准备工作
环境
- 两台虚拟机，地址：master-192.168.52.130/slave-192.168.52.131；
- 系统版本：Centos 7；
- 软件版本：mysql 5.6；
数据库
- 同样的配置：端口-3307等；
- 同样的数据：database-TestDB等；
主从配置
主库配置
- 编辑 /etc/my.cnf：
[mysqld]
basedir=/var/lib/mysql
datadir=/var/lib/mysql/data
socket=/var/lib/mysql/mysql.sock
port=3307
log-bin=/var/lib/mysql/mysql-bin.log
explicit_defaults_for_timestamp=true
innodb_flush_log_at_trx_commit=1
sync_binlog=1
server-id=1
binlog-do-db=TestDB
binlog-ignore-db=performance_schema
binlog-ignore-db=mysql
binlog-ignore-db=test
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
# Recommended in standard MySQL setup
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
配置项解释：
server-id=1 标识
binlog-do-db=TestDB 需要同步的数据库
binlog-ignore-db=performance_schema 不需要同步的数据库
- 创建同步用户，在主服务器上为从服务器建立一个连接帐户，该帐户必须授予REPLICAITON SLAVE权限。在主服务器登陆mysql上执行：
grant replication slave on *.* to 'master'@'%' identified by '123456';
- 重启之后，查看状态：
mysql> show master status\G;
*************************** 1. row ***************************
File: mysql-bin.000009
Position: 120
Binlog_Do_DB: TestDB
Binlog_Ignore_DB: performance_schema,mysql,test
Executed_Gtid_Set:
1 row in set (0.01 sec)
注意上面的 File 和 Position ，从库slave 配置的时候会使用。
从库配置
- 编辑 /etc/my.cnf
[mysqld]
...
server_id=2
log-bin=mysql-bin.log
replicate-do-db=TestDB
- change master语句指定同步位置:
mysql>change master to master_host='192.168.52.130', master_user='master', master_password='123456', master_log_file='mysql-bin.000007', master_log_pos=120,master_port=3307;
- 启用/关闭 slave;
start slave;
stop slave;
- 重启，查看slave :show slave status\G;
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.52.130
Master_User: master
Master_Port: 3307
Connect_Retry: 60
Master_Log_File: mysql-bin.000007
Read_Master_Log_Pos: 120
Relay_Log_File: mysqld-relay-bin.000010
Relay_Log_Pos: 283
Relay_Master_Log_File: mysql-bin.000007
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB: TestDB
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: 120
Relay_Log_Space: 620
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: 1cacfa49-04c4-11e7-b744-000c29d5b78c
Master_Info_File: /var/lib/mysql/data/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
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
1 row in set (0.00 sec)
测试
在主库进行数据的操作，查看从库的数据。
