准备环境
Ansible 主机: 10.4.0.57
Mysql Master: 10.4.0.17
Mysql Slave: 10.4.0.22
所有操作都在Ansible主机上进行
执行步骤：
1. 安装ansible 2.9
pip install ansible==2.9
2. 配置 Ansible到Master和Slave主机免密
ssh-copy-id 10.4.0.17 #需要输入root的密码
ssh-copy-id 10.4.0.22 #需要输入root的密码
3. 下载ansible 源码
https://gitee.com/kevinliu_CQ/ansible/tree/master/MySQL-5.7.28-Master-slave-Playbook
4. 下载mysql 5.7.28 bin 文件，因为git上能上传这么大的文件，放到百度盘里面了，下载以后把mysql.zip放如到roles/common/files/mysql.zip
下载地址
链接：https://pan.baidu.com/s/1WCgOQRQFnz7rh4UdBI4i7g
提取码：it8k
[root@vm10-4-0-57 MySQL-5.7.28-Master-slave-Playbook]# ls -ltr roles/common/f
iles/mysql.zip
-rw-r--r-- 1 root root 824374085 Feb 15 19:55 roles/common/files/mysql.zip
5. 编辑目录中的vars变量和host文件，改成符合自己的。
#vi vars.yml
### 基础环境
user: mysql
mysql_port: 3306
pack_home: /data
basedir: "{{pack_home}}/mysql"
datadir: "{{pack_home}}/mysql-data"
logdir: "{{ basedir }}/logs"
rundir: "{{basedir}}/run"
### MySQL root user password
root_password: Passw0rd^123
### MySQL Socket
mysql_socket: "{{ basedir }}/run/mysql.sock"
### MySQL rep user password
rep_user: replication
rep_password: Replication^123
### MySQL remote user wduser password
myuser_user: mysqlremoteuser
myuser_password: mysqlremoteuser_password
#vi hosts
[master]
10.4.0.17
[slave]
10.4.0.22
[slave:vars]
master_host_ip=10.4.0.17
6. 运行playbook ,执行安装主从
ansible-playbook -i hosts mysql_cluster.yaml -e"@vars.yml"
[root@vm10-4-0-57 MySQL-5.7.28-Master-slave-Playbook]# ansible-playbook -i hosts mysql_cluster.yaml -e"@vars.yml"
PLAY [master,slave] ************************************************************************************************************************
TASK [Gathering Facts] *********************************************************************************************************************
ok: [10.4.0.22]
ok: [10.4.0.17]
TASK [common : yum python-pip] *************************************************************************************************************
ok: [10.4.0.22]
ok: [10.4.0.17]
TASK [common : Create mysql group] *********************************************************************************************************
ok: [10.4.0.22]
ok: [10.4.0.17]
TASK [common : Create mysql user] **********************************************************************************************************
ok: [10.4.0.22]
ok: [10.4.0.17]
TASK [common : Copy MySQL Package] *********************************************************************************************************
ok: [10.4.0.22]
ok: [10.4.0.17]
TASK [common : Unpacking package] **********************************************************************************************************
changed: [10.4.0.22]
changed: [10.4.0.17]
TASK [common : Create data dir] ************************************************************************************************************
ok: [10.4.0.17]
ok: [10.4.0.22]
TASK [common : Create logs dir] ************************************************************************************************************
ok: [10.4.0.22]
ok: [10.4.0.17]
TASK [common : Create error file] **********************************************************************************************************
changed: [10.4.0.17]
changed: [10.4.0.22]
TASK [common : delete data dir] ************************************************************************************************************
changed: [10.4.0.17]
changed: [10.4.0.22]
TASK [common : create data dir] ************************************************************************************************************
changed: [10.4.0.17]
changed: [10.4.0.22]
TASK [common : Copy MySQL configure file] **************************************************************************************************
ok: [10.4.0.22]
ok: [10.4.0.17]
TASK [common : Initialize the MySQL] *******************************************************************************************************
changed: [10.4.0.17]
changed: [10.4.0.22]
TASK [common : Execution environment variable] *********************************************************************************************
ok: [10.4.0.22]
ok: [10.4.0.17]
TASK [common : Copy MySQL start file] ******************************************************************************************************
ok: [10.4.0.17]
ok: [10.4.0.22]
TASK [common : create run dir] *************************************************************************************************************
ok: [10.4.0.22]
ok: [10.4.0.17]
TASK [common : Stop MySQL if it is running] ************************************************************************************************
changed: [10.4.0.22]
changed: [10.4.0.17]
TASK [common : start MySQL] ****************************************************************************************************************
changed: [10.4.0.22]
changed: [10.4.0.17]
TASK [common : Get Intial Password] ********************************************************************************************************
changed: [10.4.0.17]
changed: [10.4.0.22]
TASK [common : Change Password] ************************************************************************************************************
changed: [10.4.0.22]
changed: [10.4.0.17]
PLAY [master,] *****************************************************************************************************************************
TASK [Gathering Facts] *********************************************************************************************************************
ok: [10.4.0.17]
TASK [master : Create account for replication] *********************************************************************************************
changed: [10.4.0.17]
TASK [master : create business user:{{myuser}} which also have admin privileges] ***********************************************************
changed: [10.4.0.17]
TASK [master : Get Mysql-master Status] ****************************************************************************************************
ok: [10.4.0.17]
PLAY [slave] *******************************************************************************************************************************
TASK [Gathering Facts] *********************************************************************************************************************
ok: [10.4.0.22]
TASK [slave : Get Master IP] ***************************************************************************************************************
ok: [10.4.0.22]
TASK [slave : SET 2] ***********************************************************************************************************************
ok: [10.4.0.22]
TASK [slave : show] ************************************************************************************************************************
ok: [10.4.0.22] => {
"info_temp['Position']": "1479"
}
TASK [slave : Configure replication on the slave.] *****************************************************************************************
changed: [10.4.0.22]
TASK [slave : Start slave] *****************************************************************************************************************
changed: [10.4.0.22]
TASK [slave : Get Slave] *******************************************************************************************************************
ok: [10.4.0.22]
TASK [slave : Slave_IO_Running] ************************************************************************************************************
ok: [10.4.0.22] => {
"msg": "Slave_IO_Running Yes"
}
TASK [slave : Slave_SQL_Running] ***********************************************************************************************************
ok: [10.4.0.22] => {
"msg": "Slave_SQL_Running Yes"
}
PLAY RECAP *********************************************************************************************************************************
10.4.0.17 : ok=24 changed=11 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
10.4.0.22 : ok=29 changed=11 unreachable=0 failed=0 skipped=0 rescued=0 ignored=0
7. 验证主从状态，登陆到slave主机，可以看到主从同步成功了。
mysql > show slave status \G;
[root@vm10-4-0-22 ~]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 13
Server version: 5.7.28-log MySQL Community Server (GPL)
Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> show slave status \G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 10.4.0.17
Master_User: replication
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000003
Read_Master_Log_Pos: 1788
Relay_Log_File: vm10-4-0-22-relay-bin.000002
Relay_Log_Pos: 629
Relay_Master_Log_File: mysql-bin.000003
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 1788
Relay_Log_Space: 842
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 17
Master_UUID: cadee0fa-500c-11ea-9416-fa163e47d46c
Master_Info_File: /data/mysql-data/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec)
ERROR:
No query specified
mysql>
作者：一直学下去