4.1 環境介紹
4.1.1 Master環境介紹
1)操作系統:centos7
2)Mysql版本:5.7.23
3)IP:10.0.0.61
4.1.2 Slave環境介紹:
1)操作系統:centos7
2)Mysql版本:5.7.23
3)IP:10.0.0.62
4.2 配置
4.2.1 Master配置
1)my.cnf配置
#vim /etc/my.cnf
[root@ok_1 ~]# vim /etc/my.cnf
symbolic-links=0
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
log-bin=mysql-bin #[必須]啓用二進制日誌
server-id=61 #[必須]服務器唯一ID,默認是1,一般取IP最後一段
2)重啓mysql
[root@ok_1 ~]# systemctl restart mysqld
3)在主服務器上建立帳戶並授權slave
[root@ok_1 ~]# mysql -uroot -p123456
mysql> set global validate_password_policy=0;
Query OK, 0 rows affected (0.00 sec)
mysql> set global validate_password_length=1;
Query OK, 0 rows affected (0.00 sec)
這裏要寫這兩句畫的原因是mysql5.7不允許寫簡單密碼,所以這裏要通過命令更改mysql配置文件使其支持簡單密碼。
mysql> GRANT REPLICATION SLAVE ON *.* to 'mysqlsync'@'%' identified by '123456';
Query OK, 0 rows affected, 1 warning (0.00 sec)
//這裏
//這裏也不用寫Slave端的用戶名,因爲這裏的mysql用戶名是專門用來做複製的!
//一般不用root帳號,“%”表示所有客戶端都可能連,只要帳號,密碼正確,此處可用具體客戶端IP代替,如192.168.245.139,加強安全。
//"mysqlsync"也不用寫Slave端的用戶名,因爲這裏是mysql專門用來做複製的!
4) 登錄mysql,查詢master的狀態
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000001 | 434 | | | |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.01 sec)
注:執行完此步驟後不要再操作主服務器MYSQL,防止主服務器狀態值變化。
4.2.2 Slave配置
1)my.cnf配置
[root@0k_2 ~]# vim /etc/my.cnf
symbolic-links=0
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
log-bin=mysql-bin #[必須]啓用二進制日誌
server-id=62 #[必須]服務器唯一ID,默認是1,一般取IP最後一段
2)重啓mysql
[root@0k_2 ~]# systemctl restart mysqld
3)配置從服務器Slave:
[root@0k_2 ~]# mysql -uroot -p123456
mysql> change master to master_host='10.0.0.61',master_user='mysqlsync',master_password='123456',master_log_file='mysql-bin.000001',master_log_pos=434;
Query OK, 0 rows affected, 2 warnings (0.00 sec)
//注意不要斷開,“434”無單引號,master_host的地址一定不能寫錯!
mysql> start slave; #啓動從服務器複製功能
Query OK, 0 rows affected (0.00 sec)
- 檢查從服務器複製功能狀態:
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 10.0.0.61
Master_User: mysqlsync
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000001
Read_Master_Log_Pos: 434
Relay_Log_File: 0k_2-relay-bin.000002
Relay_Log_Pos: 320
Relay_Master_Log_File: mysql-bin.000001
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: 434
Relay_Log_Space: 526
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: 61
Master_UUID: 91df0025-134c-11e9-8264-000c2921ff55
Master_Info_File: /var/lib/mysql/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)
特別注意:Slave_IO及Slave_SQL進程必須正常運行,即YES狀態,否則都是錯誤的狀態。
5)開始驗證
(1)初始狀態
(2)新建test表
(3)驗證結果
成功!!