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LINUX 下mysql主从安装与同步

时间:2014-07-22 18:13:42      阅读:342      评论:0      收藏:0      [点我收藏+]

标签:mysql   mysql主从   

两台服务器

主:172.16.0.120    Master120

从:172.16.0.121      backup121

两台都要安装mysql如下步骤

安装系统所需要的依赖包

[root@ Master120 ~]# yum -y install gcc gcc-c++ gcc-g77 autoconf automake zlib* fiex* libxml* ncurses-devel libmcrypt* libtool-ltdl-devel*  cmake  bison

 

创建mysql用户与用户组

[root@ Master120 ~]# groupadd mysql

[root@ Master120 ~]# useradd -r -g mysql mysql

 

安装mysql

[root@ Master120 ~]# tar zxvf mysql-5.5.25.tar.gz

[root@ Master120 ~]# cd mysql-5.5.25

[root@Master120 mysql-5.5.25]# cmake -DCMAKE_INSTALL_PREFIX=/opt/mysql/ -DMYSQL_DATADIR=/opt/mysql/data -DMYSQL_UNIX_ADDR=/opt/mysql/data/mysqld.sock -DWITH_INNOBASE_STORAGE_ENGINE=1  -DENABLED_LOCAL_INFILE=1 -DMYSQL_TCP_PORT=3306 -DEXTRA_CHARSETS=all -DDEFAULT_CHARSET=utf8 -DDEFAULT_COLLATION=utf8_general_ci -DMYSQL_UNIX_ADDR=/opt/mysql/data/mysql.sock -DMYSQL_USER=mysql  -DWITH_DEBUG=0

 

[root@ Master120 mysql-5.5.25]# make && make install

 

赋予相关权限

[root@ Master120 mysql-5.5.25]# chown -R mysql:mysql /opt/mysql

 

 

[root@Master120 mysql-5.5.25]#  /opt/mysql/scripts/mysql_install_db --user=mysql --basedir=/opt/mysql   --datadir=/opt/mysql/data

 

mysql配置文件

[root@ Master120 mysql-5.5.25]# cp /opt/mysql/support-files/my-large.cnf /etc/my.cnf

[root@Master120 mysql-5.5.25]# cp /opt/mysql/support-files/mysql.server /etc/init.d/mysql

[root@Master120 mysql-5.5.25]# chmod +x /etc/init.d/mysql

 

增加自动启动

[root@Master120 mysql-5.5.25]# chkconfig mysql on

 

启动mysql

[root@Master120 mysql-5.5.25]# /etc/init.d/mysql start

Starting MySQL......                                       [  OK  ]

 

查看mysql 3306端口,看到下面说明启动成功

[root@Master120 mysql-5.5.25]#ps aux | grep 3306

mysql    17237  3.6  8.4 615660 86264 pts/2    Sl   22:10   0:01 /opt/mysql/bin/mysqld --basedir=/opt/mysql --datadir=/opt/mysql/data --plugin-dir=/opt/mysql/lib/plugin --user=mysql --log-error=/opt/mysql/data/Master120.err --pid-file=/opt/mysql/data/Master120.pid --socket=/opt/mysql/data/mysql.sock --port=3306

root     17798  0.0  0.0  61228   784 pts/2    S+   22:10   0:00 grep 3306

 

 

设置mysql初始密码,123456是密码,你可以设置自己需要的密码

[root@Master120 mysql-5.5.25]# /opt/mysql/bin/mysqladmin -u root password ‘123456‘

 

 

[root@Master120 mysql-5.5.25]# /opt/mysql/bin/mysql -uroot -p123456

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 2

Server version: 5.5.25-log Source distribution

 

Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.

 

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

 

Type ‘help;‘ or ‘\h‘ for help. Type ‘\c‘ to clear the current input statement.

 

mysql>

 

 

主从复制的配置

主的my.cnfserver-id=1,每个同步服务都必须设定一个唯一的编号。

Master(这里为Master120机器)上增加一个用于复制的账号:

mysql>GRANT REPLICATION SLAVE ON *.*  TO ‘repl‘@‘172.16.0.%‘  IDENTIFIED BY ‘123456‘;

mysql>FLUSH REPLICATION;

mysql> show master status;

+------------------+----------+--------------+------------------+

| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |

+------------------+----------+--------------+------------------+

| mysql-bin.000001 |    245 |              |                  |

+------------------+----------+--------------+------------------+

1 row in set (0.00 sec)

设置Slave 主机

修改my.cnfserver-id,内容如下:

backup121主机

server-id=2

开启MasterSlave的同步

Slave上执行如下命令

mysql>CHANGE MASTER TO MASTER_HOST=‘172.16.0.120‘,

         ->MASTER_USER=‘repl‘,

         ->MASTER_PASSWORD=‘123456‘,

         ->MASTER_LOG_FILE=‘mysql-bin.000001‘,

         ->MASTER_LOG_POS=245;

 之后执行

 mysql>slave start;

mysql> show slave status\G

*************************** 1. row ***************************

               Slave_IO_State: Waiting for master to send event

                  Master_Host: 172.16.0.120

                  Master_User: repl

                  Master_Port: 3306

                Connect_Retry: 60

              Master_Log_File: mysql-bin.000001

          Read_Master_Log_Pos: 245

               Relay_Log_File: backup121-relay-bin.000001

                Relay_Log_Pos: 253

        Relay_Master_Log_File: mysql-bin.000001

             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: 245

              Relay_Log_Space: 556

              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)

 

看到都为yes,说明成功

  Slave_IO_Running: Yes

  Slave_SQL_Running: Yes

 

注意防火墙,关闭防火墙或者增加3306端口对外访问

 

如果在生产库中从库同步出错我们可以在从库的my.cnf增加Slave_skip_errors =all 跳过全部错误。

 

 

本文出自 “飛鴻沓膤” 博客,请务必保留此出处http://jxzhfei.blog.51cto.com/1382161/1441349

LINUX 下mysql主从安装与同步

标签:mysql   mysql主从   

原文地址:http://jxzhfei.blog.51cto.com/1382161/1441349

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