Use Docker healthchecks for magnum services

This change enables the use of Docker healthchecks for magnum
services.
Implements: blueprint container-health-check

Change-Id: I14d862aa599915c781d02b71a0e57d2124de9abc

ansible/roles/magnum/defaults/main.yml

@@ -11,6 +11,7 @@ magnum_services:
       DUMMY_ENVIRONMENT: kolla_useless_env
     volumes: "{{ magnum_api_default_volumes + magnum_api_extra_volumes }}"
     dimensions: "{{ magnum_api_dimensions }}"
+    healthcheck: "{{ magnum_api_healthcheck }}"
     haproxy:
       magnum_api:
         enabled: "{{ enable_magnum }}"
@@ -30,6 +31,7 @@ magnum_services:
     environment: "{{ magnum_conductor_container_proxy }}"
     volumes: "{{ magnum_conductor_default_volumes + magnum_conductor_extra_volumes }}"
     dimensions: "{{ magnum_conductor_dimensions }}"
+    healthcheck: "{{ magnum_conductor_healthcheck }}"
 
 
 ####################
@@ -66,6 +68,32 @@ magnum_conductor_image_full: "{{ magnum_conductor_image }}:{{ magnum_conductor_t
 magnum_api_dimensions: "{{ default_container_dimensions }}"
 magnum_conductor_dimensions: "{{ default_container_dimensions }}"
 
+magnum_api_enable_healthchecks: "{{ enable_container_healthchecks }}"
+magnum_api_healthcheck_interval: "{{ default_container_healthcheck_interval }}"
+magnum_api_healthcheck_retries: "{{ default_container_healthcheck_retries }}"
+magnum_api_healthcheck_start_period: "{{ default_container_healthcheck_start_period }}"
+magnum_api_healthcheck_test: ["CMD-SHELL", "healthcheck_curl http://{{ api_interface_address |  put_address_in_context('url') }}:{{ magnum_api_port }}"]
+magnum_api_healthcheck_timeout: "{{ default_container_healthcheck_timeout }}"
+magnum_api_healthcheck:
+  interval: "{{ magnum_api_healthcheck_interval }}"
+  retries: "{{ magnum_api_healthcheck_retries }}"
+  start_period: "{{ magnum_api_healthcheck_start_period }}"
+  test: "{% if magnum_api_enable_healthchecks | bool %}{{ magnum_api_healthcheck_test }}{% else %}NONE{% endif %}"
+  timeout: "{{ magnum_api_healthcheck_timeout }}"
+
+magnum_conductor_enable_healthchecks: "{{ enable_container_healthchecks }}"
+magnum_conductor_healthcheck_interval: "{{ default_container_healthcheck_interval }}"
+magnum_conductor_healthcheck_retries: "{{ default_container_healthcheck_retries }}"
+magnum_conductor_healthcheck_start_period: "{{ default_container_healthcheck_start_period }}"
+magnum_conductor_healthcheck_test: ["CMD-SHELL", "healthcheck_port magnum-conductor {{ om_rpc_port }}"]
+magnum_conductor_healthcheck_timeout: "{{ default_container_healthcheck_timeout }}"
+magnum_conductor_healthcheck:
+  interval: "{{ magnum_conductor_healthcheck_interval }}"
+  retries: "{{ magnum_conductor_healthcheck_retries }}"
+  start_period: "{{ magnum_conductor_healthcheck_start_period }}"
+  test: "{% if magnum_conductor_enable_healthchecks | bool %}{{ magnum_conductor_healthcheck_test }}{% else %}NONE{% endif %}"
+  timeout: "{{ magnum_conductor_healthcheck_timeout }}"
+
 magnum_api_default_volumes:
   - "{{ node_config_directory }}/magnum-api/:{{ container_config_directory }}/:ro"
   - "/etc/localtime:/etc/localtime:ro"

ansible/roles/magnum/handlers/main.yml

@@ -12,6 +12,7 @@
     volumes: "{{ service.volumes|reject('equalto', '')|list }}"
     environment: "{{ service.environment }}"
     dimensions: "{{ service.dimensions }}"
+    healthcheck: "{{ service.healthcheck | default(omit) }}"
   when:
     - kolla_action != "config"
 
@@ -28,5 +29,6 @@
     volumes: "{{ service.volumes|reject('equalto', '')|list }}"
     environment: "{{ service.environment }}"
     dimensions: "{{ service.dimensions }}"
+    healthcheck: "{{ service.healthcheck | default(omit) }}"
   when:
     - kolla_action != "config"

ansible/roles/magnum/tasks/check-containers.yml

@@ -8,6 +8,7 @@
     image: "{{ item.value.image }}"
     volumes: "{{ item.value.volumes|reject('equalto', '')|list }}"
     dimensions: "{{ item.value.dimensions }}"
+    healthcheck: "{{ item.value.healthcheck | default(omit) }}"
     environment: "{{ item.value.environment }}"
   when:
     - inventory_hostname in groups[item.value.group]

releasenotes/notes/implement-docker-healthchecks-for-magnum-0e92b0645fcdeb61.yaml

@@ -0,0 +1,6 @@
+---
+features:
+  - |
+    Implements container healthchecks for magnum services.
+    See `blueprint
+    <https://blueprints.launchpad.net/kolla-ansible/+spec/container-health-check>`__