Use Docker healthchecks for kibana services

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

Change-Id: If7525e193c245435410b4071aed6d3b566424219

ansible/roles/kibana/defaults/main.yml

@@ -9,6 +9,7 @@ kibana_services:
     group: "kibana"
     volumes: "{{ kibana_default_volumes + kibana_extra_volumes }}"
     dimensions: "{{ kibana_dimensions }}"
+    healthcheck: "{{ kibana_healthcheck }}"
     haproxy:
       kibana:
         enabled: "{{ enable_kibana }}"
@@ -44,6 +45,19 @@ kibana_tag: "{{ openstack_tag }}"
 kibana_image_full: "{{ kibana_image }}:{{ kibana_tag }}"
 kibana_dimensions: "{{ default_container_dimensions }}"
 
+kibana_enable_healthchecks: "{{ enable_container_healthchecks }}"
+kibana_healthcheck_interval: "{{ default_container_healthcheck_interval }}"
+kibana_healthcheck_retries: "{{ default_container_healthcheck_retries }}"
+kibana_healthcheck_start_period: "{{ default_container_healthcheck_start_period }}"
+kibana_healthcheck_test: ["CMD-SHELL", "healthcheck_curl http://{{ api_interface_address |  put_address_in_context('url') }}:{{ kibana_server_port }}"]
+kibana_healthcheck_timeout: "{{ default_container_healthcheck_timeout }}"
+kibana_healthcheck:
+  interval: "{{ kibana_healthcheck_interval }}"
+  retries: "{{ kibana_healthcheck_retries }}"
+  start_period: "{{ kibana_healthcheck_start_period }}"
+  test: "{% if kibana_enable_healthchecks | bool %}{{ kibana_healthcheck_test }}{% else %}NONE{% endif %}"
+  timeout: "{{ kibana_healthcheck_timeout }}"
+
 kibana_default_volumes:
   - "{{ node_config_directory }}/kibana/:{{ container_config_directory }}/:ro"
   - "/etc/localtime:/etc/localtime:ro"

ansible/roles/kibana/handlers/main.yml

@@ -11,5 +11,6 @@
     image: "{{ service.image }}"
     volumes: "{{ service.volumes }}"
     dimensions: "{{ service.dimensions }}"
+    healthcheck: "{{ service.healthcheck | default(omit) }}"
   when:
     - kolla_action != "config"

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

@@ -8,6 +8,7 @@
     image: "{{ item.value.image }}"
     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-kibana-4aff69122b158c00.yaml

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