ansible-playbook一键部署mysql双主集群

怼烎@ 2021-11-17 11:38 877阅读 0赞

前面的博客中，介绍过mysql的双主集群的搭建，那么ansible就是将之前的手动的操作过程转换成剧本的方式，然后执行剧本，就完成了mysql的双主集群的搭建，具体的搭建过程可看之前的mysql的博客模块，下面是ansible部署mysql双主的文件结构

[root@wyl01 mysql]# tree 
    .
    ├── group_vars
    │   └── mysql.yml    # 存放的是所用到的参数
    ├── hosts            # 主机清单
    ├── README.txt
    ├── roles
    │   └── mysql
    │       ├── files
    │       │   └── mysql-5.7.20-linux-glibc2.12-x86_64.tar.gz   # 安装的版本
    │       ├── tasks     #目录下面是具体的每一项任务
    │       │   ├── add_user.yml                    
    │       │   ├── change_slave_to_master.yml
    │       │   ├── install_mysql.yml
    │       │   ├── main.yml
    │       │   └── pre_install.yml
    │       └── templates     # 模板文件
    │           ├── my.cnf.j2
    │           └── mysql.service.j2
    └── site.yml   # 执行的入口文件

1. 查看主机清单和所用到的变量

[root@wyl01 mysql]# cat hosts    #主机清单
    [mysql]
    wyl02   ansible_ssh_host=192.168.52.129   ansible_ssh_pass=123456  master=true
    wyl03   ansible_ssh_host=192.168.52.130   ansible_ssh_pass=123456  slave=true
    
    
    [root@wyl01 mysql]# cat group_vars/mysql.yml    # 变量，下面有的参数使用是为了多实例部署，是剧本具有高效性
    ---
    mysql_version: mysql-5.7.20-linux-glibc2.12-x86_64
    mysql_install_path: /usr/local
    mysql_link: mysql
    mysql_sock: /tmp/mysql.sock
    mysql_port: 3306
    mysql_root_passwd: "123456"
    master_ip: 192.168.52.129
    slave_ip: 192.168.52.130
    repl_user: repl
    repl_passwd: "123456"

2 剧本的入口文件

[root@wyl01 mysql]# cat site.yml 
    ---
    - hosts: all
      gather_facts: yes
      roles:
        - mysql

3 剧本执行的每一项任务

![20190730194840849.png][]

[root@wyl01 tasks]# cat pre_install.yml    # 安装前的准备工作
    - name: install_MySQL-python
      yum:
        name: MySQL-python
        state: latest
      tags:
        - install_MySQL-python

[root@wyl01 tasks]# cat add_user.yml    # mysql的用户
    ---
    - name: add_mysql_user
      user:
        name: mysql
        create_home: no
        shell: /sbin/nologin
      tags:
        - add_mysql_user

[root@wyl01 tasks]# cat install_mysql.yml    # 解压，授权，启动，修改初始化密码等操作
    ---
    - name:  unarchive_mysql_tar
      unarchive:
        src:  "{
       { mysql_version }}.tar.gz"
        dest: "{
       { mysql_install_path }}"
        owner: mysql
        group: mysql
      tags:
        - unarchive_mysql_tar
    
    
    - name: chown_mysql
      file: 
        dest: "{
       { mysql_install_path }}/{
       {mysql_version}}"
        owner: mysql
        group: mysql
        recurse: yes
      tags:
        - chown_mysql
    
    
    - name: link_mysql
      file:
        src: "{
       { mysql_install_path }}/{
       {mysql_version}}"
        dest: "{
       { mysql_install_path }}/{
       { mysql_link }}"
        owner: mysql
        group: mysql
        state: link
      tags:
        - link_mysql
    
    
    
    - name: mkdir_log
      file:
        path: "{
       { mysql_install_path }}/{
       { mysql_link }}/log"
        owner: mysql
        group: mysql
        state: directory
      tags:
        - mkdir_log
    
    
    
    - name: touch_mysql.log
      file:
        path: "{
       { mysql_install_path }}/{
       { mysql_link }}/log/mysqld.log"
        owner: mysql
        group: mysql
        state: touch
      tags:
        - touch_mysql.log
    
    
    - name: copy_my.cnf
      template:
        src: my.cnf.j2
        dest: /etc/my.cnf
      tags:
        - copy_my.cnf
     
    
    
    - name: init_mysql
      shell: ./bin/mysqld --initialize  --user=mysql
      args:
        chdir: "{
       { mysql_install_path }}/{
       { mysql_link }}"
      tags: 
        - init_mysql
        
    
    - name: get_mysql_passwd
      shell: cat log/mysqld.log |grep localhost|awk -F ':' '{print $4}'|cut -c  2-
      register: mysql_init_passwd
      args:  
        chdir: "{
       { mysql_install_path }}/{
       { mysql_link }}"
      tags: 
        - get_mysql_passwd
    
    
    
    - name: dispaly_passwd
      debug: 
        msg: "{
       { mysql_init_passwd.stdout }}"
      tags:
        - dispaly_passwd
    
    
    
    - name: copy_mysql.server
      copy:
        src: "{
       { mysql_install_path }}/{
       { mysql_link }}/support-files/mysql.server"
        dest: /etc/init.d/mysql-{
       { mysql_port }}.server
        mode: 0755
      tags:
         - copy_mysql.server
    
    
    
    - name: add_mysql_systemd
      template:
        src: mysql.service.j2
        dest: /etc/systemd/system/mysql-{
       { mysql_port }}.service
      tags:
        - add_mysql_systemd
    
    
    
    - name: start_mysql_service
      systemd:
        name: mysql-{
       { mysql_port }}
        daemon_reload: yes
        enabled: yes
        state: restarted
      tags:
        - start_mysql_service
    
    
    
    - name: alter_passwd
      shell: ./bin/mysqladmin -u root -p'{
       {mysql_init_passwd.stdout}}' password '{
       { mysql_root_passwd }}'
      args:
        chdir: "{
       { mysql_install_path }}/{
       { mysql_link }}"
      tags:
        - alter_passwd

[root@wyl01 mysql]# cat roles/mysql/tasks/change_slave_to_master.yml     #change master操作 
    ---
    - name: create_user
      mysql_user: 
        login_host: 127.0.0.1
        login_port: "{
       { mysql_port }}"
        login_user: root 
        login_password: "{
       { mysql_root_passwd }}"
        name: "{
       { repl_user }}"
        password: "{
       { repl_passwd }}"
        priv: "*.*:ALL"
        state: present 
        host: "%"
      when: master is defined
      tags:
        - create_user
    
    
    
    - name: change_slave_to_master1
      mysql_replication:
        login_unix_socket: "{
       { mysql_sock }}"
        login_host: 127.0.0.1
        login_port: "{
       { mysql_port }}"
        login_user: root     
        login_password: "{
       { mysql_root_passwd }}"
        master_host: "{
       { master_ip }} " 
        master_user: "{
       { repl_user }}" 
        master_password: "{
       { repl_passwd }}"
        master_port: "{
       { mysql_port }}"
        master_auto_position: "1"
        mode: changemaster
      when: slave is defined
      tags:
        - change_slave_to_master1 
    
    
    - name: start_slave1
      mysql_replication: 
        login_unix_socket: "{
       { mysql_sock }}"
        login_user: root 
        login_host: 127.0.0.1
        login_port: "{
       { mysql_port }}"
        login_password: "{
       { mysql_root_passwd }}"
        mode: startslave
      tags: 
        - start_slave1
    
    
    - name: change_slave_to_master2
      mysql_replication:
        login_unix_socket: "{
       { mysql_sock }}"
        login_host: 127.0.0.1
        login_port: "{
       { mysql_port }}"
        login_user: root
        login_password: "{
       { mysql_root_passwd }}"
        master_host: "{
       { slave_ip }} "
        master_user: "{
       { repl_user }}"
        master_password: "{
       { repl_passwd }}"
        master_port: "{
       { mysql_port }}"
        master_auto_position: "1"
        mode: changemaster
      when: master is defined
      tags:
        - change_slave_to_master2
    
    
    - name: start_slave2
      mysql_replication:
        login_unix_socket: "{
       { mysql_sock }}"
        login_user: root
        login_host: 127.0.0.1
        login_port: "{
       { mysql_port }}"
        login_password: "{
       { mysql_root_passwd }}"
        mode: startslave
      tags:
        - start_slave2
    
    - name: get_slave_info
      mysql_replication:
        login_host: 127.0.0.1
        login_user: root
        login_port: 3306
        login_password: "123456"
        mode: getslave
      register: info
      tags:
        - get_slave_info
    
    
    - name: dispaly_slave
      debug:
        msg: "Slave_SQL_Running={
       { info.Slave_IO_Running }}       Slave_SQL_Running={
       { info.Slave_SQL_Running }}"
      tags:
        - dispaly_slave

执行结果如下：

[root@wyl01 mysql]# ansible-playbook  -i hosts  site.yml 
    
    PLAY [all] **********************************************************************************************************************************************************************************
    
    TASK [Gathering Facts] **********************************************************************************************************************************************************************
    ok: [wyl03]
    ok: [wyl02]
    
    TASK [mysql : install_MySQL-python] *********************************************************************************************************************************************************
    ok: [wyl02]
    ok: [wyl03]
    
    TASK [mysql : add_mysql_user] ***************************************************************************************************************************************************************
    ok: [wyl03]
    ok: [wyl02]
    
    TASK [mysql : unarchive_mysql_tar] **********************************************************************************************************************************************************
    changed: [wyl03]
    changed: [wyl02]
    
    TASK [mysql : chown_mysql] ******************************************************************************************************************************************************************
    changed: [wyl03]
    changed: [wyl02]
    
    TASK [mysql : link_mysql] *******************************************************************************************************************************************************************
    changed: [wyl02]
    changed: [wyl03]
    
    TASK [mysql : mkdir_log] ********************************************************************************************************************************************************************
    changed: [wyl02]
    changed: [wyl03]
    
    TASK [mysql : touch_mysql.log] **************************************************************************************************************************************************************
    changed: [wyl02]
    changed: [wyl03]
    
    TASK [mysql : copy_my.cnf] ******************************************************************************************************************************************************************
    ok: [wyl03]
    ok: [wyl02]
    
    TASK [mysql : init_mysql] *******************************************************************************************************************************************************************
    changed: [wyl03]
    changed: [wyl02]
    
    TASK [mysql : get_mysql_passwd] *************************************************************************************************************************************************************
    changed: [wyl03]
    changed: [wyl02]
    
    TASK [mysql : dispaly_passwd] ***************************************************************************************************************************************************************
    ok: [wyl02] => {
        "msg": "tosEGBto+3xg"
    }
    ok: [wyl03] => {
        "msg": "&CUQdQ&Qb7S4"
    }
    
    TASK [mysql : copy_mysql.server] ************************************************************************************************************************************************************
    ok: [wyl03]
    ok: [wyl02]
    
    TASK [mysql : add_mysql_systemd] ************************************************************************************************************************************************************
    ok: [wyl03]
    ok: [wyl02]
    
    TASK [mysql : start_mysql_service] **********************************************************************************************************************************************************
    changed: [wyl03]
    changed: [wyl02]
    
    TASK [mysql : alter_passwd] *****************************************************************************************************************************************************************
    changed: [wyl03]
    changed: [wyl02]
    
    TASK [mysql : create_user] ******************************************************************************************************************************************************************
    skipping: [wyl03]
    changed: [wyl02]
    
    TASK [mysql : change_slave_to_master1] ******************************************************************************************************************************************************
    skipping: [wyl02]
    changed: [wyl03]
    
    TASK [mysql : start_slave1] *****************************************************************************************************************************************************************
    ok: [wyl02]
    changed: [wyl03]
    
    TASK [mysql : change_slave_to_master2] ******************************************************************************************************************************************************
    skipping: [wyl03]
    changed: [wyl02]
    
    TASK [mysql : start_slave2] *****************************************************************************************************************************************************************
    changed: [wyl02]
    ok: [wyl03]
    
    PLAY RECAP **********************************************************************************************************************************************************************************
    wyl02                      : ok=20   changed=12   unreachable=0    failed=0    skipped=1    rescued=0    ignored=0   
    wyl03                      : ok=19   changed=11   unreachable=0    failed=0    skipped=2    rescued=0    ignored=0

最后显示sql和i/o进程yes状态，看到两个yes状态表示安装成功

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d5bDk1Mjc_size_16_color_FFFFFF_t_70][]

[20190730194840849.png]: /images/20211116/74765895c7ca4103a8eda6bd9a1e1628.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3d5bDk1Mjc_size_16_color_FFFFFF_t_70]: /images/20211116/faf143327491459e9970ac7fdf5c3fc4.png