Optimize reconfiguration for collectd

Co-Authored-By: caoyuan <cao.yuan@99cloud.net>
Change-Id: I0604d262965b27b8bf6c560238811f81c830ea1a
Partially-implements: blueprint better-reconfigure

ansible/roles/collectd/defaults/main.yml

 ---
+collectd_services:
+  collectd:
+    container_name: collectd
+    group: collectd
+    enabled: true
+    image: "{{ collectd_image_full }}"
+    privileged: True
+    volumes:
+      - "{{ node_config_directory }}/collectd/:{{ container_config_directory }}/:ro"
+      - "{{node_config_directory }}/collectd/collectd.conf.d/:/etc/collectd/collectd.conf.d/"
+      - "/etc/localtime:/etc/localtime:ro"
+      - "kolla_logs:/var/log/kolla/"
+      - "/sys/:/sys/:ro"
+      - "/dev/:/dev/:ro"
+
 ####################
 # Docker
 ####################

ansible/roles/collectd/handlers/main.yml

+---
+- name: Restart collectd container
+  vars:
+    service_name: "collectd"
+    service: "{{ collectd_services[service_name] }}"
+    config_json: "{{ collectd_config_jsons.results|selectattr('item.key', 'equalto', service_name)|first }}"
+    collectd_container: "{{ check_collectd_containers.results|selectattr('item.key', 'equalto', service_name)|first }}"
+  kolla_docker:
+    action: "recreate_or_restart_container"
+    common_options: "{{ docker_common_options }}"
+    name: "{{ service.container_name }}"
+    image: "{{ service.image }}"
+    privileged: "{{ service.privileged | default(False) }}"
+    volumes: "{{ service.volumes }}"
+  when:
+    - action != "config"
+    - inventory_hostname in groups[service.group]
+    - service.enabled | bool
+    - config_json.changed | bool
+      or collectd_conf.changed | bool
+      or collectd_container.changed | bool

ansible/roles/collectd/tasks/config.yml

 ---
 - name: Ensuring collectd config directories exist
   file:
-    path: "{{ node_config_directory }}/{{ item }}"
+    path: "{{ node_config_directory }}/{{ item.key }}"
     state: "directory"
     recurse: yes
-  with_items:
-    - "collectd"
+  when:
+    - inventory_hostname in groups[item.value.group]
+    - item.value.enabled | bool
+  with_dict: "{{ collectd_services }}"
 
 - name: Ensuring Plugin directory exist
   file:
-    path: "{{ node_config_directory }}/{{ item }}/collectd.conf.d"
+    path: "{{ node_config_directory }}/{{ item.key }}/collectd.conf.d"
     state: "directory"
     recurse: yes
-  with_items:
-    - "collectd"
+  when:
+    - inventory_hostname in groups[item.value.group]
+    - item.value.enabled | bool
+  with_dict: "{{ collectd_services }}"
 
 - name: Copying over config.json files for services
   template:
-    src: "{{ item }}.json.j2"
-    dest: "{{ node_config_directory }}/{{ item }}/config.json"
-  with_items:
-    - "collectd"
+    src: "{{ item.key }}.json.j2"
+    dest: "{{ node_config_directory }}/{{ item.key }}/config.json"
+  register: collectd_config_jsons
+  when:
+    - inventory_hostname in groups[item.value.group]
+    - item.value.enabled | bool
+  with_dict: "{{ collectd_services }}"
+  notify:
+    - Restart collectd container
 
 - name: Copying over collectd.conf for services
+  vars:
+    service: "{{ collectd_services['collectd'] }}"
   template:
     src: "{{ item }}"
     dest: "{{ node_config_directory }}/collectd/collectd.conf"
@@ -31,3 +42,26 @@
     - "{{ node_custom_config }}/collectd/collectd.conf"
     - "{{ node_custom_config }}/collectd.conf"
     - "collectd.conf.j2"
+  register: collectd_conf
+  when:
+    - inventory_hostname in groups[service.group]
+    - service.enabled | bool
+  notify:
+    - Restart collectd container
+
+- name: Check collectd containers
+  kolla_docker:
+    action: "compare_container"
+    common_options: "{{ docker_common_options }}"
+    name: "{{ item.value.container_name }}"
+    image: "{{ item.value.image }}"
+    privileged: "{{ item.value.privileged | default(False) }}"
+    volumes: "{{ item.value.volumes }}"
+  register: check_collectd_containers
+  when:
+    - action != "config"
+    - inventory_hostname in groups[item.value.group]
+    - item.value.enabled | bool
+  with_dict: "{{ collectd_services }}"
+  notify:
+    - Restart collectd container

ansible/roles/collectd/tasks/deploy.yml

 ---
 - include: config.yml
 
-- include: start.yml
+- name: Flush handlers
+  meta: flush_handlers

ansible/roles/collectd/tasks/pull.yml

@@ -3,4 +3,8 @@
   kolla_docker:
     action: "pull_image"
     common_options: "{{ docker_common_options }}"
-    image: "{{ collectd_image_full }}"
+    image: "{{ item.value.image }}"
+  when:
+    - inventory_hostname in groups[item.value.group]
+    - item.value.enabled | bool
+  with_dict: "{{ collectd_services }}"

ansible/roles/collectd/tasks/reconfigure.yml

 ---
-- name: Ensuring the containers up
-  kolla_docker:
-    name: "{{ item.name }}"
-    action: "get_container_state"
-  register: container_state
-  failed_when: container_state.Running == false
-  when: inventory_hostname in groups[item.group]
-  with_items:
-    - { name: collectd, group: collectd }
-
-- include: config.yml
-
-- name: Check the configs
-  command: docker exec {{ item.name }} /usr/local/bin/kolla_set_configs --check
-  changed_when: false
-  failed_when: false
-  register: check_results
-  when: inventory_hostname in groups[item.group]
-  with_items:
-    - { name: collectd, group: collectd }
-
-- name: Containers config strategy
-  kolla_docker:
-    name: "{{ item.name }}"
-    action: "get_container_env"
-  register: container_envs
-  when: inventory_hostname in groups[item.group]
-  with_items:
-    - { name: collectd, group: collectd }
-
-- name: Remove the containers
-  kolla_docker:
-    name: "{{ item[0]['name'] }}"
-    action: "remove_container"
-  register: remove_containers
-  when:
-    - config_strategy == "COPY_ONCE" or item[1]['KOLLA_CONFIG_STRATEGY'] == 'COPY_ONCE'
-    - item[2]['rc'] == 1
-    - inventory_hostname in groups[item[0]['group']]
-  with_together:
-    - [{ name: collectd, group: collectd }]
-    - "{{ container_envs.results }}"
-    - "{{ check_results.results }}"
-
-- include: start.yml
-  when: remove_containers.changed
-
-- name: Restart containers
-  kolla_docker:
-    name: "{{ item[0]['name'] }}"
-    action: "restart_container"
-  when:
-    - config_strategy == 'COPY_ALWAYS'
-    - item[1]['KOLLA_CONFIG_STRATEGY'] != 'COPY_ONCE'
-    - item[2]['rc'] == 1
-    - inventory_hostname in groups[item[0]['group']]
-  with_together:
-    - [{ name: collectd, group: collectd }]
-    - "{{ container_envs.results }}"
-    - "{{ check_results.results }}"
+- include: deploy.yml

ansible/roles/collectd/tasks/start.yml

----
-- name: Starting collectd container
-  kolla_docker:
-    action: "start_container"
-    common_options: "{{ docker_common_options }}"
-    image: "{{ collectd_image_full }}"
-    name: "collectd"
-    privileged: True
-    volumes:
-      - "{{ node_config_directory }}/collectd/:{{ container_config_directory }}/:ro"
-      - "/etc/localtime:/etc/localtime:ro"
-      - "kolla_logs:/var/log/kolla/"
-      - "/sys/:/sys/:ro"
-      - "/dev/:/dev/:ro"

ansible/roles/collectd/tasks/upgrade.yml

 ---
 - include: config.yml
 
-- include: start.yml
+- name: Flush handlers
+  meta: flush_handlers