美文网首页我用 LinuxLinux学习之路
在centos7上配置mariadb主从数据库 2019-05-

在centos7上配置mariadb主从数据库 2019-05-

作者: 我是布谷鸟 | 来源:发表于2019-05-11 19:47 被阅读2次

    准备两台centos7:node1、node2

    关闭防火墙:

    
    [root@node1~]# systemctl stop firewalld
    
    [root@node1~]# iptables -F
    
    [root@node1 ~]# iptables -X
    
    [root@node1 ~]# iptables -Z
    
    [root@node1 ~]# /usr/sbin/iptables-save
    
    [root@node1 ~]# setenforce 0
    

    配置yum源:(这里用的是CentOS-7-x86_64-DVD-1511.iso)

    [root@node1 ~]# cat /etc/yum.repos.d/centos.repo
    
    [centos]
    
    name=centos
    
    baseurl=ftp://192.168.100.10/centos
    
    gpgcheck=0
    
    enabled=1
    

    安装数据库:

    [root@node1 ~]# yum -y install mariadb-server
    

    修改配置文件:

    node1:

    [root@node1 ~]# cat /etc/my.cnf
    
    在[mysqld]下添加:
    
    server_id=1
    
    log-bin=mysql-bin
    

    node2:

    [root@node2 ~]# cat /etc/my.cnf
    
    在[mysqld]下添加:
    
    server_id=2
    

    启动数据库:

    node1:

    [root@node1 ~]# systemctl start mariadb
    
    使用mysql命令直接登录
    
    查看主节点二进制日志文件名称和位置:
    
    MariaDB [(none)]> show master status;
    
    +------------------+----------+--------------+------------------+
    
    | File            | Position | Binlog_Do_DB | Binlog_Ignore_DB |
    
    +------------------+----------+--------------+------------------+
    
    | mysql-bin.000004 |      336 |              |                  |
    
    +------------------+----------+--------------+------------------+
    
    1 row in set (0.00 sec)
    
    创建在从节点登录的用户:
    
    MariaDB [(none)]> grant replication slave on *.* to "user"@"192.168.200.107" identified by "000000";
    
    Query OK, 0 rows affected (0.00 sec)(192.168.20.107为从节点IP)
    

    node2:

    [root@node2~]# systemctl start mariadb
    
    连接主库:
    
    MariaDB [(none)]> change master to master_host='192.168.200.106',master_user='user',master_password='000000',master_port=3306,master_log_file='mysql-bin.000004',master_log_pos=336,master_connect_retry=10;
    
    启动从节点服务:
    
    MariaDB [(none)]> slave start;
    
    Query OK, 0 rows affected, 1 warning (0.00 sec)
    
    查看状态:
    
    MariaDB [(none)]> show slave status\G;
    
    *************************** 1. row ***************************
    
                  Slave_IO_State: Waiting for master to send event
    
                      Master_Host: 192.168.200.106
    
                      Master_User: user
    
                      Master_Port: 3306
    
                    Connect_Retry: 10
    
                  Master_Log_File: mysql-bin.000004
    
              Read_Master_Log_Pos: 492
    
                  Relay_Log_File: mariadb-relay-bin.000003
    
                    Relay_Log_Pos: 776
    
            Relay_Master_Log_File: mysql-bin.000004
    
                Slave_IO_Running: Yes
    
                Slave_SQL_Running: Yes
    

    (成功后Slave_IO_Running: Yes、Slave_SQL_Running: Yes这两项会是yes)

    之后在node1上对数据库的编辑会同步到从数据库node2。

    附:

    master_host='主库地址'
    
    master_user='',master_password=''用来登录主库的账号
    
    master_port=主库端口号
    
    master_log_file='主库二进制日志文件'
    
    master_log_pos=日志位置
    
    master_connect_retry=连接重试次数

    相关文章

      网友评论

        本文标题:在centos7上配置mariadb主从数据库 2019-05-

        本文链接:https://www.haomeiwen.com/subject/cadfaqtx.html