Optimize reconfiguration for multipathd

Change-Id: I288fa5ea202376d481de6966150e7e050e390f03
Partially-implements: blueprint better-reconfigure
Co-Authored-By: caoyuan <cao.yuan@99cloud.net>
Closes-Bug: #1796219

ansible/roles/multipathd/defaults/main.yml

 ---
 project_name: "multipathd"
 
+multipathd_services:
+  multipathd:
+    container_name: multipathd
+    group: multipathd
+    enabled: true
+    ipc_mode: "host"
+    privileged: True
+    image: "{{ multipathd_image_full }}"
+    volumes:
+      - "{{ node_config_directory }}/multipathd/:{{ container_config_directory }}/:ro"
+      - "kolla_logs:/var/log/kolla/"
+      - "/etc/localtime:/etc/localtime:ro"
+      - "/dev/:/dev/"
+      - "/run/:/run/:shared"
+      - "/sys/fs/cgroup:/sys/fs/cgroup:ro"
+      - "/lib/modules:/lib/modules:ro"
+      - "/sys/kernel/config:/configfs"
+      - "cinder:/var/lib/cinder"
+      - "iscsi_info:/etc/iscsi"
+
+
 ####################
 # Docker
 ####################

ansible/roles/multipathd/handlers/main.yml

+---
+- name: Restart multipathd container
+  vars:
+    service_name: "multipathd"
+    service: "{{ multipathd_services[service_name] }}"
+    config_json: "{{ multipathd_config_jsons.results|selectattr('item.key', 'equalto', service_name)|first }}"
+    multipathd_conf: "{{ multipathd_confs.results|selectattr('item.key', 'equalto', service_name)|first }}"
+    multipathd_container: "{{ check_multipathd_containers.results|selectattr('item.key', 'equalto', service_name)|first }}"
+  become: true
+  kolla_docker:
+    action: "recreate_or_restart_container"
+    common_options: "{{ docker_common_options }}"
+    name: "{{ service.container_name }}"
+    image: "{{ service.image }}"
+    ipc_mode: "{{ service.ipc_mode }}"
+    privileged: "{{ service.privileged }}"
+    volumes: "{{ service.volumes|reject('equalto', '')|list }}"
+  when:
+    - kolla_action != "config"
+    - inventory_hostname in groups[service.group]
+    - service.enabled | bool
+    - config_json.changed | bool
+      or multipathd_conf.changed | bool
+      or multipathd_container.changed | bool

ansible/roles/multipathd/tasks/config.yml

 ---
 - name: Ensuring config directories exist
   file:
-    path: "{{ node_config_directory }}/{{ item }}"
+    path: "{{ node_config_directory }}/{{ item.key }}"
     state: "directory"
     owner: "{{ config_owner_user }}"
     group: "{{ config_owner_group }}"
     mode: "0770"
   become: true
-  when: inventory_hostname in groups['multipathd']
-  with_items:
-    - "multipathd"
+  when:
+    - inventory_hostname in groups[item.value.group]
+    - item.value.enabled | bool
+  with_dict: "{{ multipathd_services }}"
 
 - name: Copying over config.json files for services
   template:
-    src: "{{ item }}.json.j2"
-    dest: "{{ node_config_directory }}/{{ item }}/config.json"
+    src: "{{ item.key }}.json.j2"
+    dest: "{{ node_config_directory }}/{{ item.key }}/config.json"
     mode: "0660"
   become: true
-  when: inventory_hostname in groups['multipathd']
-  with_items:
-    - "multipathd"
+  register: multipathd_config_jsons
+  when:
+    - inventory_hostname in groups[item.value.group]
+    - item.value.enabled | bool
+  with_dict: "{{ multipathd_services }}"
+  notify:
+    - Restart multipathd container
 
 - name: Copying over multipath.conf
   template:
-    src: "{{ role_path }}/templates/multipath.conf.j2"
-    dest: "{{ node_config_directory }}/{{ item }}/multipath.conf"
+    src: "multipath.conf.j2"
+    dest: "{{ node_config_directory }}/{{ item.key }}/multipath.conf"
     mode: "0660"
   become: true
-  with_items:
-    - "multipathd"
+  register: multipathd_confs
+  when:
+    - inventory_hostname in groups[item.value.group]
+    - item.value.enabled | bool
+  with_dict: "{{ multipathd_services }}"
+  notify:
+    - Restart multipathd container
+
+- name: Check multipathd containers
+  kolla_docker:
+    action: "compare_container"
+    common_options: "{{ docker_common_options }}"
+    name: "{{ item.value.container_name }}"
+    image: "{{ item.value.image }}"
+    ipc_mode: "{{ item.value.ipc_mode }}"
+    privileged: "{{ item.value.privileged | default(False) }}"
+    volumes: "{{ item.value.volumes }}"
+  register: check_multipathd_containers
+  when:
+    - kolla_action != "config"
+    - inventory_hostname in groups[item.value.group]
+    - item.value.enabled | bool
+  with_dict: "{{ multipathd_services }}"
+  notify:
+    - Restart multipathd container

ansible/roles/multipathd/tasks/deploy.yml

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

ansible/roles/multipathd/tasks/pull.yml

@@ -4,5 +4,8 @@
   kolla_docker:
     action: "pull_image"
     common_options: "{{ docker_common_options }}"
-    image: "{{ multipathd_image_full }}"
-  when: inventory_hostname in groups['multipathd']
+    image: "{{ item.value.image }}"
+  when:
+    - inventory_hostname in groups[item.value.group]
+    - item.value.enabled | bool
+  with_dict: "{{ multipathd_services }}"

ansible/roles/multipathd/tasks/start.yml

----
-- name: Starting multipathd container
-  become: true
-  kolla_docker:
-    action: "start_container"
-    common_options: "{{ docker_common_options }}"
-    image: "{{ multipathd_image_full }}"
-    name: "multipathd"
-    ipc_mode: "host"
-    privileged: True
-    volumes:
-      - "{{ node_config_directory }}/multipathd/:{{ container_config_directory }}/:ro"
-      - "kolla_logs:/var/log/kolla/"
-      - "/etc/localtime:/etc/localtime:ro"
-      - "/dev/:/dev/"
-      - "/run/:/run/:shared"
-      - "/sys/fs/cgroup:/sys/fs/cgroup:ro"
-      - "/lib/modules:/lib/modules:ro"
-      - "/sys/kernel/config:/configfs"
-      - "cinder:/var/lib/cinder"
-      - "iscsi_info:/etc/iscsi"
-  when: inventory_hostname in groups['multipathd']

ansible/roles/multipathd/tasks/upgrade.yml

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