mysql运营_为线上运营Mysql数据库设置从库

一、为mysql运营主库添加一个repl 账号

[root@zabbix_server ~]# mysql -uroot -p -S /var/lib/mysql/mysql.sock

Enter password:

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connectionid is 15778982Server version:5.7.25MySQL Community Server (GPL)

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 clearthe current input statement.

mysql>

mysql> grant replication slave,replication client on *.* to 'repl'@'%' identified by 'xxxxxxxxxx';

二、修改主库my.cnf

增加以下字段

server_id=IP+PORT 标识服务器ID

log-bin=master-221 设置log_bin日志文件名

binlog_format=row 指定日志格式为row

server_id=693306log-bin=master-18-69binlog_format=row

三、重启主库mysql

停止mysql实例

[root@server-1 ~]# mysqladmin -uroot -p -S /home/mysql-5.7.26/mysql.sock shutdown

重启mysql实例

[root@server-1 ~]# mysqld_safe --defaults-file=/etc/mysql/my.cnf &

进入mysql

[root@server-1 ~]# mysql -uroot -p -S /home/mysql-5.7.26/mysql.sock

Enter password:

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connectionid is 4Server version:5.7.26-log Source distribution

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 clearthe current input statement.

mysql>

查看server_id变量

mysql> show variables like '%servier_id%';

Empty set (0.01sec)

mysql> show variables like '%server_id%';+----------------+--------+

| Variable_name | Value |

+----------------+--------+

| server_id | 693306 |

| server_id_bits | 32 |

+----------------+--------+

2 rows in set (0.01sec)

mysql>

已经看到server_id变量已经成功设置。

四、修改从库my.cnf

添加server_id=IP+PORT

server_id=713306

五、重启mysql

[root@localhost mysql]# systemctl restart mysqld

[root@localhost mysql]#

进入mysql,查看server_id变量

[root@localhost data]# mysql -uroot -p -S /home/mysql-5.7.26/mysql.sock

Enter password:

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connectionid is 2Server version:5.7.26MySQL Community Server (GPL)

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 clearthe current input statement.

mysql> show variables like '%server_id%';+----------------+--------+

| Variable_name | Value |

+----------------+--------+

| server_id | 713306 |

| server_id_bits | 32 |

+----------------+--------+

2 rows in set (0.01sec)

mysql>

已经变成我们设置值了，

六、接下来执行从库命令

mysql>change master to-> master_host='172.28.18.69',-> master_port=3306,-> master_user='repl',-> master_password='Zaq1xsw@',-> master_log_file='master-18-69.000001',-> master_log_pos=419;

Query OK,0 rows affected, 2 warnings (0.10sec)

mysql>

这里的 master_log_file和master_log_pos值，我们可以在主库上运行如下命令得到

mysql>show master status\G;*************************** 1. row ***************************File: master-18-69.000001Position:419Binlog_Do_DB:

Binlog_Ignore_DB:

Executed_Gtid_Set: d24d8a53-880d-11e9-b1f3-842b2b5cdc15:1-7,

ee3e292b-866b-11e9-9df8-14feb5dc2c77:1-23

1 row in set (0.00sec)

ERROR:

No query specified

mysql>

执行成功后，我们启动从库操作

mysql>start slave;

Query OK,0 rows affected (0.00sec)

mysql>

查询从库状态

mysql>show slave status\G;*************************** 1. row ***************************Slave_IO_State: Waitingformaster to send event

Master_Host:172.28.18.69Master_User: repl

Master_Port:3306Connect_Retry:60Master_Log_File: master-18-69.000001Read_Master_Log_Pos:1593Relay_Log_File: localhost-relay-bin.000002Relay_Log_Pos:1497Relay_Master_Log_File: master-18-69.000001Slave_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:0Last_Error:

Skip_Counter:0Exec_Master_Log_Pos:1593Relay_Log_Space:1708Until_Condition: None

Until_Log_File:

Until_Log_Pos:0Master_SSL_Allowed: No

Master_SSL_CA_File: