MySQL主从复制
Mysql主从复制配置
1.环境
系统版本：Centos5.8 x86_64
Mysql版本：Mysql5.6.16
安装方式：源码编译
服务器规划：
Master:10.0.0.171
Slave1:10.0.0.172
Slave2:10.0.0173
2.安装
2.1安装依赖
[root@zookeeper1 ~]# yum install �Cy gcc gcc-c++ cmake ncurses ncurses-devel
2.2编译并安装
[root@zookeeper1 ~]# cd mysql-5.6.16
[root@zookeeper1 mysql-5.6.16]# cmake . && make && make install
注意：若cmake出现错误，解决后需删除CMakeCache.txt再重新cmake
3.初始化配置
[root@zookeeper1 ~]# groupadd mysql
[root@zookeeper1 ~]# useradd -r -M -g mysql mysql
[root@zookeeper1 ~]# cd /usr/local/mysql
[root@zookeeper1 mysql]# chown -R mysql.mysql /usr/local/mysql
[root@zookeeper1mysql]#./scripts/mysql_install_db --user=mysql
[root@zookeeper1mysql]# chown -R root /usr/local/mysql
[root@zookeeper1mysql]# chown -R mysql /usr/local/mysql/data
[root@zookeeper1mysql]# cp support-files/mysql.server /etc/init.d/mysqld
3. 主从复制配置
3.1 Master 所需操作
§启用binlog
§修改server-id
§创建主从复制账户
[root@zookeeper1 mysql]# vim my.cnf
[mysqld]
log_bin=mysql-master-bin.log //启动binlog
sync_binlog=1
innodb_flush_log_at_trx_commit=1
//以上两条为防止服务器宕机但数据未保存到硬盘造成数据丢失
datadir =/usr/local/mysql/data
//数据存储位置
server_id = 1
//server-id 必须不同
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
[root@zookeeper1 mysql]# services mysqld start //启动mysql服务
[root@zookeeper1 mysql]# mysql -u root -p //登录mysql，密码为challenger
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 12
Server version: 5.6.16-log Source distribution
Copyright (c) 2000, 2014, Oracle and/or itsaffiliates. All rights reserved.
Oracle is a registered trademark of OracleCorporation and/or its
affiliates. Other names may be trademarks oftheir respective
owners.
Type 'help;' or '\h' for help. Type '\c' toclear the current input statement.
mysql> grant replication slave on *.* to ‘repl’@10.0.0.172 identified by 'challenger' ;
mysql> grant replication slave on *.* to ‘repl’@10.0.0.173 identified by 'challenger' ;
//建立复制账号，只能10.0.0.172，和10.0.0173使用
mysql> flush privileges;
//刷新权限
mysql> show master status\G;
*************************** 1. row***************************
File: mysql-master-bin.000004
Position: 755
Binlog_Do_DB:
Binlog_Ignore_DB:
Executed_Gtid_Set:
1 row in set (0.00 sec)
//记下File名称和Position位置，配置从服务器需要。File为二进制日志文件名，Position是二进制日志的记录位置
3.2 Slavs所需操作
注意：每台Slave的配置操作除server-id不同外，其它配置均相同
§修改server-id
§配置master参数
§启动Slave线程
[root@zookeeper2 mysql]# vim my.cnf
[mysqld]
sync_binlog=1
innodb_flush_log_at_trx_commit=1
//同Master配置作用相同
read_only = 1 //关闭Slave服务器的写操作
datadir =/usr/local/mysql/data
server_id = 11 //server-id,必须不同
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
[root@zookeeper2 mysql]# service mysqld start //启动mysql服务
[root@zookeeper2 mysql]# mysql -u root -p //登录mysql，密码为challenger
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 3
Server version: 5.6.16 Source distribution
Copyright (c) 2000, 2011, Oracle and/or itsaffiliates. All rights reserved.
Oracle is a registered trademark of OracleCorporation and/or its
affiliates. Other names may be trademarks oftheir respective
owners.
Type 'help;' or '\h' for help. Type '\c' toclear the current input statement.
mysql> change master to
-> master_host='10.0.0.171’,master_user='repl',master_password=’challenger’,
-> master_log_file=’mysql-master-bin.000004',master_log_pos=755;
//设置master参数，主机名，用户，密码，二进制文件名，同步位置
mysql> start slave; //启动复制线程
mysql> show slave status\G;
//查看slave状态，若出现
// Slave_IO_Running: Yes
// Slave_SQL_Running: Yes
//则表明主从复制已正常启动