MySQL MHA高可用方案【三、主從複製】
3.1 db01伺服器上的操作
db01是用作Master，所以需要先在上面建立主從複製的帳號
[[email protected] ~]# mysql -uroot -pchenliang -S /data/3306/mysql.sock
mysql>
mysql> GRANT REPLICATION SLAVE ON *.* TO [email protected]'172.16.1.%' IDENTIFIED BY 'chenliang';
Query OK, 0 rows affected, 1 warning (5.00 sec)
mysql> select user,host,authentication_string from mysql.user where user='rep' and host='172.16.1.%';
+------+------------+-------------------------------------------+
| user | host | authentication_string |
+------+------------+-------------------------------------------+
| rep | 172.16.1.% | *D072DB593E2E7B068E887A452EB1DB3981A5D844 |
+------+------------+-------------------------------------------+
1 row in set (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.02 sec)
3.2 db02伺服器上的操作
db02伺服器是slave1，需要在上面進行change master並開啟slave。
[
[email protected] ~]# mysql -uroot -pchenliang -S /data/3306/mysql.sockmysql>
mysql> change master to master_host='172.16.1.11',master_user='rep',master_password='chenliang',master_auto_position=1;
Query OK, 0 rows affected, 2 warnings (0.40 sec)
mysql> start slave;
Query OK, 0 rows affected (0.12 sec)
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 172.16.1.11
Master_User: rep
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: db01_mysql_bin.000008
Read_Master_Log_Pos: 637
Relay_Log_File: db02_relay_bin.000008
Relay_Log_Pos: 860
Relay_Master_Log_File: db01_mysql_bin.000008
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: 637
Relay_Log_Space: 1329
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: 11
Master_UUID: 3ad8129b-e7b2-11e8-817e-000c296b2e4b
Master_Info_File: mysql.slave_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: 3ad8129b-e7b2-11e8-817e-000c296b2e4b:1-4
Executed_Gtid_Set: 1386976f-e7b8-11e8-b34b-000c29d359de:1-2,
3ad8129b-e7b2-11e8-817e-000c296b2e4b:1-4
Auto_Position: 1
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec)
mysql> select user,host,authentication_string from mysql.user where user='rep' and host='172.16.1.%';
+------+------------+-------------------------------------------+
| user | host | authentication_string |
+------+------------+-------------------------------------------+
| rep | 172.16.1.% | *D072DB593E2E7B068E887A452EB1DB3981A5D844 |
+------+------------+-------------------------------------------+
1 row in set (0.00 sec)
3.3 db03伺服器上的操作
db03伺服器是slave2，需要在上面進行change master並開啟slave。
[[email protected] ~]# mysql -uroot -pchenliang -S /data/3306/mysql.sock
mysql>
mysql> change master to master_host='172.16.1.11',master_user='rep',master_password='chenliang',master_auto_position=1;
Query OK, 0 rows affected, 2 warnings (0.37 sec)
mysql> start slave;
Query OK, 0 rows affected (0.10 sec)
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 172.16.1.11
Master_User: rep
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: db01_mysql_bin.000008
Read_Master_Log_Pos: 637
Relay_Log_File: db03_relay_bin.000008
Relay_Log_Pos: 860
Relay_Master_Log_File: db01_mysql_bin.000008
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: 637
Relay_Log_Space: 1329
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: 11
Master_UUID: 3ad8129b-e7b2-11e8-817e-000c296b2e4b
Master_Info_File: mysql.slave_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: 3ad8129b-e7b2-11e8-817e-000c296b2e4b:1-4
Executed_Gtid_Set: 2d855103-e7ba-11e8-859b-000c29f7a739:1-2,
3ad8129b-e7b2-11e8-817e-000c296b2e4b:1-4
Auto_Position: 1
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec)
mysql> select user,host,authentication_string from mysql.user where user='rep' and host='172.16.1.%';
+------+------------+-------------------------------------------+
| user | host | authentication_string |
+------+------------+-------------------------------------------+
| rep | 172.16.1.% | *D072DB593E2E7B068E887A452EB1DB3981A5D844 |
+------+------------+-------------------------------------------+
1 row in set (0.01 sec)
3.4 db04伺服器上的操作
db04伺服器是slave3，需要在上面進行change master並開啟slave。
[[email protected] ~]# mysql -uroot -pchenliang -S /data/3306/mysql.sock
mysql>
mysql> change master to master_host='172.16.1.11',master_user='rep',master_password='chenliang',master_auto_position=1;
Query OK, 0 rows affected, 2 warnings (0.11 sec)
mysql> start slave;
Query OK, 0 rows affected (0.14 sec)
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 172.16.1.11
Master_User: rep
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: db01_mysql_bin.000008
Read_Master_Log_Pos: 637
Relay_Log_File: db04_relay_bin.000008
Relay_Log_Pos: 860
Relay_Master_Log_File: db01_mysql_bin.000008
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: 637
Relay_Log_Space: 1329
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: 11
Master_UUID: 3ad8129b-e7b2-11e8-817e-000c296b2e4b
Master_Info_File: mysql.slave_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: 3ad8129b-e7b2-11e8-817e-000c296b2e4b:1-4
Executed_Gtid_Set: 3ad8129b-e7b2-11e8-817e-000c296b2e4b:1-4,
8a45f06d-e7bb-11e8-93ac-000c29a2ce6e:1-2
Auto_Position: 1
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec)
mysql> select user,host,authentication_string from mysql.user where user='rep' and host='172.16.1.%';
+------+------------+-------------------------------------------+
| user | host | authentication_string |
+------+------------+-------------------------------------------+
| rep | 172.16.1.% | *D072DB593E2E7B068E887A452EB1DB3981A5D844 |
+------+------------+-------------------------------------------+
1 row in set (0.00 sec)
3.5 主庫上建立資料進行測試
#在主庫（db01）上建立chenliang庫：
mysql> system hostname
db01
mysql> create database chenliang;
Query OK, 1 row affected (0.05 sec)
mysql> show databases like "chenliang";
+----------------------+
| Database (chenliang) |
+----------------------+
| chenliang |
+----------------------+
1 row in set (0.00 sec)
#在從庫上檢查是否有chenliang庫
mysql> system hostname
db02
mysql> show databases like "chenliang";
+----------------------+
| Database (chenliang) |
+----------------------+
| chenliang |
+----------------------+
1 row in set (0.01 sec)
mysql> system hostname
db03
mysql> show databases like "chenliang";
+----------------------+
| Database (chenliang) |
+----------------------+
| chenliang |
+----------------------+
1 row in set (0.01 sec)
mysql> system hostname
db04
mysql> show databases like "chenliang";
+----------------------+
| Database (chenliang) |
+----------------------+
| chenliang |
+----------------------+
1 row in set (0.01 sec)