Preparing the Environment
| CPU name |
IP |
System / MySQL version |
Character |
| node3 |
192.168.210.132 |
CentOS7.3/5.5.60 |
Master |
| node2 |
192.168.210.130 |
CentOS7.3/5.5.60 |
slave |
A, master node
1, create a database to be synchronized
mysql> create database zn; mysql> use zn; mysql> create table zn(id int,name varchar(20));
2. Stop the database service
systemctl stop mariadb.service
3, edit my.cnf
[mysqld]
log-bin = bin- MySQL- Master # enable binary logging Server - ID = . 1 # native database ID Flag binlog - do -db = libraries zn # can be copied from the server, the database name need to synchronize the binary binlog -ignore-db = mysql # may not be copied from the server library
4, restart the database service
systemctl restart mariadb.service
5. Create a simultaneous users and authorized
MariaDB [(none)]> grant replication slave on *.* to slave@'%' identified by "123"; MariaDB [(none)]> show master status;
+-------------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+-------------------------+----------+--------------+------------------+
| mysql-bin-master.000001 | 384 | zn | mysql |
+-------------------------+----------+--------------+------------------+
MariaDB [(none)]>
MariaDB [(none)]>
MariaDB [(none)]> show binlog events\G
*************************** 1. row ***************************
Log_name: mysql-bin-master.000001
Pos: 4
Event_type: Format_desc
Server_id: 1
End_log_pos: 245
Info: Server ver: 5.5.60-MariaDB, Binlog ver: 4
*************************** 2. row ***************************
Log_name: mysql-bin-master.000001
Pos: 245
Event_type: Query
Server_id: 1
End_log_pos: 384
Info: grant replication slave on *.* to slave@'%' identified by "123"
2 rows in set (0.00 sec)
6, View binary file
[root@node3 my.cnf.d]# cd /var/lib/mysql/ [root@node3 mysql]# ls[root@node3 mysql]# ls
aria_log.00000001 ibdata1 ib_logfile1 mysql-bin-master.000001 mysql.sock test
aria_log_control ib_logfile0 mysql mysql-bin-master.index performance_schema zn
7, will be synchronized database export, and sent to slave node, before copying to ensure consistent synchronization of database
mysqldump -uroot -p123 zn> zn.sql # can export the database
scp zn.sql 192.168.210.130:/root
Two, slave node
1, two database servers mysql version to be consistent
MariaDB [(none)]> show variables like '%version%'; +-------------------------+----------------------+ | Variable_name | Value | +-------------------------+----------------------+ | innodb_version | 5.5.59-MariaDB-38.11 | | protocol_version | 10 | | slave_type_conversions | | | version | 5.5.60-MariaDB | | version_comment | MariaDB Server | | version_compile_machine | x86_64 | | version_compile_os | Linux | +-------------------------+----------------------+ 7 rows in set (0.00 sec) MariaDB [(none)]>
2, test the connection to the primary server is successful, only the rights to copy , can not see the other libraries
[root@node2 ~]# mysql -uslave -p123 -h 192.168.210.132 MariaDB [(none)]> MariaDB [(none)]> MariaDB [(none)]> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | test | +--------------------+ 2 rows in set (0.00 sec) MariaDB [(none)]>
3, the normal into the database, and consistent with the primary database server
[root@node2 ~]# mysql -u root MariaDB [(none)]> create database zn; Query OK, 1 row affected (0.00 sec) MariaDB [(none)]> exit [root@node2 ~]# mysql -uroot zn<zn.sql
4, from the server is not necessary to open the bin-log log, modify the configuration file from the server:
[node2 the root @ ~ ] STOP # systemctl mariadb.service [node2 the root @ ~] # Vim / etc / the my.cnf [mysqld] Server - ID = 2 # from the server ID number, and not the same as the main ID, if a plurality of from the server, each must have a unique server-id value from the server, the server must not, and the other from the same master server. Server-id value may be considered similar to IP Address: The ID value uniquely identifying each replicated server instance of the server cluster.
5, the slave stop the service, set the master node ip, master_user synchronize user and password
[root@node2 ~]# mysql -u root MariaDB [(none)]> stop slave; Query OK, 0 rows affected (0.00 sec) MariaDB [(none)]> MariaDB [(none)]> change master to master_host='192.168.210.132',master_user='slave',master_password='123'; Query OK, 0 rows affected (0.00 sec) MariaDB [(none)]> MariaDB [(none)]> start slave; Query OK, 0 rows affected (0.00 sec) MariaDB [(none)]>MariaDB [(none)]> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.210.132
Master_User: slave
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin-master.000001
Read_Master_Log_Pos: 384
Relay_Log_File: mariadb-relay-bin.000002
Relay_Log_Pos: 675
Relay_Master_Log_File: mysql-bin-master.000001
Slave_IO_Running: Yes #负责与主机的io通信
Slave_SQL_Running: Yes #负责自己的slave mysql进程
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: 384
Relay_Log_Space: 971
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: 1
1 row in set (0.00 sec)
MariaDB [(none)]>
Three, maste node
And then check the status of the primary server:
[root@node3 mysql]# mysql -u root
MariaDB [(none)]> show processlist\G *************************** 1. row *************************** Id: 11 User: slave Host: node2:37878 db: NULL Command: Binlog Dump Time: 343 State: Master has sent all binlog to slave; waiting for binlog to be updated Info: NULL Progress: 0.000
Fourth, if you encounter the main unsynchronized repair
(1) in the master node, the master from the look position of the bin-log, and then synchronize
MariaDB [(none)]> show master status;
+-------------------------+----------+--------------+------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+-------------------------+----------+--------------+------------------+
| mysql-bin-master.000001 | 384 | zn | mysql |
+-------------------------+----------+--------------+------------------+
1 row in set (0.00 sec)
MariaDB [(none)]> show binlog events\G
*************************** 1. row ***************************
Log_name: mysql-bin-master.000001
Pos: 4
Event_type: Format_desc
Server_id: 1
End_log_pos: 245
Info: Server ver: 5.5.60-MariaDB, Binlog ver: 4
*************************** 2. row ***************************
Log_name: mysql-bin-master.000001
Pos: 245
Event_type: Query
Server_id: 1
End_log_pos: 384
Info: grant replication slave on *.* to slave@'%' identified by "123"
2 rows in set (0.00 sec)
MariaDB [(none)]>
(2) slave node performs under the MySQL command:
MariaDB [(none)]> STOP Slave; Query the OK, 0 rows affected ( 0.01 sec) MariaDB [(none)] > MariaDB [(none)] > Change Master to MASTER_LOG_FILE = ' MySQL-bin-master.000002 ' , MASTER_LOG_POS = 245 ; Query the OK, 0 rows affected ( 0.01 sec) # the results show master status above the primary server, recording the binary database server return, to synchronize the effect MariaDB [(none)] > MariaDB [(none) ]> Slave Start; Query the OK, 0 rows affected ( 0.00 sec) MariaDB [(none)] > Show Slave Status \ G Slave_IO_Running: Yes # if we are all yes, that means already in sync Slave_SQL_Running: Yes