Optimize reconfiguration for etcd

Co-Authored-By: caoyuan <cao.yuan@99cloud.net>
Change-Id: I1cd494afd3a76e832272e70e9e1e5a41a522a31e
Partially-implements: blueprint better-reconfigure

ansible/roles/etcd/defaults/main.yml

@@ -1,6 +1,30 @@
 ---
 project_name: "etcd"
 
+etcd_services:
+  etcd:
+    container_name: etcd
+    group: etcd
+    enabled: true
+    environment:
+      ETCD_DATA_DIR: "/var/lib/etcd"
+      ETCD_NAME: "{{ ansible_hostname }}"
+      ETCD_ADVERTISE_CLIENT_URLS: "{{ internal_protocol }}://{{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4']['address'] }}:{{ etcd_client_port }}"
+      ETCD_LISTEN_CLIENT_URLS: "{{ internal_protocol }}://{{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4']['address'] }}:{{ etcd_client_port }}"
+      ETCD_INITIAL_ADVERTISE_PEER_URLS: "{{ internal_protocol }}://{{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4']['address'] }}:{{ etcd_peer_port }}"
+      ETCD_LISTEN_PEER_URLS: "{{ internal_protocol }}://{{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4']['address'] }}:{{ etcd_peer_port }}"
+      ETCD_INITIAL_CLUSTER_TOKEN: "{{ etcd_cluster_token }}"
+      ETCD_INITIAL_CLUSTER: "{% for host in groups['etcd'] %}{{ hostvars[host]['ansible_hostname'] }}={{ internal_protocol }}://{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ etcd_peer_port }}{% if not loop.last %},{% endif %}{% endfor %}"
+      ETCD_INITIAL_CLUSTER_STATE: "new"
+      ETCD_OUT_FILE: "/var/log/kolla/etcd/etcd.log"
+      KOLLA_CONFIG_STRATEGY: "{{ config_strategy }}"
+    image: "{{ etcd_image_full }}"
+    volumes:
+      - "{{ node_config_directory }}/etcd/:{{ container_config_directory }}/:ro"
+      - "/etc/localtime:/etc/localtime:ro"
+      - "kolla_etcd:/var/lib/etcd/"
+      - "kolla_logs:/var/log/kolla/"
+
 
 ####################
 # Docker

ansible/roles/etcd/handlers/main.yml

@@ -0,0 +1,19 @@
+---
+- name: Restart etcd container
+  vars:
+    service_name: "etcd"
+    service: "{{ etcd_services[service_name] }}"
+    config_json: "{{ etcd_config_jsons.results|selectattr('item.key', 'equalto', service_name)|first }}"
+    etcd_container: "{{ check_etcd_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 }}"
+    volumes: "{{ service.volumes }}"
+  when:
+    - action != "config"
+    - inventory_hostname in groups[service.group]
+    - service.enabled | bool
+    - config_json.changed | bool
+      or etcd_container.changed | bool

ansible/roles/etcd/tasks/bootstrap.yml

@@ -1,5 +1,7 @@
 ---
 - name: Running etcd bootstrap container
+  vars:
+    etcd: "{{ etcd_services['etcd'] }}"
   kolla_docker:
     action: "start_container"
     common_options: "{{ docker_common_options }}"
@@ -7,13 +9,11 @@
     environment:
       KOLLA_BOOTSTRAP:
       KOLLA_CONFIG_STRATEGY: "{{ config_strategy }}"
-    image: "{{ etcd_image_full }}"
+    image: "{{ etcd.image }}"
     labels:
       BOOTSTRAP:
     name: "bootstrap_etcd"
     restart_policy: "never"
-    volumes:
-      - "{{ node_config_directory }}/etcd/:{{ container_config_directory }}/:ro"
-      - "/etc/localtime:/etc/localtime:ro"
-      - "kolla_etcd:/var/lib/etcd/"
-      - "kolla_logs:/var/log/kolla/"
+    volumes: "{{ etcd.volumes }}"
+  run_once: True
+  delegate_to: "{{ groups[etcd.group][0] }}"

ansible/roles/etcd/tasks/config.yml

@@ -1,15 +1,38 @@
 ---
 - name: Ensuring config directories exist
   file:
-    path: "{{ node_config_directory }}/{{ item }}"
+    path: "{{ node_config_directory }}/{{ item.key }}"
     state: "directory"
     recurse: yes
-  with_items:
-    - "etcd"
+  when:
+    - inventory_hostname in groups[item.value.group]
+    - item.value.enabled | bool
+  with_dict: "{{ etcd_services }}"
 
 - name: Copying over config.json files for services
   template:
-    src: "{{ item }}.json.j2"
-    dest: "{{ node_config_directory }}/{{ item }}/config.json"
-  with_items:
-    - "etcd"
+    src: "{{ item.key }}.json.j2"
+    dest: "{{ node_config_directory }}/{{ item.key }}/config.json"
+  register: etcd_config_jsons
+  when:
+    - inventory_hostname in groups[item.value.group]
+    - item.value.enabled | bool
+  with_dict: "{{ etcd_services }}"
+  notify:
+    - Restart etcd container
+
+- name: Check etcd containers
+  kolla_docker:
+    action: "compare_container"
+    common_options: "{{ docker_common_options }}"
+    name: "{{ item.value.container_name }}"
+    image: "{{ item.value.image }}"
+    volumes: "{{ item.value.volumes }}"
+  register: check_etcd_containers
+  when:
+    - action != "config"
+    - inventory_hostname in groups[item.value.group]
+    - item.value.enabled | bool
+  with_dict: "{{ etcd_services }}"
+  notify:
+    - Restart etcd container

ansible/roles/etcd/tasks/deploy.yml

@@ -3,4 +3,5 @@
 
 - include: bootstrap.yml
 
-- include: start.yml
+- name: Flush handlers
+  meta: flush_handlers

ansible/roles/etcd/tasks/pull.yml

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

ansible/roles/etcd/tasks/reconfigure.yml

@@ -1,64 +1,2 @@
 ---
-- 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: etcd, group: etcd }
-
-- 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: etcd, group: etcd }
-
-# NOTE(jeffrey4l): when config_strategy == 'COPY_ALWAYS'
-# and container env['KOLLA_CONFIG_STRATEGY'] == 'COPY_ONCE',
-# just remove the container and start again
-- 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: etcd, group: etcd }
-
-- name: Remove the containers
-  kolla_docker:
-    name: "{{ item[0]['name'] }}"
-    action: "remove_container"
-  register: remove_containers
-  when:
-    - inventory_hostname in groups[item[0]['group']]
-    - config_strategy == "COPY_ONCE" or item[1]['KOLLA_CONFIG_STRATEGY'] == 'COPY_ONCE'
-    - item[2]['rc'] == 1
-  with_together:
-    - [{ name: etcd, group: etcd }]
-    - "{{ 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:
-    - inventory_hostname in groups[item[0]['group']]
-    - config_strategy == 'COPY_ALWAYS'
-    - item[1]['KOLLA_CONFIG_STRATEGY'] != 'COPY_ONCE'
-    - item[2]['rc'] == 1
-  with_together:
-    - [{ name: etcd, group: etcd }]
-    - "{{ container_envs.results }}"
-    - "{{ check_results.results }}"
+- include: deploy.yml

ansible/roles/etcd/tasks/start.yml

@@ -1,24 +0,0 @@
----
-- name: Starting etcd container
-  kolla_docker:
-    action: "start_container"
-    common_options: "{{ docker_common_options }}"
-    environment:
-      ETCD_DATA_DIR: "/var/lib/etcd"
-      ETCD_NAME: "{{ ansible_hostname }}"
-      ETCD_ADVERTISE_CLIENT_URLS: "{{ internal_protocol }}://{{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4']['address'] }}:{{ etcd_client_port }}"
-      ETCD_LISTEN_CLIENT_URLS: "{{ internal_protocol }}://{{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4']['address'] }}:{{ etcd_client_port }}"
-      ETCD_INITIAL_ADVERTISE_PEER_URLS: "{{ internal_protocol }}://{{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4']['address'] }}:{{ etcd_peer_port }}"
-      ETCD_LISTEN_PEER_URLS: "{{ internal_protocol }}://{{ hostvars[inventory_hostname]['ansible_' + api_interface]['ipv4']['address'] }}:{{ etcd_peer_port }}"
-      ETCD_INITIAL_CLUSTER_TOKEN: "{{ etcd_cluster_token }}"
-      ETCD_INITIAL_CLUSTER: "{% for host in groups['etcd'] %}{{ hostvars[host]['ansible_hostname'] }}={{ internal_protocol }}://{{ hostvars[host]['ansible_' + hostvars[host]['api_interface']]['ipv4']['address'] }}:{{ etcd_peer_port }}{% if not loop.last %},{% endif %}{% endfor %}"
-      ETCD_INITIAL_CLUSTER_STATE: "new"
-      ETCD_OUT_FILE: "/var/log/kolla/etcd/etcd.log"
-      KOLLA_CONFIG_STRATEGY: "{{ config_strategy }}"
-    image: "{{ etcd_image_full }}"
-    name: "etcd"
-    volumes:
-      - "{{ node_config_directory }}/etcd/:{{ container_config_directory }}/:ro"
-      - "/etc/localtime:/etc/localtime:ro"
-      - "kolla_etcd:/var/lib/etcd/"
-      - "kolla_logs:/var/log/kolla/"

ansible/roles/etcd/tasks/upgrade.yml

@@ -1,4 +1,5 @@
 ---
 - include: config.yml
 
-- include: start.yml
+- name: Flush handlers
+  meta: flush_handlers