Add missing *Workers into low-memory footprint env

Similarly to other services, allow configuring custom service
workers counts for Octavia API and Horizon. Also, add the
corresponding low memory env configuration for those.

Set missing *Workers conunts to 1 as well.

Change-Id: Id9119ab6cfb8b2c85a097068777b4f96a34f5d3f
Signed-off-by: Bogdan Dobrelya <bdobreli@redhat.com>

deployment/horizon/horizon-container-puppet.yaml

@@ -137,6 +137,10 @@ parameters:
     default:
       tag: openstack.horizon
       file: /var/log/containers/horizon/horizon.log
+  HorizonWorkers:
+    default: 0
+    description: Number of workers for Horizon service.
+    type: number
 
 parameter_groups:
 - label: deprecated
@@ -158,6 +162,8 @@ conditions:
     or:
       - {get_param: Debug}
       - {get_param: HorizonDebug}
+  horizon_workers_set:
+    not: {equals : [{get_param: HorizonWorkers}, 0]}
 
 resources:
 
@@ -233,6 +239,9 @@ outputs:
         - if:
           - horizon_domain_choices_set
           - horizon::keystone_domain_choices: {get_param: HorizonDomainChoices}
+        - if:
+          - horizon_workers_set
+          - horizon::wsgi_processes: {get_param: HorizonWorkers}
       ansible_group_vars:
         keystone_enable_member: true
       service_config_settings:

deployment/octavia/octavia-api-container-puppet.yaml

@@ -92,6 +92,14 @@ parameters:
     description: |
       Use the advanced (eventlet safe) memcached client pool.
     default: true
+  OctaviaWorkers:
+    default: 0
+    description: Number of workers for Octavia service.
+    type: number
+
+conditions:
+  octavia_workers_set:
+    not: {equals : [{get_param: OctaviaWorkers}, 0]}
 
 resources:
   ContainersCommon:
@@ -208,6 +216,9 @@ outputs:
                   - if:
                       - {get_param: OctaviaEnableDriverAgent}
                       - {get_attr: [OctaviaProviderConfig, role_data, provider_driver_labels]}
+          - if:
+              - octavia_workers_set
+              - octavia::wsgi::apache::workers: {get_param: OctaviaWorkers}
       service_config_settings:
         rsyslog:
           tripleo_logging_sources_octavia_api:

environments/low-memory-usage.yaml

@@ -1,16 +1,23 @@
 # Lower the memory usage of overcloud.
 parameter_defaults:
+  BarbicanWorkers: 1
   CinderWorkers: 1
+  DesignateWorkers: 1
   GlanceWorkers: 1
-  HeatWorkers: 1
-  KeystoneWorkers: 1
-  NeutronWorkers: 1
-  NeutronMetadataWorkers: 1
-  NovaWorkers: 1
-  NovaSchedulerWorkers: 1
-  SwiftWorkers: 1
-  PlacementWorkers: 1
   GnocchiMetricdWorkers: 1
+  HeatWorkers: 1
+  HorizonWorkers: 1
+  KeystoneWorkers: 1
+  ManilaWorkers: 1
+  MistralWorkers: 1
+  NeutronMetadataWorkers: 1
+  NeutronWorkers: 1
+  NovaSchedulerWorkers: 1
+  NovaWorkers: 1
+  PlacementWorkers: 1
+  SwiftWorkers: 1
+  ZaqarWorkers: 1
+  OctaviaWorkers: 1
 
   ApacheMaxRequestWorkers: 100
   ApacheServerLimit: 100

releasenotes/notes/octavia_service_workers-70887b5882ce0bb0.yaml

@@ -0,0 +1,9 @@
+---
+features:
+  - |
+    `OctaviaWorkers` and `HorizonWorkers` allow to configure the process
+    workers count for the Octavia API and Horizon WSGI applications.
+fixes:
+  - |
+    Add the missing `*Workers` parameters into the low-memory footprint
+    environment and set it to 1.