例: ansible roles 自動化安裝memcached

文件目錄結構如下：

cat memcached_role.yml

- hosts: memcached
  remote_user: root
  
  roles:
    - memcached

cat roles/memcached/vars/main.yml

username: memcached
groupname: memcached
memcached_port: 11211

cat roles/memcached/templates/memcached.j2

PORT="{{ memcached_port }}"
USER="{{ username }}"
MAXCONN="1024"
CACHESIZE="{{ ansible_memtotal_mb//4 }}"
OPTIONS=""

cat roles/memcached/handlers/main.yml

- name: restart service
  service: name=memcached state=restarted

cat roles/memcached/tasks/main.yml

- import_tasks: group.yml
 
- import_tasks: user.yml
- import_tasks: yum.yml
- import_tasks: templ.yml
- import_tasks: copyfile.yml
- import_tasks: start.yml

cat roles/memcached/tasks/group.yml

- name: create group
  group: name={{ username }} system=yes gid=11211

cat roles/memcached/tasks/user.yml

- name: create user
  user: name
 
={{ username }} group={{ groupname }} uid=11211 system=yes shell=/sbin/nologin

cat roles/memcached/tasks/yum.yml

- name: install service
  yum: name=memcached

cat roles/memcached/tasks/templ.yml

- name: copy templ
  template: src=memcached.j2 dest=/etc/sysconfig/memcached
  notify: restart service

cat roles/memcached/tasks/copyfile.yml

- name: copy file
  copy: src=memcached.log dest=/data/ owner={{ username }}

cat roles/memcached/tasks/start.yml

- name: start service
  service: name=memcached enabled=yes state=started

測試:

ansible-playbook -C memcached_role.yml

執行:

ansible-playbook  memcached_role.yml

ansible roles 自動化安裝