MySQL主从复制配置文档-亲试ok
安装的数据是mysql5.7社区版本，yum安装,官网有下载地址
wget https://repo.mysql.com//mysql57-community-release-el7-10.noarch.rpm
注意事项: 防火墙,命令引号.
主服务器
[root@localhost opt]# egrep -v "^$|#" /etc/my.cnf 红色部分为添加
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
symbolic-links=0
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
server-id=1
log-bin=mysql-bin
登陆数据库
[root@localhost opt]# systemctl start mysqld.service
[root@localhost opt]# grep 'temporary password' /var/log/mysqld.log #查看临时密码
[root@localhost opt]# mysql -uroot -p
修改root密码
mysql>set global validate_password_policy=0; #取消复杂密码设置
mysql>alter user 'root'@'localhost' identified by '123';
开始创建用户
mysql>GRANT REPLICATION SLAVE ON *.* TO 'repl'@'192.168.1.%' IDENTIFIED BY 'admin123456';
查看master日志
mysql>SHOW MASTER STATUS;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000001 | 154 | | | |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
从库配置
[root@localhost ~]# egrep -v "^$|#" /etc/my.cnf
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
symbolic-links=0
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
server-id=2
登陆从库
mysql>CHANGE MASTER TO
MASTER_HOST='192.168.x.xxx',
MASTER_PORT=xxxx,
MASTER_USER='repl',
MASTER_PASSWORD='xxxxxx',
MASTER_LOG_FILE='mysql-bin.000001', 主库的二进制日志
MASTER_LOG_POS=154; 主库的二进制日志的位置
启动
mysql>start slave;
mysql>stop slave;
查看是否连接成功. 红色部分一定要为yes.
mysql> show slave status \G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.200
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000001
Read_Master_Log_Pos: 316
Relay_Log_File: localhost-relay-bin.000002
Relay_Log_Pos: 482
Relay_Master_Log_File: mysql-bin.000001
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: 316
Relay_Log_Space: 693
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: 200
Master_UUID: 706337e4-1ebb-11e7-a606-000c2987fd49
Master_Info_File: /var/lib/mysql/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)
mysql> Change master to
-> Master_host='192.168.7.195',
-> Master_port=3309,
-> Master_user='root',
-> Master_password='beijing',
-> Master_log_file='log-bin',
-> Master_log_pos=154;
Query OK, 0 rows affected, 2 warnings (0.05 sec)
