How to create a slave library in Mysql database
Today, I will talk to you about how to create a slave database in the Mysql database, many people may not know much about it. In order to make you understand better, the editor has summarized the following content for you. I hope you can get something according to this article.
First, refer to http://blog.itpub.net/28536251/viewspace-2138854/ to install Mysql on two nodes.
1. Install the backup software from the master library
[root@D2-wetestdb160 ~] # yum install-y perl-DBD-MySQL perl-DBI perl-Time-HiRes
[root@D2-wetestdb160] # rpm-ivh libev-4.15-6.el7.x86_64.rpm percona-xtrabackup-24-2.4.5-1.el7.x86_64.rpm
2. The main database backs up the database.
[root@D2-wetestdb160 ~] # mkdir / data/backup
[root@D2-wetestdb160] # innobackupex-- user=root-- password=123456 / data/backup
[root@D2-wetestdb160] # tar-cvzf mysqlbackup84106_0113.tar.gz / data/backup/2017-01-13 11-17-22 /
[root@D2-wetestdb160 ~] # scp mysqlbackup84106_0113.tar.gz root@10.163.89.245:/root
3. Restore from the library
[root@D2-stone245] # tar-xvzf mysqlbackup84106_0113.tar.gz-C / var/lib/mysql
[root@D2-stone245] # innobackupex-- apply-log / var/lib/mysql/data/backup/2017-01-13 11-17-22 /
[root@D2-stone245] # chown-R mysql:mysql / var/lib/mysql/data/backup/2017-01-13 11-17-22
4. Modify the configuration file from the library
[root@D2-stone245 ~] # / etc/init.d/mysqld stop
[root@D2-stone245 ~] # vim / etc/my.cnf
[mysqld]
Datadir=/var/lib/mysql/data/backup/2017-01-13 11-17-22 /
Server-id=89254
[root@D2-stone245 ~] # / etc/init.d/mysql.server start
5. Copy from library configuration
[root@D2-stone245] # cat / var/lib/mysql/data/backup/2017-01-13 11-17-22/xtrabackup_binlog_info
Mysql-bin.000010 100927559
Mysql > CHANGE MASTER TO MASTER_HOST='10.163.84.160',MASTER_PORT=3306,MASTER_USER='repl',MASTER_PASSWORD='replsafe',MASTER_LOG_FILE='mysql-bin.000010',MASTER_LOG_POS=100927559
Query OK, 0 rows affected, 2 warnings (0.01 sec)
Mysql > start slave
Query OK, 0 rows affected (0.00 sec)
Mysql > set global read_only=1
Query OK, 0 rows affected (0.00 sec)
Mysql > show global variables like "read_only%"
+-+ +
| | Variable_name | Value |
+-+ +
| | innodb_read_only | OFF |
| | read_only | ON |
| | super_read_only | OFF |
| | tx_read_only | OFF |
+-+ +
4 rows in set (0.01sec)
Mysql > show slave status\ G
* * 1. Row *
Slave_IO_State: Waiting for master to send event
Master_Host: 10.163.84.160
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000011
Read_Master_Log_Pos: 1719
Relay_Log_File: D2-stone245-relay-bin.000003
Relay_Log_Pos: 1932
Relay_Master_Log_File: mysql-bin.000011
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: 1719
Relay_Log_Space: 6430
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: 1016384160
Master_UUID: 9ee791f2-ad84-11e6-932d-0050568a6255
Master_Info_File: / var/lib/mysql/data/backup/2017-01-13 11-17-22/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)
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