操作系统 Centos 6.4 x86_64
软件版本 mysql 5.5.37
一 主-从复制 （异步）
当主-从服务器都刚完成mysql安装，没有数据
主服务器 192.168.200.127
从服务器 192.168.200.128
1 时间同步
[root@node1 ~]# ntpdate ntp.api.bz
[root@node2 ~]# ntpdate ntp.api.bz
2 配置master
1 修改配置文件
sql_log_bin=onlog_bin=mysql-binserver-id=1innodb_file_per_table=1
2授权复制用户
mysql> grant replication slave on *.* to identified by ;Query OK, 0 rows affected (0.00 sec)mysql> flush privileges;Query OK, 0 rows affected (0.00 sec)
3重启mysql服务
[root@node1 ~]# service mysqld restartShutting down MySQL. SUCCESS! Starting MySQL.. SUCCESS!
3 配置slave
1 修改配置文件
[root@node2 ~]# vim /etc/my.cnf [mysqld]relay_log = relay-logserver-id = 10
2 重启mysql服务
[root@node2 ~]# service mysqld restartShutting down MySQL. SUCCESS! Starting MySQL.. SUCCESS!
3 连接主服务器
主服务器
mysql> show master status;+------------------+----------+--------------+------------------+| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |+------------------+----------+--------------+------------------+| mysql-bin.000002 | 107 | | |+------------------+----------+--------------+------------------+1 row in set (0.00 sec)
从服务器
mysql> change master to master_host='192.168.200.127',master_user='user',master_password='redhat';Query OK, 0 rows affected (0.01 sec)mysql> start slave;mysql> show slave status\G*************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.200.127 Master_User: user Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000002 Read_Master_Log_Pos: 186 Relay_Log_File: relay-log.000003 Relay_Log_Pos: 332 Relay_Master_Log_File: mysql-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: 186 Relay_Log_Space: 857 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: 0Master_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: 11 row set (0.00 sec)
4 主从复制测试
master
mysql> create database db;mysql> show databases;+--------------------+| Database |+--------------------+| information_schema || db || mysql || performance_schema || test |+--------------------+5 rows in set (0.00 sec
slave
mysql> show databases;+--------------------+| Database |+--------------------+| information_schema || db || mysql || performance_schema || test |+--------------------+5 rows in set (0.00 sec)
二 当主服务器已有数据
1 master 备份
[root@node1 ~]# mysqldump -uroot --all-databases --lock-all-table --master-data=2 --events > all.sql
2 复制sql文件至从服务器
[root@node1 ~]# scp all.sql 192.168.200.128:/tmp/
3 salve 恢复
mysql> source /tmp/all.sql
4 查看备份二进制文件位置
[root@node1 ~]# less all.sql -- CHANGE MASTER TO MASTER_LOG_FILE=, MASTER_LOG_POS=809;
5 复制
mysql> change master to master_host='192.168.200.127',master_user='user',master_password='redhat',master_log_file='mysql-bin.000002,master_log_pos=809;mysql> start slave;mysql> show slave status\G*************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.200.127 Master_User: user Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000002 Read_Master_Log_Pos: 809 Relay_Log_File: relay-log.000002 Relay_Log_Pos: 253 Relay_Master_Log_File: mysql-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: 809 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: 0Master_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: 11 row set (0.00 sec)
三 半同步复制
1 安装插件
mysql> INSTALL PLUGIN rpl_semi_sync_master SONAME 'semisync_slave.so' ;mysql> SET GLOBAL rpl_semi_sync_master_enabled = 1; mysql> SET GLOBAL rpl_semi_sync_master_timeout = 2000;
2 修改配置文件
[root@node1 ~]# vim /etc/my.cnf rpl_semi_sync_master_enabled = 1rpl_semi_sync_master_timeout = 2000
3 重启服务
[root@node1 ~]# service mysqld restartShutting down MySQL. SUCCESS! Starting MySQL.. SUCCESS!
slave
1安装插件
mysql> INSTALL PLUGIN rpl_semi_sync_slave SONAME ;mysql> SET GLOBAL rpl_semi_sync_slave_enabled = 1; mysql> STOP SLAVE IO_THREAD;mysql> START SLAVE IO_THREAD;
2修改配置文件
[root@node2 mysql]# vim /etc/my.cnfrpl_semi_sync_slave_enabled = 1
3 重启服务
[root@node2 mysql]# service mysqld restartShutting down MySQL. SUCCESS! Starting MySQL.. SUCCESS!
4 查看状态
master
mysql> show global status like 'rep_semi%';+--------------------------------------------+-------+| Variable_name | Value |+--------------------------------------------+-------+| Rpl_semi_sync_master_clients | 1 || Rpl_semi_sync_master_net_avg_wait_time | 0 || Rpl_semi_sync_master_net_wait_time | 0 || Rpl_semi_sync_master_net_waits | 0 || Rpl_semi_sync_master_no_times | 0 || Rpl_semi_sync_master_no_tx | 0 || Rpl_semi_sync_master_status | ON || Rpl_semi_sync_master_timefunc_failures | 0 || Rpl_semi_sync_master_tx_avg_wait_time | 0 || Rpl_semi_sync_master_tx_wait_time | 0 || Rpl_semi_sync_master_tx_waits | 0 || Rpl_semi_sync_master_wait_pos_backtraverse | 0 || Rpl_semi_sync_master_wait_sessions | 0 || Rpl_semi_sync_master_yes_tx | 0 |+--------------------------------------------+-------+14 rows in set (0.00 sec)
slave
mysql> show global status like 'rpl_semi%' ;+----------------------------+-------+| Variable_name | Value |+----------------------------+-------+| Rpl_semi_sync_slave_status | ON |+----------------------------+-------+1 row in set (0.00 sec)
半同步复制完成