mysql 主从复制
2018-10-15 本文已影响0人
iwhao
基础信息
主: 192.168.0.1
从: 192.168.0.2
备份
复制 两台服务器的/etc/mysql/mysql.conf.d/mysqld.cnf 到 /etc/mysql/mysql.conf.d/mysqld.cnf.bak 便于数据恢复
主服务器配置
mysqld.cnf
# bind-address = 127.0.0.1
server-id = 1
log_bin = /var/log/mysql/mysql-bin.log
注释掉bind-address到127.0.0.1，允许远程连接，打开server-id和log二进制文件的注释
设置好 记得重启 mysql服务
centos服务器
service mysqld restart
ubuntu服务器
service mysql restart
创建从库的登录用户，并且授予slave权限
mysql> grant replication slave on *.* to 'iwhao'@'192.168.0.2' identified by '123456';
刷新权限
mysql> FLUSH PRIVILEGES;
mysql> show master status;
获取mysql-bin的file信息和position信息 例如： mysql-bin.000030 154
从服务器配置
server-id = 2
// 默认不配置的话 是 复制全部 以下配置为 只复制 buildings单库
replicate-do-db=buildings
设置好 记得重启 mysql服务
centos
service mysqld restart
ubuntu
service mysql restart
mysql-bin的值和master_log_pos值 在主服务器中查看 myqsl 中执行 show master status;
change master to master_host='192.168.0.1', master_user='iwhao', master_password='123456', master_log_file='mysql-bin.000030', master_log_pos=154;
mysql> show slave status \G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.0.1
Master_User: iwhao
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000030
Read_Master_Log_Pos: 154
Relay_Log_File: relay-bin.000002
Relay_Log_Pos: 320
Relay_Master_Log_File: mysql-bin.000030
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB: buildings
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: 154
Relay_Log_Space: 521
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: 1
Master_UUID: 5f51ec81-7c33-11e8-80f0-00163e06250b
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)
Slave_IO_Running 和 Slave_SQL_Running 值 都为 Yes 说明就成功了
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