Mysql数据库和ANSIBLE运维自动化

1、主从复制及主主复制的实现

 环境说明:

 2台云主机:

CentOS Linux release 8.0.1905 (Core)

10.100.11.57      主服务器

10.100.10.208    备服务器

mysql  Ver 15.1 Distrib 10.3.28-MariaDB, for Linux (x86_64) using readline 5.1

[root@10-100-11-57 ~]# dnf -y install mariadb-server 

[root@10-100-11-57 ~]# grep -v '^#' /etc/my.cnf.d/mariadb-server.cnf

[server]

[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
log-error=/var/log/mariadb/mariadb.log
pid-file=/run/mariadb/mariadb.pid
server-id=8
log-bin

[galera]

[embedded]

[mariadb]

[mariadb-10.3]

 

 

 

 [root@10-100-11-57 ~]# systemctl restart mariadb

[root@10-100-11-57 ~]# mysql
Welcome to the MariaDB monitor. Commands end with ; or \g.
Your MariaDB connection id is 10
Server version: 10.3.28-MariaDB-log MariaDB Server

Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

MariaDB [(none)]> show master logs;
+--------------------+-----------+
| Log_name | File_size |
+--------------------+-----------+
| mariadb-bin.000001 | 28255 |
| mariadb-bin.000002 | 546 |
+--------------------+-----------+
2 rows in set (0.000 sec)

#创建复制用户

MariaDB [(none)]> grant replication slave on *.* to repluser@'10.100.%.%' identified by '123456@';
Query OK, 0 rows affected (0.000 sec)

#从节点10.100.10.208 

[root@10-100-10-208 ~]# vim /etc/my.cnf.d/mariadb-server.cnf 

server-id=18

[root@10-100-10-208 ~]# systemctl restart mariadb

[root@10-100-10-208 ~]# mysql

MariaDB [(none)]> help change master to

MariaDB [(none)]> CHANGE MASTER TO
-> MASTER_HOST='10.100.11.57',
-> MASTER_USER='repluser',
-> MASTER_PASSWORD='123456@',
-> MASTER_PORT=3306,
-> MASTER_LOG_FILE='mariadb-bin.000002',
-> MASTER_LOG_POS=546;
Query OK, 0 rows affected (0.008 sec)

MariaDB [(none)]> start slave;
Query OK, 0 rows affected (0.001 sec)

MariaDB [(none)]> show slave status \G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 10.100.11.57
Master_User: repluser
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mariadb-bin.000002
Read_Master_Log_Pos: 546
Relay_Log_File: mariadb-relay-bin.000002
Relay_Log_Pos: 557
Relay_Master_Log_File: mariadb-bin.000002
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: 546
Relay_Log_Space: 868
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: 8
Master_SSL_Crl:
Master_SSL_Crlpath:
Using_Gtid: No
Gtid_IO_Pos:
Replicate_Do_Domain_Ids:
Replicate_Ignore_Domain_Ids:
Parallel_Mode: conservative
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
Slave_DDL_Groups: 0
Slave_Non_Transactional_Groups: 0
Slave_Transactional_Groups: 0
1 row in set (0.000 sec)

2、xtrabackup实现全量+增量+binlog恢复库

 

 

 

 

3、MyCAT实现MySQL读写分离

 

 

 

 

 

4、ansible常用模块介绍