Ansible操作MySQL常用的几个模块

- name: 创建MySQL数据库用户--user_test
  mysql_user:
    # ----- 登陆数据库
    login_host: "localhost"
    login_port: 3306
    login_user: root
    login_password: "{{ root_password }}"
    ## 添加login_unix_socket，否则报错:FAILED! => {"ansible_facts": {"discovered_interpreter_python": "/usr/bin/python"}, "changed": false, "msg": "unable to connect to database, check login_user and login_password are correct or /root/.my.cnf has the credentials. Exception message: (2002, \"Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)\
    login_unix_socket: "/你sock文件的路径/mysql.sock"
    # ----- 创建的用户的信息
    name: "user_test"
    host: "%"
    password: "{{ user_test_password }}"
    priv: "{{ item }}"
    # -----
    state: present
  with_items:
    - "*.*:REPLICATION SLAVE,REPLICATION CLIENT"
    - "*.*:PROCESS"
    - "performance_schema.*:select"
    ### 权限之间不要有空格，否则报错--例如:(item=*.*:REPLICATION SLAVE, REPLICATION CLIENT) => {"ansible_loop_var": "item", "changed": false, "item": "*.*:REPLICATION SLAVE, REPLICATION CLIENT", "msg": "invalid privileges string: Invalid privileges specified: frozenset([' REPLICATION CLIENT'])"}

- hosts: db_servers
tasks:
- name: Query MySQL table
mysql_query:
login_host: localhost
login_user: db_user
login_password: db_pass
db: db_name
query: SELECT * FROM table_name WHERE column_name = 'value';
register: result
- name: Print query result
debug:
var: result.stdout_lines

# 从库，执行Change Master
# -- 只有是从库的时候，才需要执行这一步
- name: "从库：Change Master"
  mysql_replication:
    mode: changemaster
    # ------------
    # 登陆MySQL
    login_user: root
    login_password: "{{ mysql_database_user_root_password }}"
    # ------------
    # Change Master
    master_host: "{{ mysql_replication_master_host }}"
    master_port: "{{ mysql_replication_master_port }}"
    master_user: "{{ mysql_replication_user_name }}"
    master_password: "{{ mysql_replication_user_password }}"
    master_log_file: "{{ mysql_replication_master_status['File'] }}"
    master_log_pos: "{{ mysql_replication_master_status['Position'] }}"
  when: db_role == "slave"

# 从库：Start Slave
# -- 只有是从库的时候，才需要执行这一步
- name: 从库：Start Slave
  mysql_replication:
    mode: startslave
    # ------------
    # 登陆MySQL
    login_user: root
    login_password: "{{ mysql_database_user_root_password }}"
    # ------------
  when: db_role == "slave"

# 从库：获取从库信息
- name: 从库：获取从库信息
  mysql_replication:
    mode: getslave
    # ------------
    # 登陆MySQL
    login_user: root
    login_password: "{{ mysql_database_user_root_password }}"
    # ------------
  register: mysql_replication_slave_status
  when: db_role == "slave"

# 输出从库信息
- name: "从库：Slave Status"
  debug:
    msg: "Slave_IO_Running【{{ mysql_replication_slave_status['Slave_IO_Running'] }}】 / Slave_SQL_Running【{{ mysql_replication_slave_status['Slave_SQL_Running'] }}】 / Slave_SQL_Running_State【{{ mysql_replication_slave_status['Slave_SQL_Running_State'] }}】 / Seconds_Behind_Master【{{ mysql_replication_slave_status['Seconds_Behind_Master'] }}】"
  when: db_role == "slave"

# 启动MySQL服务
- name: 启动MySQL服务
  service:
    name: mysqld
    state: started
    enabled: yes

mysqladmin -h localhost -u root -p'在path_mysql_error_log中查找的 A temporary password' password '新密码'

mysqladmin -u root password "newpassword"

# 通过得到的临时口令，修改数据库的口令为变量文件中设置的口令
- name: 修改MySQL的临时口令
  shell: "mysqladmin -h localhost -u root password '{{ new_root_password }}'"
  ignore_errors: yes