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mysql主从复制--一主一从[ mysql数据库 ]

mysql数据库时间：2024-12-24 19:12:57

作者：文/会员上传

如何提高mysql查询效率

简介：

1、启动实例3306和3307

2、检查主库配置
[root@client 3306]# egrep "log-bin|server|sock" my.cnf
socket = /data/3306/mysql.sock
socket = /application/mysql-5.5.32/

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1、启动实例3306和3307

2、检查主库配置
[root@client 3306]# egrep "log-bin|server|sock" my.cnf
socket = /data/3306/mysql.sock
socket = /application/mysql-5.5.32/tmp/mysql.sock
#socket = /data/3306/mysql.sock
log-bin = /data/3306/mysql-bin
server-id = 1

查看配置是否生效
[root@client 3306]# mysql -S /application/mysql-5.5.32/tmp/mysql.sock -e "show variables like 'log_bin'"
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| log_bin | ON |
+---------------+-------+

3、检查从库配置
[root@client 3307]# egrep "log-bin|server|sock" my.cnf
socket = /data/3306/mysql.sock
socket = /application/mysql-5.5.32/tmp/mysql.sock
#socket = /data/3306/mysql.sock
log-bin = /data/3306/mysql-bin
server-id = 1

4、主库配置

mysql>grant replication slave on *.* to 'rep'@'%' identified by 'oldboy123'

mysql>flush privileges

mysql>flush table with read lock

mysql> show master status;

mysqldump -S /application/mysql-5.5.32/tmp/mysql.sock -A -B --events --master-data=2 > /tmp/rep1.sql

mysql>unlock tables

5、恢复从库
mysql -S /data/3307/mysql.sock < /tmp/rep1.sql

cat |mysql -S /data/3307/mysql.sock << EOF
CHANGE MASTER TO
MASTER_HOST='192.168.12.200',
MASTER_PORT=3306,-------------------------------注意不要用引号
MASTER_USER='rep',
MASTER_PASSWORD='oldboy123',
MASTER_LOG_FILE='mysql-bin.000016',
MASTER_LOG_POS=421;--------------------------注意不要用引号
EOF

mysql> start slave;

mysql> show slave status \G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.12.200
Master_User: rep
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000016
Read_Master_Log_Pos: 421
Relay_Log_File: relay-bin.000002
Relay_Log_Pos: 253
Relay_Master_Log_File: mysql-bin.000016
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB: mysql
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: 421
Relay_Log_Space: 403
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