• MariaDB主从备份记录


    一、预期效果:

      环境: centos 6.5   mariadb 10.0.14 (mysql -V)

      主服务器:192.168.5.206   从服务器:192.168.5.207   主服务器数据库有任何变动,从服务会跟着变动。

    二、前期准备:

      确保主从数据库数据一致。

      mysqldump -uroot -p 数据库名 > db.sql
    mysql -uroot -p 数据库名 < db.sql

    三、配置:

      1⃣️  主服务器:vi /etc/my.cnf.d/server.cnf   添加如下配置,确保log-bin文件存在,所属用户组与mysql一致并增加X权限。

    # this is only for the mysqld standalone daemon
    [mysqld]
    log-bin=/var/lib/mysql/log/master-bin
    server-id=1

      2⃣️  主服务器增加同步账户,从服务器登录该账号同步主服务器的数据。

    MariaDB [(none)]> GRANT REPLICATION SLAVE,RELOAD,SUPER ON *.* TO backup@'192.168.5.207' IDENTIFIED BY 'password';
    
    MariaDB [(none)]> Flush privileges;

    注:backup:用户名 192.168.5.207:从服务器的IP(IP限制) password:登录密码

      3⃣️  从服务器:vi /etc/my.cnf.d/server.cnf 添加如下配置,同样保证salve-bin , relay-bin 文件存在,所属用户组与mysql一致并增加X权限。

    # this is only for the mysqld standalone daemon
    [mysqld]
    log-bin=/var/lib/mysql/log/salve-bin
    server-id=2
    relay-log=/var/lib/mysql/log/relay-bin
    log-slave-updates=1
    read-only=1

    重启从服务器 service mysql restart

      4⃣️  主从配置:

    主服务器:
    MariaDB [(none)]> show master status;
    +-------------------+----------+--------------+------------------+
    | File              | Position | Binlog_Do_DB | Binlog_Ignore_DB |
    +-------------------+----------+--------------+------------------+
    | master-bin.000003 |    17030 |              |                  |
    +-------------------+----------+--------------+------------------+
    1 row in set (0.00 sec)
    从服务器:
    MariaDB [(none)]> change master to master_host='192.168.5.206',
        -> master_user='backup',
        -> master_password='password',
        -> master_log_file='master-bin.000003',
        -> master_log_pos=0;
    Query OK, 0 rows affected (0.03 sec)

    MariaDB [(none)]> start slave;
    Query OK, 0 rows affected (0.00 sec)

    如果此处出现错误, MariaDB [(none)]> reset slave;  重新从服务器重新上述操作。

    MariaDB [(none)]> show slave status G;
    *************************** 1. row ***************************
    Slave_IO_State: Waiting for master to send event
    Master_Host: 192.168.5.206
    Master_User: backup1
    Master_Port: 3306
    Connect_Retry: 60
    Master_Log_File: master-bin.000004
    Read_Master_Log_Pos: 23773
    Relay_Log_File: relay-bin.000004
    Relay_Log_Pos: 24061
    Relay_Master_Log_File: master-bin.000004
    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: 23773
    Relay_Log_Space: 24640
    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
    Master_SSL_Crl:
    Master_SSL_Crlpath:
    Using_Gtid: No
    Gtid_IO_Pos:
    1 row in set (0.00 sec)

    ERROR: No query specified   

    至此,已经OK了。

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  • 原文地址:https://www.cnblogs.com/logo-fox/p/5685544.html
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