ansible-playbook一键部署mysql双主集群
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:
- mysql3 剧本执行的每一项任务
[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
