003.MySQL高可用主从复制新增slave

  1 [root@Slave02 ~]# yum list installed | grep mysql	#查看是否存在其他MySQL组件
  2 [root@Slave02 ~]# yum -y remove mysql-libs.x86_64	#为避免冲突引发报错，卸载已存在的组件
  3 [root@Slave02 ~]# wget http://mirrors.ustc.edu.cn/mysql-repo/mysql-community-release-el6-5.noarch.rpm
  4 [root@Slave02 ~]# rpm -ivh mysql-community-release-el6-5.noarch.rpm
  5 [root@Slave02 ~]# yum install mysql-community-server -y
  6 [root@Slave02 ~]# chkconfig --list | grep mysqld	#查看MySQL是否加入启动项
  7 [root@Slave02 ~]# chkconfig mysqld on

  1 [root@Master ~]# service mysqld start
  2 [root@Master ~]# mysql_secure_installation
  3 [root@Master ~]# service iptables stop
  4 [root@Master ~]# chkconfig iptables off

  1 [root@Master ~]# mysql -uroot -px120952576
  2 mysql> flush tables with read lock;				#锁定主库的表
  3 mysql> show master status\G

  1 [root@Master ~]# mysqldump -R -u root -p mysqltest >/tmp/mysqltest.sql
  2 Enter password:

  1 [root@Master ~]# mysql -uroot -px120952576
  2 mysql> unlock tables;

  1 [root@Master ~]# scp /tmp/mysqltest.sql root@172.24.8.20:/tmp

  1 [root@Master ~]# mysql -uroot -p
  2 Enter password:
  3 mysql> create database mysqltest02;
  4 mysql> use mysqltest02;
  5 mysql> create table user02(id int(5),name char(10));
  6 mysql> insert into user02 values (00002,‘lisi‘);
  7 mysql> grant replication slave on *.* to ‘repl_user‘@‘172.24.8.%‘ identified by ‘x12345678‘;

  1 [root@Slave02 ~]# vi /etc/my.cnf
  2 [mysqld]
  3 server-id=3
  4 log-bin=mysql-bin
  5 relay_log=mysql-relay-bin
  6 log_slave_updates=1
  7 read_only=1
  8 [root@Slave02 ~]# service mysqld restart

  1 [root@Slave02 ~]# mysql -uroot -px120952576
  2 mysql> create database mysqltest;
  3 mysql> use mysqltest;
  4 mysql> source /tmp/mysqltest.sql;
  5 mysql> select * from mysqltest.user;			#查看验证

  1 [root@Slave02 ~]# mysql -uroot -px120952576
  2 mysql> change master to master_host=‘172.24.8.10‘,
  3 master_user=‘repl_user‘,
  4 master_password=‘x12345678‘,
  5 master_log_file=‘mysql-bin.000003‘,
  6 master_log_pos=120;
  7 mysql> start slave;

  1 [root@Slave ~]# mysql -uroot -px120952576
  2 [root@Slave02 ~]# mysql -uroot -px120952576
  3 mysql> select * from mysqltest02.user02;
  4 #两台slave上均验证master第二次创建的测试库是否正常复制过来。

  1 [root@Slave ~]# mysql -uroot -px120952576
  2 mysql> stop slave;
  3 mysql> show slave status\G

  1 [root@Slave01 ~]# mysqldump -R -u root -p mysqltest >/tmp/mysqltest.sql
  2 Enter password:

  1 [root@Slave01 ~]# scp /tmp/mysqltest.sql root@172.24.8.20:/tmp

  1 [root@Master ~]# mysql -uroot -p
  2 Enter password:
  3 mysql> create database mysqltest02;
  4 mysql> use mysqltest02;
  5 mysql> create table user02(id int(5),name char(10));
  6 mysql> insert into user02 values (00002,‘lisi‘);
  7 mysql> grant replication slave on *.* to ‘repl_user‘@‘172.24.8.%‘ identified by ‘x12345678‘;

  1 [root@Slave02 ~]# mysql -uroot -px120952576
  2 mysql> change master to master_host=‘172.24.8.10‘,
  3 master_user=‘repl_user‘,
  4 master_password=‘x12345678‘,
  5 master_log_file=‘mysql-bin.000003‘,
  6 master_log_pos=932;
  7 mysql> start slave;