Use Docker healthchecks for cyborg services

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

Change-Id: I5326b142eaa826f97c32498cd2a9a0cba65be698

ansible/roles/cyborg/defaults/main.yml

@@ -9,6 +9,7 @@ cyborg_services:
     image: "{{ cyborg_api_image_full }}"
     volumes: "{{ cyborg_api_default_volumes + cyborg_api_extra_volumes }}"
     dimensions: "{{ cyborg_api_dimensions }}"
+    healthcheck: "{{ cyborg_api_healthcheck }}"
   cyborg-agent:
     container_name: cyborg_agent
     group: cyborg-agent
@@ -17,6 +18,7 @@ cyborg_services:
     image: "{{ cyborg_agent_image_full }}"
     volumes: "{{ cyborg_agent_default_volumes + cyborg_agent_extra_volumes }}"
     dimensions: "{{ cyborg_agent_dimensions }}"
+    healthcheck: "{{ cyborg_agent_healthcheck }}"
   cyborg-conductor:
     container_name: cyborg_conductor
     group: cyborg-conductor
@@ -24,6 +26,7 @@ cyborg_services:
     image: "{{ cyborg_conductor_image_full }}"
     volumes: "{{ cyborg_conductor_default_volumes + cyborg_conductor_extra_volumes }}"
     dimensions: "{{ cyborg_conductor_dimensions }}"
+    healthcheck: "{{ cyborg_conductor_healthcheck }}"
 
 ####################
 # Database
@@ -54,6 +57,45 @@ cyborg_api_dimensions: "{{ default_container_dimensions }}"
 cyborg_agent_dimensions: "{{ default_container_dimensions }}"
 cyborg_conductor_dimensions: "{{ default_container_dimensions }}"
 
+cyborg_api_enable_healthchecks: "{{ enable_container_healthchecks }}"
+cyborg_api_healthcheck_interval: "{{ default_container_healthcheck_interval }}"
+cyborg_api_healthcheck_retries: "{{ default_container_healthcheck_retries }}"
+cyborg_api_healthcheck_start_period: "{{ default_container_healthcheck_start_period }}"
+cyborg_api_healthcheck_test: ["CMD-SHELL", "healthcheck_curl http://{{ api_interface_address |  put_address_in_context('url') }}:{{ cyborg_api_port }}"]
+cyborg_api_healthcheck_timeout: "{{ default_container_healthcheck_timeout }}"
+cyborg_api_healthcheck:
+  interval: "{{ cyborg_api_healthcheck_interval }}"
+  retries: "{{ cyborg_api_healthcheck_retries }}"
+  start_period: "{{ cyborg_api_healthcheck_start_period }}"
+  test: "{% if cyborg_api_enable_healthchecks | bool %}{{ cyborg_api_healthcheck_test }}{% else %}NONE{% endif %}"
+  timeout: "{{ cyborg_api_healthcheck_timeout }}"
+
+cyborg_agent_enable_healthchecks: "{{ enable_container_healthchecks }}"
+cyborg_agent_healthcheck_interval: "{{ default_container_healthcheck_interval }}"
+cyborg_agent_healthcheck_retries: "{{ default_container_healthcheck_retries }}"
+cyborg_agent_healthcheck_start_period: "{{ default_container_healthcheck_start_period }}"
+cyborg_agent_healthcheck_test: ["CMD-SHELL", "healthcheck_port cyborg-agent {{ om_rpc_port }}"]
+cyborg_agent_healthcheck_timeout: "{{ default_container_healthcheck_timeout }}"
+cyborg_agent_healthcheck:
+  interval: "{{ cyborg_agent_healthcheck_interval }}"
+  retries: "{{ cyborg_agent_healthcheck_retries }}"
+  start_period: "{{ cyborg_agent_healthcheck_start_period }}"
+  test: "{% if cyborg_agent_enable_healthchecks | bool %}{{ cyborg_agent_healthcheck_test }}{% else %}NONE{% endif %}"
+  timeout: "{{ cyborg_agent_healthcheck_timeout }}"
+
+cyborg_conductor_enable_healthchecks: "{{ enable_container_healthchecks }}"
+cyborg_conductor_healthcheck_interval: "{{ default_container_healthcheck_interval }}"
+cyborg_conductor_healthcheck_retries: "{{ default_container_healthcheck_retries }}"
+cyborg_conductor_healthcheck_start_period: "{{ default_container_healthcheck_start_period }}"
+cyborg_conductor_healthcheck_test: ["CMD-SHELL", "healthcheck_port cyborg-conductor {{ om_rpc_port }}"]
+cyborg_conductor_healthcheck_timeout: "{{ default_container_healthcheck_timeout }}"
+cyborg_conductor_healthcheck:
+  interval: "{{ cyborg_conductor_healthcheck_interval }}"
+  retries: "{{ cyborg_conductor_healthcheck_retries }}"
+  start_period: "{{ cyborg_conductor_healthcheck_start_period }}"
+  test: "{% if cyborg_conductor_enable_healthchecks | bool %}{{ cyborg_conductor_healthcheck_test }}{% else %}NONE{% endif %}"
+  timeout: "{{ cyborg_conductor_healthcheck_timeout }}"
+
 cyborg_api_default_volumes:
   - "{{ node_config_directory }}/cyborg-api/:{{ container_config_directory }}/:ro"
   - "/etc/localtime:/etc/localtime:ro"

ansible/roles/cyborg/handlers/main.yml

@@ -12,6 +12,7 @@
     privileged: "{{ service.privileged | default(False) }}"
     volumes: "{{ service.volumes }}"
     dimensions: "{{ service.dimensions }}"
+    healthcheck: "{{ service.healthcheck | default(omit) }}"
   when:
     - kolla_action != "config"
 
@@ -28,6 +29,7 @@
     privileged: "{{ service.privileged | default(False) }}"
     volumes: "{{ service.volumes }}"
     dimensions: "{{ service.dimensions }}"
+    healthcheck: "{{ service.healthcheck | default(omit) }}"
   when:
     - kolla_action != "config"
 
@@ -44,5 +46,6 @@
     privileged: "{{ service.privileged | default(False) }}"
     volumes: "{{ service.volumes }}"
     dimensions: "{{ service.dimensions }}"
+    healthcheck: "{{ service.healthcheck | default(omit) }}"
   when:
     - kolla_action != "config"

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

@@ -9,6 +9,7 @@
     privileged: "{{ item.value.privileged | default(False) }}"
     volumes: "{{ item.value.volumes }}"
     dimensions: "{{ item.value.dimensions }}"
+    healthcheck: "{{ item.value.healthcheck | default(omit) }}"
   when:
     - inventory_hostname in groups[item.value.group]
     - item.value.enabled | bool

releasenotes/notes/implement-docker-healthchecks-for-cyborg-a4b6edb97a09cce5.yaml

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