5d40367bef
Changed files: - index.rst - contributor/index.rst - installation-and-configuration - split to devstack-installation.rst and configuration.rst Change-Id: I4683a213e2a530d2088c4f232b9c2508fc25ba68
97 lines
2.9 KiB
ReStructuredText
97 lines
2.9 KiB
ReStructuredText
=================
|
|
Vitrage Use Cases
|
|
=================
|
|
|
|
Add Nova Instance
|
|
-----------------
|
|
.. image:: ./images/add_nova_instance_flow.png
|
|
:width: 100%
|
|
:align: center
|
|
|
|
|
|
#. Nova datasource Driver queries all Nova instances, or gets a message bus
|
|
notification about a new Nova instance
|
|
#. Nova datasource Driver sends corresponding events to the Entity Queue
|
|
#. The Entity Processor polls the Entity Queue and gets the new Nova Instance
|
|
event
|
|
#. The Entity Processor passes the event to the Nova Instance Transformer,
|
|
which returns a Vertex with the instance data, with an edge to the host
|
|
Vertex in the graph
|
|
#. The Entity Processor adds the new vertex and edge to the Graph
|
|
|
|
.. image:: ./images/add_nova_instance_graph.png
|
|
:width: 100%
|
|
:align: center
|
|
|
|
|
|
Add Aodh Alarm
|
|
--------------
|
|
.. image:: ./images/add_aodh_alarm_flow.png
|
|
:width: 100%
|
|
:align: center
|
|
|
|
|
|
#. Aodh Driver queries all Aodh alarms
|
|
#. Aodh Driver sends corresponding events to the Entity Queue
|
|
#. The Entity Processor polls the Entity Queue and gets the Aodh Alarm event,
|
|
for example threshold alarm on Instance-1 CPU
|
|
#. The Entity Processor passes the event to the Aodh Alarm Transformer, which
|
|
returns a Vertex with the alarm data, with an edge to the instance Vertex
|
|
#. The Entity Processor adds the new vertex and edge to the Graph
|
|
|
|
.. image:: ./images/add_aodh_alarm_graph.png
|
|
:width: 100%
|
|
:align: center
|
|
|
|
|
|
Nagios Alarm Causes Deduced Alarm
|
|
---------------------------------
|
|
.. image:: ./images/nagios_causes_deduced_flow.png
|
|
:width: 100%
|
|
:align: center
|
|
|
|
|
|
5. (steps 1-4) Nagios datasource driver pushes a nagios alarm on a switch to
|
|
the Entity Queue, which is converted by Nagios Transformer to a vertex and
|
|
inserted to the Graph
|
|
6. The Evaluator is notified about a new Vertex (Nagios switch alarm) that was
|
|
added to the graph
|
|
7. The Evaluator performs its calculations and deduces that alarms should be
|
|
triggered on every instance on every host attached to this switch
|
|
8. The Evaluator pushes alarms to the Entity Queue
|
|
9. The graph is updated with these new alarms
|
|
10. The graph writes to the message bus that new alarms were created
|
|
11. Aodh Notifier creates new alarm definitions in Aodh, and sets their states
|
|
to "alarm"
|
|
|
|
.. image:: ./images/nagios_causes_deduced_graph.png
|
|
:width: 100%
|
|
:align: center
|
|
|
|
|
|
Create RCA Insights
|
|
-------------------
|
|
.. image:: ./images/rca_flow.png
|
|
:width: 100%
|
|
:align: center
|
|
|
|
|
|
#. The Evaluator is notified of a new alarm *Alarm-X*.
|
|
#. The Evaluator evaluates the templates and the Graph, and decides that there
|
|
is a root cause relation between *Alarm-X* and *Alarm-Y*. It adds a "causes"
|
|
edge to the Graph
|
|
|
|
.. image:: ./images/rca_graph.png
|
|
:width: 100%
|
|
:align: center
|
|
|
|
|
|
Note that in future versions the graph with RCA information may become more
|
|
complex, for example:
|
|
|
|
.. image:: ./images/complex_rca_graph.png
|
|
:width: 100%
|
|
:align: center
|
|
|
|
|