CentOS7配置MySQL5.7主备

1：主库设置
（1）修改配置文件
vi /etc/my.cnf
[mysqld]
log-bin=master-bin
server-id=1

（2）创建用户
#mysql -u root -pmysql
>create user test identified by 'test';
>grant all privileges on *.* to 'test'@'%' identified by 'test' with grant option;
//赋予主从同步权限
>grant replication slave on *.* to 'test'@'%';
>flush privileges;

2：备库设置
（1）修改配置文件
vi /etc/my.cnf
[mysqld]
server-id=2
read-only=on
relay-log=slave-relay-bin
relay-log-index=slave-relay-bin.index

3：建立主从关系
（1）主
mysql> show master status;
+-------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+-------------------+----------+--------------+------------------+-------------------+
| master-bin.000002 | 154 | | | |
+-------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)

（2）备
mysql>stop slave;

mysql> change master to
master_host='192.168.0.24',
master_port=3306,
master_user='test',
master_password='test',
master_log_file='master-bin.000002',
master_log_pos=154;

mysql> start slave;

mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.0.24
Master_User: test
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master-bin.000002
Read_Master_Log_Pos: 154
Relay_Log_File: slave-relay-bin.000002
Relay_Log_Pos: 321
Relay_Master_Log_File: master-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: 154
Relay_Log_Space: 528
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: a5a4ce13-5f89-11e9-8595-d850e6b87b68
Master_Info_File: /usr/local/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>

4：测试
（1）主-从执行
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'mysql' WITH GRANT OPTION;
FLUSH PRIVILEGES;

（2）创建数据库进行测试