mysql主从复制
Master主服务器IP:192.168.1.202Slave从服务器IP:192.168.1.203
Master配置
设置server-id、启用bin-log二进制日志
vim /etc/my.cnf
log_bin = master_bin
server-id = 1
innodb_file_per_table = ON
skip_name_resolve = ON
添加slave账户授权访问
mysql> grant replication slave,replication client on *.* to 'repluser'@'192.168.1.%' identified by '123123';
Query OK, 0 rows affected (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
Slave配置
设置server-id、启用relay-log中继日志
vim /etc/my.cnf
relay-log = relay_log #中继日志
server-id = 3
innodb_file_per_table = ON
skip_name_resolve = ON
重启master、slave服务service mysqld restart
复制操作
在Master查看bin-log日志文件及位置
mysql> show master logs;
+-------------------+-----------+
| Log_name | File_size |
+-------------------+-----------+
| master_bin.000001 | 120 |
+-------------------+-----------+
1 row in set (0.00 sec)
mysql> show master status;
+-------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+-------------------+----------+--------------+------------------+-------------------+
| master_bin.000001 | 525 | | | |
+-------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
在slave中向master服务器建立复制链接，MASTER_LOG_POS=0;表示从第一行位置开始复制。
在slave中建立授权访问
mysql> CHANGE MASTER TO MASTER_HOST='192.168.1.202', -> MASTER_USER='repluser', -> MASTER_PASSWORD='123123', -> MASTER_LOG_FILE='master_bin.000001', -> MASTER_LOG_POS=0;Query OK, 0 rows affected, 2 warnings (0.03 sec)
Mysql>start slave; //启动从服务器复制
mysql> show slave status\G;//从服务器查看复制状态
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.202
Master_User: repluser
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master_bin.000001
Read_Master_Log_Pos: 525
Relay_Log_File: relay_log.000004
Relay_Log_Pos: 689
Relay_Master_Log_File: master_bin.000001
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Slave_IO_Running 、Slave_SQL_Running为Yes,表明slave复制状态正常。
Master，slave同步测试在master中创建sync_db库及test1表，并添加一条记录mysql> create database sync_db;
Query OK, 1 row affected (0.00 sec)
mysql> use sync_db;
Database changed
mysql> create table test1( id int(10));
Query OK, 0 rows affected (0.01 sec)
mysql> insert into test1 values(10);
Query OK, 1 row affected (0.00 sec)
mysql> select * from test1;
+------+
| id |
+------+
| 10 |
+------+
1 row in set (0.00 sec)
mysql> show master status;
+-------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+-------------------+----------+--------------+------------------+-------------------+
| master_bin.000001 | 1048 | | | |
+-------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
Slave中查看数据同步是否一致。
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sync_db |
+--------------------+
4 rows in set (0.00 sec)
mysql> select * from test1;
+------+
| id |
+------+
| 10 |
+------+
1 row in set (0.00 sec)
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.202
Master_User: repluser
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: master_bin.000001
Read_Master_Log_Pos: 1048
Relay_Log_File: relay_log.000004
Relay_Log_Pos: 1212
Relay_Master_Log_File: master_bin.000001
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
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