1.Mysql主從配置環境信息
Master：192.168.231.128
Slave：192.168.231.129
2.Matser配置
①編輯配置文件/etc/my.cnf
修改my.cnf，增加server-id=128和log_bin=test_01,隨後重新啓動mysql服務
[mysqld] datadir=/data/mysql socket=/tmp/mysql.sock server-id=128 log_bin=test_01 # Disabling symbolic-links is recommended to prevent assorted security risks symbolic-links=0 # Settings user and group are ignored when systemd is used. # If you need to run mysqld under a different user or group, # customize your systemd unit file for mariadb according to the # instructions in http://fedoraproject.org/wiki/Systemd [mysqld_safe] #log-error=/var/log/mariadb/mariadb.log #pid-file=/var/run/mariadb/mariadb.pid # # include all files from the config directory # #!includedir /etc/my.cnf.d [root@test_01 ~]# /etc/init.d/mysqld restart Shutting down MySQL... SUCCESS! Starting MySQL. SUCCESS!
②創建同步用戶，並且將表暫時鎖定不允許再寫入
mysql> grant replication slave on *.* to 'replicate'@'192.168.231.129' identified by 'P@ssw0rd'; Query OK, 0 rows affected (0.00 sec) mysql> flush tables with read lock; Query OK, 0 rows affected (0.01 sec)
③查看master的狀態信息
此狀態顯示了master的bin_log文件名以及當前所處的位置
mysql> show master status -> ; +----------------+----------+--------------+------------------+-------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set | +----------------+----------+--------------+------------------+-------------------+ | test_01.000002 | 653120 | | | | +----------------+----------+--------------+------------------+-------------------+ 1 row in set (0.00 sec)
④將當前所有數據庫做備份
[root@test_01 mysql]# ls auto.cnf ib_logfile0 mysql test test_01.000002 test_01.index wennan ibdata1 ib_logfile1 performance_schema test_01.000001 test_01.err test_01.pid [root@test_01 mysql]# ls .tmp ls: 無法訪問.tmp: 沒有那個文件或目錄 [root@test_01 mysql]# ls /tmp mysql.sock mysql.sql systemd-private-e3f448a092a245e78ad7f85feac7cd9a-vmtoolsd.service-hIsgS1 [root@test_01 mysql]# mysqldump -uroot -pP@ssw0rd test > /tmp/test.sql Warning: Using a password on the command line interface can be insecure. [root@test_01 mysql]# mysqldump -uroot -pP@ssw0rd wennan > /tmp/wennan.sql Warning: Using a password on the command line interface can be insecure. [root@test_01 mysql]# ls /tmp mysql.sock mysql.sql systemd-private-e3f448a092a245e78ad7f85feac7cd9a-vmtoolsd.service-hIsgS1 test.sql wennan.sql
3.Slave配置
①編輯配置文件/etc/my.cnf添加server-id=129,隨後重新啓動mysqld服務
[root@test_01 mysql]# ls auto.cnf ib_logfile0 mysql test test_01.000002 test_01.index wennan ibdata1 ib_logfile1 performance_schema test_01.000001 test_01.err test_01.pid [root@test_01 mysql]# ls .tmp ls: 無法訪問.tmp: 沒有那個文件或目錄 [root@test_01 mysql]# ls /tmp mysql.sock mysql.sql systemd-private-e3f448a092a245e78ad7f85feac7cd9a-vmtoolsd.service-hIsgS1 [root@test_01 mysql]# mysqldump -uroot -pP@ssw0rd test > /tmp/test.sql Warning: Using a password on the command line interface can be insecure. [root@test_01 mysql]# mysqldump -uroot -pP@ssw0rd wennan > /tmp/wennan.sql Warning: Using a password on the command line interface can be insecure. [root@test_01 mysql]# ls /tmp mysql.sock mysql.sql systemd-private-e3f448a092a245e78ad7f85feac7cd9a-vmtoolsd.service-hIsgS1 test.sql wennan.sql [root@test_02 ~]# /etc/init.d/mysqld restart Shutting down MySQL.. SUCCESS! Starting MySQL. SUCCESS!
②將Master上備份好的數據庫備份文件拷貝至Slave
[root@test_02 ~]# scp 192.168.231.128:/tmp/*.sql /tmp The authenticity of host '192.168.231.128 (192.168.231.128)' can't be established. ECDSA key fingerprint is b2:0d:32:2b:8f:40:2e:c2:2d:ab:6d:f0:2c:6b:2d:9a. Are you sure you want to continue connecting (yes/no)? y Please type 'yes' or 'no': yes Warning: Permanently added '192.168.231.128' (ECDSA) to the list of known hosts. [email protected]'s password: 100% 637KB 636.7KB/s 00:00 test.sql 100% 1258 1.2KB/s 00:00 wennan.sql
③將數據庫備份文件恢復至對應的數據庫
[root@test_02 ~]# mysql -uroot -pP@ssw0rd wennan < /tmp/wennan.sql Warning: Using a password on the command line interface can be insecure. [root@test_02 ~]# mysql -uroot -pP@ssw0rd test < /tmp/test.sql Warning: Using a password on the command line interface can be insecure.
④登錄數據庫，停止slave後修改slave參數
mysql>stop slave; mysql>change master to master_host='192.168.231.128', master_user='replicate', master_password='P@ssw0rd', master_log_file='test_01.000002', master_log_pos=653120,
⑤重新開啓slave，查看slave狀態
mysql> start slave; mysql> show slave stauts\G ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'stauts' at line 1 mysql> show slave status\G *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.231.128 Master_User: replicate Master_Port: 3306 Connect_Retry: 60 Master_Log_File: test_01.000002 Read_Master_Log_Pos: 653120 Relay_Log_File: test_02-relay-bin.000002 Relay_Log_Pos: 281 Relay_Master_Log_File: test_01.000002 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: 653120 Relay_Log_Space: 456 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: 128 Master_UUID: 40078eac-e0ed-11e7-92e6-000c296b046f Master_Info_File: /data/mysql/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)
⑥測試主從同步
在master創建表test1
mysql> create table test1(`id` int(4), `name` char(40)); Query OK, 0 rows affected (0.39 sec) mysql> select count(*) test1; +-------+ | test1 | +-------+ | 1 | +-------+ 1 row in set (0.00 sec)
slave查看錶test1信息，確認一致
mysql> select count(*) test1; +-------+ | test1 | +-------+ | 1 | +-------+ 1 row in set (0.00 sec)