present, match VNF instances with an instance identifier listed in this attribute.
>>vnfInstanceNames	String	0..N	If present, match VNF instances with a VNF Instance Name listed in this attribute.
>notificationTypes	Enum (inlined)	0..N	Match particular notification types. Permitted values: AlarmNotification, AlarmClearedNotification, AlarmListRebuiltNotification
>faultyResourceTypes	FaultyResourceType	0..N	Match VNF alarms with a faulty resource type. COMPUTE, STORAGE, NETWORK
>perceivedSeverities	PerceivedSeverityType	0..N	Match VNF alarms with a perceived severity. CRITICAL,MAJOR,MINOR,WARNING,INDETERMINATE,CLEARED
>eventTypes	EventType	0..N	Match VNF alarms with an event type. COMMUNICATIONS_ALARM, PROCESSING_ERROR_ALARM, ENVIRONMENTAL_ALARM, QOS_ALARM, EQUIPMENT_ALARM
>probableCauses	String	0..N	Match VNF alarms with a probable cause listed in this attribute.
callbackUri	Uri	1	The URI of the endpoint to send the notification to.
_links	Structure (inlined)	1	Links for this resource.
>self	Link	1	URI of this resource.

Name: Delete a subscription
Description: Delete the subscription in the Tacker
Method type: DELETE
URL for the resource: /vnffm/v1/subscriptions/{subscriptionId}
Request:

Data type	Cardinality	Description
n/a

Response:

Data type	Cardinality	Response Codes	Description
n/a		Success: 204	Shall be returned when the "Individual subscription" resource has been deleted successfully.
ProblemDetails	See clause 6.4 of²⁸	Error: 4xx/5xx	In addition to the response codes defined above, any common error response code as defined in clause 6.4 of ETSI GS NFV-SOL 013²⁹ may be returned.

Name: Notifies a VNF alarm
Description: Notify Client that Tacker received an alarm
Method type: POST
URL for the resource: <Client URI from subscriptions>
Request:

Data type	Cardinality	Description
AlarmNotification	1	Information of a VNF alarm
AlarmClearedNotification	1	Information of the clearance of a VNF alarm

Attribute name (AlarmNotification)	Data type	Cardinality	Description
id	Identifier	1	Identifier of this notification. If a notification is sent multiple times due to multiple subscriptions, the "id" attribute of all these notifications shall have the same value.
notificationType	String	1	Discriminator for the different notification types. Shall be set to "AlarmNotification" for this notification type.
subscriptionId	Identifier	1	Identifier of the subscription that this notification relates to.
timeStamp	DateTime	1	Date-time of the generation of the notification.
alarm	Alarm	1	Information about an alarm including AlarmId, affected VNF identifier, and FaultDetails.
>id	Identifier	1	Identifier of this Alarm information element.
>managedObjectId	Identifier	1	Identifier of the affected VNF instance.
>vnfcInstanceIds	IdentifierInVnf	0..N	Identifiers of the affected VNFC instances.
>rootCauseFaultyResource	FaultyResourceInfo	0..1	The virtualised resources that are causing the VNF fault. Shall be present if the alarm affects virtualised resources.
>>faultyResource	ResourceHandle	1	Information that identifies the faulty resource instance and its managing entity.
>>>vimConnectionId	Identifier	0..1	Identifier of the VIM connection to manage the resource. This attribute shall only be supported and present if VNFrelated resource management in direct mode is applicable. The applicable "VimConnectionInfo" structure, which is referenced by vimConnectionId, can be obtained from the "vimConnectionInfo" attribute of the "VnfInstance" structure.
>>>resourceProviderId	Identifier	0..1	Identifier of the entity responsible for the management of the resource. This attribute shall only be supported and present when VNF-related resource management in indirect mode is applicable. The identification scheme is outside the scope of the present document.
>>>resourceId	IdentifierInVim	1	Identifier of the resource in the scope of the VIM or the resource provider.
>>>vimLevelResourceType	String	0..1	Type of the resource in the scope of the VIM or the resource provider. See note.
>>faultyResourceType	FaultyResourceType	1	Type of the faulty resource. COMPUTE, STORAGE, NETWORK
>alarmRaisedTime	DateTime	1	Time stamp indicating when the alarm is raised by the managed object.
>alarmChangedTime	DateTime	0..1	Time stamp indicating when the alarm was last changed. It shall be present if the alarm has been updated.
>alarmClearedTime	DateTime	0..1	Time stamp indicating when the alarm was cleared. It shall be present if the alarm has been cleared.
>alarmAcknowledgedTime	DateTime	0..1	Time stamp indicating when the alarm was acknowledged. It shall be present if the alarm has been acknowledged.
>ackState	Enum	1	Acknowledgement state of the alarm. Permitted values: UNACKNOWLEDGED, ACKNOWLEDGED.
>perceivedSeverity	PerceivedSeverityType	1	Perceived severity of the managed object failure. CRITICAL,MAJOR,MINOR,WARNING,INDETERMINATE,CLEARED
>eventTime	DateTime	1	Time stamp indicating when the fault was observed.
>eventType	EventType	1	Type of event.
>faultType	String	0..1	Additional information to clarify the type of the fault.
>probableCause	String	1	Information about the probable cause of the fault.
>isRootCause	Boolean	1	Attribute indicating if this fault is the root for other correlated alarms. If true, then the alarms listed in the attribute "correlatedAlarmIds" are caused by this fault.
>correlatedAlarmIds	Identifier	0..N	List of identifiers of other alarms correlated to this fault.
>faultDetails	String	0..N	Provides additional information about the fault.
>_links	Structure (inlined)	1	Links for this resource.
>>self	Link	1	URI of this resource.
>>objectInstance	Link	0..1	Link to the resource representing the VNF instance to which the notified alarm is correlated. Shall be present if the VNF instance information is accessible as a resource.
_links	Structure (inlined)	1	Links to resources related to this notification.
>subscription	NotificationLink	1	Link to the related subscription.

Attribute name (AlarmClearedNotification)	Data type	Cardinality	Description
id	Identifier	1	Identifier of this notification. If a notification is sent multiple times due to multiple subscriptions, the "id" attribute of all these notifications shall have the same value.
notificationType	String	1	Discriminator for the different notification types. Shall be set to "AlarmClearedNotification" for this notification type.
subscriptionId	Identifier	1	Identifier of the subscription that this notification relates to.
timeStamp	DateTime	1	Date-time of the generation of the notification.
alarmId	Identifier	1	Alarm identifier.
alarmClearedTime	DateTime	1	The time stamp indicating when the alarm was cleared.
_links	Structure (inlined)	1	Links to resources related to this notification.
>subscription	NotificationLink	1	Link to the related subscription.
>alarm	NotificationLink	1	Link to the resource that represents the related alarm.

Response:

Data type	Cardinality	Response Codes	Description
n/a		Success: 204	Shall be returned when the notification has been delivered successfully.
ProblemDetails	See clause 6.4 of³⁰	Error: 4xx/5xx	In addition to the response codes defined above, any common error response code as defined in clause 6.4 of ETSI GS NFV-SOL 013³¹ may be returned.

Name: Test the notification endpoint
Description: Confirm that the URI of Client is correct.
Method type: GET
URL for the resource: <Client URI from subscriptions>
Request:

Data type	Cardinality	Description
n/a

Response:

Data type	Cardinality	Response Codes	Description
n/a		Success: 204	Shall be returned to indicate that the notification endpoint has been tested successfully.
ProblemDetails	See clause 6.4 of³²	Error: 4xx/5xx	In addition to the response codes defined above, any common error response code as defined in clause 6.4 of ETSI GS NFV-SOL 013³³ may be returned.

Name: Create a PM job
Description: Create a PM job. PM jobs group details of performance collection and reporting information
Method type: POST
URL for the resource: /vnfpm/v2/pm_jobs
Request:

Data type	Cardinality	Description
CreatePmJobRequest	1	PM job creation request

Attribute name (CreatePmJobRequest)	Data type	Cardinality	Description
objectType	String	1	Type of the measured object. The applicable measured object type for a measurement is defined in clause 7.2 of ETSI GS NFV-IFA 027³⁴.
objectInstanceIds	Identifier	1..N	Identifiers of the measured object instances for which performance information is requested to be collected.
subObjectInstanceIds	IdentifierInVnf	0..N	Identifiers of the measured object instances in case of a structured measured object.
criteria	PmJobCriteria	1	Criteria of the collection of performance information.
>performanceMetric	String	0..N	This defines the types of performance metrics for the specified object instances. Valid values are specified as "Measurement Name" values in clause 7.2 of ETSI GS NFV-IFA 027³⁵. At least one of the two attributes (performance metric or group) shall be present.
>performanceMetricGroup	String	0..N	Group of performance metrics. A metric group is a pre-defined list of metrics, known to the API producer that it can decompose to individual metrics. Valid values are specified as "Measurement Group" values in clause 7.2 of ETSI GS NFV-IFA 027³⁶. At least one of the two attributes (performance metric or group) shall be present.
>collectionPeriod	UnsignedInt	1	Specifies the periodicity at which the API producer will collect performance information. The unit shall be seconds.
>reportingPeriod	UnsignedInt	1	Specifies the periodicity at which the API producer will report to the API consumer. about performance information. The unit shall be seconds. The reportingPeriod should be equal to or a multiple of the collectionPeriod.
>reportingBoundary	DateTime	0..1	Identifies a time boundary after which the reporting will stop. The boundary shall allow a single reporting as well as periodic reporting up to the boundary.
callbackUri	Uri	1	The URI of the endpoint to send the notification to.
authentication	SubscriptionAuthentication	0..1	Authentication parameters to configure the use of Authorization when sending notifications corresponding to this subscription. See as clause 8.3.4 of ETSI GS NFV-SOL 013³⁷

Response:

Data type	Cardinality	Response Codes	Description
PmJob	1	Success: 201	Shall be returned when the PM job has been created successfully.
ProblemDetails	1	Error: 422	The content type of the payload body is supported and the payload body of a request contains syntactically correct data but the data cannot be processed.
ProblemDetails	See clause 6.4 of³⁸	Error: 4xx/5xx	In addition to the response codes defined above, any common error response code as defined in clause 6.4 of ETSI GS NFV-SOL 013³⁹ may be returned.

Attribute name (PmJob)	Data type	Cardinality	Description
id	Identifier	1	Identifier of this PM job.
objectType	String	1	Type of the measured object. The applicable measured object type for a measurement is defined in clause 7.2 of ETSI GS NFV-IFA 027⁴⁰.
objectInstanceIds	Identifier	1..N	Identifiers of the measured object instances for which performance information is collected.
subObjectInstanceIds	IdentifierInVnf	0..N	Identifiers of the measured object instances in case of a structured measured object.
criteria	PmJobCriteria	1	Criteria of the collection of performance information.
>performanceMetric	String	0..N	This defines the types of performance metrics for the specified object instances. Valid values are specified as "Measurement Name" values in clause 7.2 of ETSI GS NFV-IFA 027⁴¹. At least one of the two attributes (performance metric or group) shall be present.
>performanceMetricGroup	String	0..N	Group of performance metrics. A metric group is a pre-defined list of metrics, known to the API producer that it can decompose to individual metrics. Valid values are specified as "Measurement Group" values in clause 7.2 of ETSI GS NFV-IFA 027⁴². At least one of the two attributes (performance metric or group) shall be present.
>collectionPeriod	UnsignedInt	1	Specifies the periodicity at which the API producer will collect performance information. The unit shall be seconds.
>reportingPeriod	UnsignedInt	1	Specifies the periodicity at which the API producer will report to the API consumer. about performance information. The unit shall be seconds. The reportingPeriod should be equal to or a multiple of the collectionPeriod.
>reportingBoundary	DateTime	0..1	Identifies a time boundary after which the reporting will stop. The boundary shall allow a single reporting as well as periodic reporting up to the boundary.
callbackUri	Uri	1	The URI of the endpoint to send the notification to.
reports	Structure (inlined)	0..N	Information about available reports collected by this PM job.
>href	Uri	1	The URI where the report can be obtained.
>readyTime	DateTime	1	The time when the report was made available.
>expiryTime	DateTime	0..1	The time when the report will expire.
>fileSize	UnsignedInt	0..1	The size of the report file in bytes, if known.
_links	Structure (inlined)	1	Links for this resource.
>self	Link	1	URI of this resource.
>objects	Link	0..N	Links to resources representing the measured object instances for which performance information is collected. Shall be present if the measured object instance information is accessible as a resource.

Name: Get for PM jobs
Description: Allow users to filter out PM jobs based on query parameter in the request
Method type: GET
URL for the resource: /vnfpm/v2/pm_jobs
Query parameters:

Name	Cardinality	Description
filter	0..1	Attribute-based filtering expression. according to clause 5.2 of ETSI GS NFV-SOL 013⁴³. For example, below URI query parameter will matching PM job with objectType=VNFC. `GET /vnfpm/v2/pm_jobs?filter=(eq,objectType,VNFC)`
all_fields	0..1	Include all complex attributes in the response. See clause 5.3 of ETSI GS NFV-SOL 013⁴⁴ for details.
fields	0..1	Complex attributes to be included into the response. See clause 5.3 of ETSI GS NFV-SOL 013⁴⁵ for details.
exclude_fields	0..1	Complex attributes to be excluded from the response. See clause 5.3 of ETSI GS NFV-SOL 013⁴⁶ for details.
exclude_default	0..1	Indicates to exclude the following complex attributes from the response. See clause 5.3 of ETSI GS NFV-SOL 013⁴⁷ for details.

Request:

Data type	Cardinality	Description
n/a

Response:

Data type	Cardinality	Response Codes	Description
PmJob	0..N	Success: 200	Shall be returned when information about zero or more PM jobs has been queried successfully.
ProblemDetails	1	Error: 400	Invalid attribute-based filtering expression. The response body shall contain a ProblemDetails structure, in which the "detail" attribute should convey more information about the error.
ProblemDetails	1	Error: 400	Invalid attribute selector. The response body shall contain a ProblemDetails structure, in which the "detail" attribute should convey more information about the error.
ProblemDetails	1	Error: 400	Response too big.
ProblemDetails	See clause 6.4 of⁴⁸	Error: 4xx/5xx	In addition to the response codes defined above, any common error response code as defined in clause 6.4 of ETSI GS NFV-SOL 013⁴⁹ may be returned.

Attribute name (PmJob)	Data type	Cardinality	Description
id	Identifier	1	Identifier of this PM job.
objectType	String	1	Type of the measured object. The applicable measured object type for a measurement is defined in clause 7.2 of ETSI GS NFV-IFA 027⁵⁰.
objectInstanceIds	Identifier	1..N	Identifiers of the measured object instances for which performance information is collected.
subObjectInstanceIds	IdentifierInVnf	0..N	Identifiers of the measured object instances in case of a structured measured object.
criteria	PmJobCriteria	1	Criteria of the collection of performance information.
>performanceMetric	String	0..N	This defines the types of performance metrics for the specified object instances. Valid values are specified as "Measurement Name" values in clause 7.2 of ETSI GS NFV-IFA 027⁵¹. At least one of the two attributes (performance metric or group) shall be present.
>performanceMetricGroup	String	0..N	Group of performance metrics. A metric group is a pre-defined list of metrics, known to the API producer that it can decompose to individual metrics. Valid values are specified as "Measurement Group" values in clause 7.2 of ETSI GS NFV-IFA 027⁵². At least one of the two attributes (performance metric or group) shall be present.
>collectionPeriod	UnsignedInt	1	Specifies the periodicity at which the API producer will collect performance information. The unit shall be seconds.
>reportingPeriod	UnsignedInt	1	Specifies the periodicity at which the API producer will report to the API consumer. about performance information. The unit shall be seconds. The reportingPeriod should be equal to or a multiple of the collectionPeriod.
>reportingBoundary	DateTime	0..1	Identifies a time boundary after which the reporting will stop. The boundary shall allow a single reporting as well as periodic reporting up to the boundary.
callbackUri	Uri	1	The URI of the endpoint to send the notification to.
reports	Structure (inlined)	0..N	Information about available reports collected by this PM job.
>href	Uri	1	The URI where the report can be obtained.
>readyTime	DateTime	1	The time when the report was made available.
>expiryTime	DateTime	0..1	The time when the report will expire.
>fileSize	UnsignedInt	0..1	The size of the report file in bytes, if known.
_links	Structure (inlined)	1	Links for this resource.
>self	Link	1	URI of this resource.
>objects	Link	0..N	Links to resources representing the measured object instances for which performance information is collected. Shall be present if the measured object instance information is accessible as a resource.

Name: Get a PM job
Description: Get a individual PM job
Method type: GET
URL for the resource: /vnfpm/v2/pm_jobs/{pmJobId}
Request:

Data type	Cardinality	Description
n/a

Response:

Data type	Cardinality	Response Codes	Description
PmJob	1	Success: 200	Shall be returned when information about an individual PM job has been read successfully.
ProblemDetails	See clause 6.4 of⁵³	Error: 4xx/5xx	In addition to the response codes defined above, any common error response code as defined in clause 6.4 of ETSI GS NFV-SOL 013⁵⁴ may be returned.

Attribute name (PmJob)	Data type	Cardinality	Description
id	Identifier	1	Identifier of this PM job.
objectType	String	1	Type of the measured object. The applicable measured object type for a measurement is defined in clause 7.2 of ETSI GS NFV-IFA 027⁵⁵.
objectInstanceIds	Identifier	1..N	Identifiers of the measured object instances for which performance information is collected.
subObjectInstanceIds	IdentifierInVnf	0..N	Identifiers of the measured object instances in case of a structured measured object.
criteria	PmJobCriteria	1	Criteria of the collection of performance information.
>performanceMetric	String	0..N	This defines the types of performance metrics for the specified object instances. Valid values are specified as "Measurement Name" values in clause 7.2 of ETSI GS NFV-IFA 027⁵⁶. At least one of the two attributes (performance metric or group) shall be present.
>performanceMetricGroup	String	0..N	Group of performance metrics. A metric group is a pre-defined list of metrics, known to the API producer that it can decompose to individual metrics. Valid values are specified as "Measurement Group" values in clause 7.2 of ETSI GS NFV-IFA 027⁵⁷. At least one of the two attributes (performance metric or group) shall be present.
>collectionPeriod	UnsignedInt	1	Specifies the periodicity at which the API producer will collect performance information. The unit shall be seconds.
>reportingPeriod	UnsignedInt	1	Specifies the periodicity at which the API producer will report to the API consumer. about performance information. The unit shall be seconds. The reportingPeriod should be equal to or a multiple of the collectionPeriod.
>reportingBoundary	DateTime	0..1	Identifies a time boundary after which the reporting will stop. The boundary shall allow a single reporting as well as periodic reporting up to the boundary.
callbackUri	Uri	1	The URI of the endpoint to send the notification to.
reports	Structure (inlined)	0..N	Information about available reports collected by this PM job.
>href	Uri	1	The URI where the report can be obtained.
>readyTime	DateTime	1	The time when the report was made available.
>expiryTime	DateTime	0..1	The time when the report will expire.
>fileSize	UnsignedInt	0..1	The size of the report file in bytes, if known.
_links	Structure (inlined)	1	Links for this resource.
>self	Link	1	URI of this resource.
>objects	Link	0..N	Links to resources representing the measured object instances for which performance information is collected. Shall be present if the measured object instance information is accessible as a resource.

Name: Modify a PM job
Description: Modify resource of an individual PM job
Method type: PATCH
URL for the resource: /vnfpm/v2/pm_jobs/{pmJobId}
Content-Type: application/mergepatch+json
Request:

Data type	Cardinality	Description
PmJobModifications	1	Parameters for the PM job modification.

Attribute name (PmJobModifications)	Data type	Cardinality	Description
callbackUri	Uri	0..1	New value of the "callbackUri" attribute. The value "null" is not permitted.
authentication	SubscriptionAuthentication	0..1	New value of the "authentication" attribute, or "null" to remove the attribute. If present in a request body, these modifications shall be applied according to the rules of JSON Merge Patch.

Response:

Data type	Cardinality	Response Codes	Description
PmJobModifications	1	Success: 200	Shall be returned when the request has been processed successfully.
ProblemDetails	1	422	The content type of the payload body is supported and the payload body of a request contains syntactically correct data but the data cannot be processed.
ProblemDetails	See clause 6.4 of⁵⁸	Error: 4xx/5xx	In addition to the response codes defined above, any common error response code as defined in clause 6.4 of ETSI GS NFV-SOL 013⁵⁹ may be returned.

Note

Attribute name (PmJobModifications)	Data type	Cardinality	Description
callbackUri	Uri	0..1	New value of the "callbackUri" attribute. The value "null" is not permitted.

The authentication parameter shall not be present in response bodies.

Name: Delete a PM job
Description: Delete the PM job in the Tacker
Method type: DELETE
URL for the resource: /vnfpm/v2/pm_jobs/{pmJobId}
Request:

Data type	Cardinality	Description
n/a

Response:

Data type	Cardinality	Response Codes	Description
n/a		Success: 204	Shall be returned when the PM job has been deleted successfully.
ProblemDetails	See clause 6.4 of⁶⁰	Error: 4xx/5xx	In addition to the response codes defined above, any common error response code as defined in clause 6.4 of ETSI GS NFV-SOL 013⁶¹ may be returned.

Name: Get individual performance report
Description: Get an individual performance report
Method type: GET
URL for the resource: /vnfpm/v2/pm_jobs/{pmJobId}/reports/{reportId}
Request:

Data type	Cardinality	Description
n/a

Response:

Data type	Cardinality	Response Codes	Description
PerformanceReport	1	Success: 200	Shall be returned when information of an individual performance report has been read successfully.
ProblemDetails	See clause 6.4 of⁶²	Error: 4xx/5xx	In addition to the response codes defined above, any common error response code as defined in clause 6.4 of ETSI GS NFV-SOL 013⁶³ may be returned.

Attribute name (PerformanceReport)	Data type	Cardinality	Description
entries	Structure (inlined)	1..N	List of performance information entries.
>objectType	String	1	Type of the measured object. The applicable measured object type for a measurement is defined in clause 7.2 of ETSI GS NFV-IFA 027⁶⁴.
>objectInstanceId	Identifier	1	Identifier of the measured object instance for which the performance metric is reported.
>subObjectInstanceId	IdentifierInVnf	0..1	Identifier of the sub-object instance of the measured object instance for which the performance metric is reported. Shall be present if this is required in clause 6.2 of ETSI GS NFV-IFA 027⁶⁵ for the related measured object type.
>performanceMetric	String	1	Name of the metric collected. This attribute shall contain the related "Measurement Name" value as defined in clause 7.2 of ETSI GS NFV-IFA 027⁶⁶.
>performanceValues	Structure (inlined)	1..N	List of performance values with associated timestamp.
>>timeStamp	DateTime	1	Time stamp indicating when the data has been collected.
>>value	(any type)	1	Value of the metric collected. The type of this attribute shall correspond to the related "Measurement Unit" as defined in clause 7.2 of ETSI GS NFV-IFA 027⁶⁷.
>>context	KeyValuePairs	0..1	Measurement context information related to the measured value. The set of applicable keys is defined per measurement in the related "Measurement Context" in clause 7.2 of ETSI GS NFV-IFA 027⁶⁸.

Name: Notifies a VNF Performance Management event
Description: Delivers a notification regarding a Performance Management event
Method type: POST
URL for the resource: <Client URI for notifications>
Request:

Data type	Cardinality	Description
PerformanceInformationAvailableNotification	1	Notification about performance information availability

Attribute name (PerformanceInformationAvailableNotification)	Data type	Cardinality	Description
id	Identifier	1	Identifier of this notification. If a notification is sent multiple times due to multiple subscriptions, the "id" attribute of all these notifications shall have the same value.
notificationType	String	1	Discriminator for the different notification types. Shall be set to "PerformanceInformationAvailableNotification" for this notification type.
timeStamp	DateTime	1	Date and time of the generation of the notification.
pmJobId	Identifier	1	Identifier of the PM job for which performance information is available.
objectType	String	1	Type of the measured object. The applicable measured object type for a measurement is defined in clause 7.2 of ETSI GS NFV-IFA 027⁶⁹.
objectInstanceId	Identifier	1	Identifier of the measured object instance as per clause 6.2 of ETSI GS NFV-IFA 027⁷⁰.
subObjectInstanceIds	IdentifierInVnf	0..N	Identifiers of the sub-object instances of the measured object instance for which the measurements have been taken. Shall be present if the related PM job has been set up to measure only a subset of all sub-object instances of the measured object instance and a sub-object is defined in clause 6.2 of ETSI GS NFV-IFA 027⁷¹ for the related measured object type. Shall be absent otherwise.
_links	Structure (inlined)	1	Links to resources related to this notification.
>objectInstance	NotificationLink	0..1	Link to the resource representing the measured object instance to which the notification applies. Shall be present if the measured object instance information is accessible as a resource.
>pmJob	NotificationLink	1	Link to the resource that represents the PM job for which performance information is available.
>performanceReport	NotificationLink	1	Link from which the available performance information of data type "PerformanceReport" can be obtained. This link should point to an "Individual performance report" resource.

Response:

Data type	Cardinality	Response Codes	Description
n/a		Success: 204	Shall be returned when the notification has been delivered successfully.
ProblemDetails	See clause 6.4 of⁷²	Error: 4xx/5xx	In addition to the response codes defined above, any common error response code as defined in clause 6.4 of ETSI GS NFV-SOL 013⁷³ may be returned.

Name: Test the notification endpoint
Description: Confirm that the URI of Client is correct.
Method type: GET
URL for the resource: <Client URI for notifications>
Request:

Data type	Cardinality	Description
n/a

Response:

Data type	Cardinality	Response Codes	Description
n/a		Success: 204	Shall be returned to indicate that the notification endpoint has been tested successfully.
ProblemDetails	See clause 6.4 of⁷⁴	Error: 4xx/5xx	In addition to the response codes defined above, any common error response code as defined in clause 6.4 of ETSI GS NFV-SOL 013⁷⁵ may be returned.

The following RESTful API is Tacker specific interface used for Fault Management between Tacker and External Monitoring Tool.

Name: Send a alert event
Description: Receive the alert sent from External Monitoring Tool
Method type: POST
URL for the resource: /alert
Request:

Data type	Cardinality	Description
AlertEvent	1	the alert sent from External Monitoring Tool

Attribute name (AlertEvent)	Data type	Cardinality	Description
receiver	String	1	Defines the receiver's name that the notification will be sent to.
status	String	1	Defined as firing if at least one alert is firing, otherwise resolved.
alerts	Structure(inlined)	1..N	List of all alert objects in this group.
>status	String	1	Defines whether or not the alert is resolved or currently firing.
>labels	Structure(inlined)	1	A set of labels to be attached to the alert.
>>receiver_type	String	1	Type of receiver: tacker
>>function_type	String	1	Type of function: vnffm
>>vnf_instance_id	Identifier	1	Identifier of vnf instance.
>>node	String	0..1	Name of node.
>>perceived_severity	String	1	Perceived severity of the managed object failure. CRITICAL,MAJOR,MINOR,WARNING,INDETERMINATE,CLEARED
>>event_type	String	1	Event type. COMMUNICATIONS_ALARM, PROCESSING_ERROR_ALARM, ENVIRONMENTAL_ALARM, QOS_ALARM, EQUIPMENT_ALARM
>annotations	Structure(inlined)	1	A set of annotations for the alert.
>>fault_type	String	0..1	Additional information to clarify the type of the fault.
>>probable_cause	String	1	Information about the probable cause of the fault.
>>fault_details	String	0..1	Provides additional information about the fault.
>startsAt	DateTime	1	The time the alert started firing.
>endsAt	DateTime	1	The end time of an alert.
>generatorURL	String	1	A backlink which identifies the causing entity of this alert.
>fingerprint	String	1	Fingerprint that can be used to identify the alert.
groupLabels	KeyValuePairs	1	The labels these alerts were grouped by.
commonLabels	KeyValuePairs	1	The labels common to all of the alerts.
commonAnnotations	KeyValuePairs	1	Set of common annotations to all of the alerts. Used for longer additional strings of information about the alert.
externalURL	String	1	Backlink to the Alertmanager that sent the notification.
version	String	1
groupKey	String	1

Response:

Data type	Cardinality	Response Codes	Description
n/a		Success: 204	Shall be returned when a request has been read successfully.
ProblemDetails	See clause 6.4 of⁷⁶	Error: 4xx/5xx	In addition to the response codes defined above, any common error response code as defined in clause 6.4 of ETSI GS NFV-SOL 013⁷⁷ may be returned.

The following RESTful APIs are Tacker specific interfaces used for Performance Management between Tacker and External Monitoring Tool.

Name: Send a PM event
Description: Receive the PM event sent from External Monitoring Tool
Method type: POST
URL for the resource: /pm_event
Request:

Data type	Cardinality	Description
PerformanceEvent	1	The PM event sent from External Monitoring Tool

Attribute name (PerformanceEvent)	Data type	Cardinality	Description
receiver	String	1	Defines the receiver's name that the notification will be sent to.
status	String	1	Defined as firing if at least one alert is firing, otherwise resolved. This attribute is not referred by Tacker in case of PM.
alerts	Structure(inlined)	1..N	List of all alert objects in this group.
>status	String	1	Defines whether or not the alert is resolved or currently firing.
>labels	Structure(inlined)	1	A set of labels to be attached to the alert.
>>receiver_type	String	1	Type of receiver: tacker
>>function_type	String	1	Type of function: vnfpm
>>job_id	Identifier	1	Identifier of the PM job
>>object_instance_id	Identifier	1	Identifier of the measured object instance for which the performance metric is reported.
>>sub_object_instance_id	Identifier	0..1	Identifier of the measured object sub instance for which the performance metric is reported.
>annotations	Structure(inlined)	1	A set of annotations for the alert.
>>value	(any type)	0..1	Value of the metric collected.
>startsAt	DateTime	1	The time the alert started firing.
>endsAt	DateTime	1	The end time of an alert.
>generatorURL	String	1	A backlink which identifies the causing entity of this alert.
>fingerprint	String	1	Fingerprint that can be used to identify the alert.
groupLabels	KeyValuePairs	1	The labels these alerts were grouped by.
commonLabels	KeyValuePairs	1	The labels common to all of the alerts.
commonAnnotations	KeyValuePairs	1	Set of common annotations to all of the alerts. Used for longer additional strings of information about the alert.
externalURL	String	1	Backlink to the Alertmanager that sent the notification.
version	String	1
groupKey	String	1

Response:

Data type	Cardinality	Response Codes	Description
n/a		Success: 204	Shall be returned when a request has been read successfully.
ProblemDetails	See clause 6.4 of⁷⁸	Error: 4xx/5xx	In addition to the response codes defined above, any common error response code as defined in clause 6.4 of ETSI GS NFV-SOL 013⁷⁹ may be returned.

Security impact

None

Notifications impact

Fault Management:

Tacker sends POST <Client URI from subscriptions> to NFVO or EM to notify Client that Tacker received an alarm.
Tacker sends GET <Client URI from subscriptions> to NFVO or EM to confirm that the URI of Client is correct.

Performance Management:

Tacker sends POST <Client URI for notifications> to NFVO or EM to notify Client that Tacker received a PM related event.
Tacker sends GET <Client URI for notifications> to NFVO or EM to confirm that the URI of Client is correct.
Tacker sends GET/POST /api/v1/alerts to External Monitoring Tool to set PM jobs.
Tacker sends GET/POST /api/v1/query to External Monitoring Tool to get data related to a PM event.

Other end user impact

None

Performance Impact

None

Other deployer impact

None

Developer impact

None

Implementation

Assignee(s)

Primary assignee:

Masaki Ueno <masaki.ueno.up@hco.ntt.co.jp>

Other contributors:

Koji Shimizu <shimizu.koji@fujitsu.com>

Yoshiyuki Katada <katada.yoshiyuk@fujitsu.com>

Ayumu Ueha <ueha.ayumu@fujitsu.com>

Yusuke Niimi <niimi.yusuke@fujitsu.com>

Work Items

Implement Tacker to support:
- Fault Management interface
  - Add new Rest API GET /vnffm/v1/alarms to get all alarms.
  - Add new Rest API GET /vnffm/v1/alarms/{alarmId} to get the specified alarm.
  - Add new Rest API PATCH /vnffm/v1/alarms/{alarmId} to change target Alarm to confirmed.
  - Add new Rest API POST /vnffm/v1/subscriptions to create a new subscription.
  - Add new Rest API GET /vnffm/v1/subscriptions to get all subscription.
  - Add new Rest API GET /vnffm/v1/subscriptions/{subscriptionId} to get the specified subscription.
  - Add new Rest API DELETE /vnffm/v1/subscriptions/{subscriptionId} to delete the specified subscription.
  - Add new Request POST <Client URI from subscriptions> to notify Client that Tacker received an alarm.
  - Add new Request GET <Client URI from subscriptions> to confirm that the URI of Client is correct.
- Performance Management interface
  - Add new Rest API POST /vnfpm/v2/pm_jobs to create a PM job.
  - Add new Rest API GET /vnfpm/v2/pm_jobs to get all PM jobs.
  - Add new Rest API GET /vnfpm/v2/pm_jobs/{pmJobId} to get the specified PM job.
  - Add new Rest API PATCH /vnfpm/v2/pm_jobs/{pmJobId} to change target PM job.
  - Add new Rest API DELETE /vnfpm/v2/pm_jobs/{pmJobId} to delete the specified PM job.
  - Add new Rest API GET /vnfpm/v2/pm_jobs/{pmJobId}/reports/{reportId} to get the specified PM report.
  - Add new request POST <Client URI for notifications> to notify Client that Tacker received an alarm.
  - Add new request GET <Client URI for notifications> to confirm that the URI of Client is correct.
- External Monitoring interface
  - Add new Rest API POST /alert to receive the FM alert sent from External Monitoring Tool.
  - Add new Rest API POST /pm_event to receive the PM event sent from External Monitoring Tool.
Add new unit and functional tests.

Dependencies

None.

Testing

Unit and functional tests will be added to cover cases required in the spec.

Documentation Impact

Complete user guide will be added to explain how to monitor by External Monitoring Tool.
Update API documentation on the API additions mentioned in REST API impact.

122 KiB Raw Blame History

Support AutoHeal and AutoScale with External Monitoring Tools via FM/PM Interfaces

Problem description

Proposed change

Prometheus Plugin

AutoHeal on FM alert trigger

Design of heal operation in FM Polling Mode

Request parameters for operation in FM Polling Mode

Sequence for operation in FM Polling Mode

Design of heal operation in FM Notification Mode

Request parameters for operation in FM Notification Mode

Sequence for operation in FM Notification Mode

AutoScale on PM event trigger

Design of scale operation in PM

Request parameters for operation in PM

Sequence for operation in PM

Alternatives

Data model impact

REST API impact

Security impact

Notifications impact

Other end user impact

Performance Impact

Other deployer impact

Developer impact

Implementation

Assignee(s)

Work Items

Dependencies

Testing

Documentation Impact

References

122 KiB

Raw Blame History