Use Docker healthchecks for tacker services

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

Change-Id: Ib33863e4bf78f73a28d82b222ab349909ebb6671

ansible/roles/tacker/defaults/main.yml

@@ -10,6 +10,7 @@ tacker_services:
     image: "{{ tacker_server_image_full }}"
     volumes: "{{ tacker_server_default_volumes + tacker_server_extra_volumes }}"
     dimensions: "{{ tacker_server_dimensions }}"
+    healthcheck: "{{ tacker_server_healthcheck }}"
     haproxy:
       tacker_server:
         enabled: "{{ enable_tacker }}"
@@ -31,6 +32,7 @@ tacker_services:
     image: "{{ tacker_conductor_image_full }}"
     volumes: "{{ tacker_conductor_default_volumes + tacker_conductor_extra_volumes }}"
     dimensions: "{{ tacker_conductor_dimensions }}"
+    healthcheck: "{{ tacker_conductor_healthcheck }}"
 
 ####################
 # Database
@@ -56,6 +58,32 @@ tacker_conductor_image_full: "{{ tacker_conductor_image }}:{{ tacker_conductor_t
 tacker_server_dimensions: "{{ default_container_dimensions }}"
 tacker_conductor_dimensions: "{{ default_container_dimensions }}"
 
+tacker_server_enable_healthchecks: "{{ enable_container_healthchecks }}"
+tacker_server_healthcheck_interval: "{{ default_container_healthcheck_interval }}"
+tacker_server_healthcheck_retries: "{{ default_container_healthcheck_retries }}"
+tacker_server_healthcheck_start_period: "{{ default_container_healthcheck_start_period }}"
+tacker_server_healthcheck_test: ["CMD-SHELL", "healthcheck_curl http://{{ api_interface_address |  put_address_in_context('url') }}:{{ tacker_server_port }}"]
+tacker_server_healthcheck_timeout: "{{ default_container_healthcheck_timeout }}"
+tacker_server_healthcheck:
+  interval: "{{ tacker_server_healthcheck_interval }}"
+  retries: "{{ tacker_server_healthcheck_retries }}"
+  start_period: "{{ tacker_server_healthcheck_start_period }}"
+  test: "{% if tacker_server_enable_healthchecks | bool %}{{ tacker_server_healthcheck_test }}{% else %}NONE{% endif %}"
+  timeout: "{{ tacker_server_healthcheck_timeout }}"
+
+tacker_conductor_enable_healthchecks: "{{ enable_container_healthchecks }}"
+tacker_conductor_healthcheck_interval: "{{ default_container_healthcheck_interval }}"
+tacker_conductor_healthcheck_retries: "{{ default_container_healthcheck_retries }}"
+tacker_conductor_healthcheck_start_period: "{{ default_container_healthcheck_start_period }}"
+tacker_conductor_healthcheck_test: ["CMD-SHELL", "healthcheck_port tacker-conductor {{ om_rpc_port }}"]
+tacker_conductor_healthcheck_timeout: "{{ default_container_healthcheck_timeout }}"
+tacker_conductor_healthcheck:
+  interval: "{{ tacker_conductor_healthcheck_interval }}"
+  retries: "{{ tacker_conductor_healthcheck_retries }}"
+  start_period: "{{ tacker_conductor_healthcheck_start_period }}"
+  test: "{% if tacker_conductor_enable_healthchecks | bool %}{{ tacker_conductor_healthcheck_test }}{% else %}NONE{% endif %}"
+  timeout: "{{ tacker_conductor_healthcheck_timeout }}"
+
 tacker_server_default_volumes:
   - "{{ node_config_directory }}/tacker-server/:{{ container_config_directory }}/:ro"
   - "{{ kolla_dev_repos_directory ~ '/tacker/tacker:/var/lib/kolla/venv/lib/python' ~ distro_python_version ~ '/site-packages/tacker' if tacker_dev_mode | bool else '' }}"

ansible/roles/tacker/handlers/main.yml

@@ -11,6 +11,7 @@
     image: "{{ service.image }}"
     volumes: "{{ service.volumes|reject('equalto', '')|list }}"
     dimensions: "{{ service.dimensions }}"
+    healthcheck: "{{ service.healthcheck | default(omit) }}"
   when:
     - kolla_action != "config"
 
@@ -26,5 +27,6 @@
     image: "{{ service.image }}"
     volumes: "{{ service.volumes|reject('equalto', '')|list }}"
     dimensions: "{{ service.dimensions }}"
+    healthcheck: "{{ service.healthcheck | default(omit) }}"
   when:
     - kolla_action != "config"

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

@@ -7,6 +7,7 @@
     image: "{{ item.value.image }}"
     volumes: "{{ item.value.volumes|reject('equalto', '')|list }}"
     dimensions: "{{ item.value.dimensions }}"
+    healthcheck: "{{ item.value.healthcheck | default(omit) }}"
   when:
     - item.value.host_in_groups | bool
     - item.value.enabled | bool

releasenotes/notes/implement-docker-healthchecks-for-tacker-aa8a2b2180d57a90.yaml

+---
+features:
+  - |
+    Implements container healthchecks for tacker services.
+    See `blueprint
+    <https://blueprints.launchpad.net/kolla-ansible/+spec/container-health-check>`__