数据库高可用-安装mysql(Percona-Server)-slave

1创建虚拟机

2修改静态ip

3用Xshell打开

4创建mysql文件夹

[root@localhost ~]# cd /usr/local/src/
[root@localhost src]# ls
[root@localhost src]# mkdir mysql
[root@localhost src]# ls
mysql

5上传Percona-Serve安装文件 https://pan.baidu.com/s/1tMfUsTxmSHJ_6350B8yIXg

[root@localhost src]# cd mysql
[root@localhost mysql]# pwd
/usr/local/src/mysql
[root@localhost mysql]# rz -E
rz waiting to receive.

6解压安装文件

[root@localhost mysql]# ls
Percona-Server-5.6.24-72.2-r8d0f85b-el6-x86_64-bundle.tar
[root@localhost mysql]# tar -xvf Percona-Server-5.6.24-72.2-r8d0f85b-el6-x86_64-bundle.tar 

7按照如下步骤安装

[root@localhost mysql]# rpm -ivh Percona-Server-56-debuginfo-5.6.24-rel72.2.el6.x86_64.rpm 

[root@localhost mysql]# rpm -ivh Percona-Server-shared-56-5.6.24-rel72.2.el6.x86_64.rpm 

[root@localhost mysql]# rpm -ivh Percona-Server-client-56-5.6.24-rel72.2.el6.x86_64.rpm 

[root@localhost mysql]# rpm -ivh Percona-Server-server-56-5.6.24-rel72.2.el6.x86_64.rpm 

8启动mysql服务项

[root@localhost mysql]# service mysql start
Starting MySQL (Percona Server).. SUCCESS! 

9为mysql设定用户名密码，忽略警告信息

[root@localhost mysql]# mysqladmin -u 'root' password 'root'
Warning: Using a password on the command line interface can be insecure.

10先进mysql安装目录查看一下

[root@localhost mysql]#  cd /var/lib/mysql
[root@localhost mysql]# ls
auto.cnf  ibdata1  ib_logfile0  ib_logfile1  localhost.localdomain.pid  mysql  mysql.sock  performance_schema  RPM_UPGRADE_HISTORY  RPM_UPGRADE_MARKER-LAST  test

11登录mysql查看下数据库

[root@localhost mysql]# mysql -u root -p root
mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| test               |
+--------------------+
4 rows in set (0.05 sec)

12开启远程访问权限

mysql> grant all on *.* to 'root'@'%' identified by 'root';
Query OK, 0 rows affected (0.02 sec)
mysql> quit
Bye

13开启3306端口

[root@localhost mysql]#  iptables -I INPUT -p tcp --dport 3306 -j ACCEPT

14用SQLyog连接

看到数据库表示连接成功

15修改从库配置环境变量文件

[root@localhost mysql]# vim /etc/my.cnf 

从第7行开始修改

server-id=2
log-bin=mysql-bin

定义从机id标识从机
开启二进制文件防止以后从库里还有从库，文件可以与主机重名，因为不在同一台机器
完整配置文件如下

[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
server-id=2
log-bin=mysql-bin
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

保存并退出

:wq

16重启从库mysql服务

[root@localhost mysql]# service mysql restart

17再次检查安装目录

[root@localhost mysql]# cd /var/lib/mysql/
[root@localhost mysql]# ls
auto.cnf  ib_logfile0  localhost.localdomain.pid  mysql-bin.000001  mysql.sock          RPM_UPGRADE_HISTORY      test
ibdata1   ib_logfile1  mysql                      mysql-bin.index   performance_schema  RPM_UPGRADE_MARKER-LAST

发现二进制文件 mysql-bin.000001表示二进制日志文件启用成功

18实现主从挂载

查看主库状态(主库创建完成后应该告诉从库，主库的二进制日志名称和二进制日志的位置，这时从库才能根据位置实现实时备份)
打卡SQLyog连接到主库，输入如下命令

-- 查看主库状态 二进制文件名->mysql-bin.000001 二进制日志文件的位置->120
SHOW MASTER STATUS;

实现从库挂载主库

数据库中的主从复制，实质就是讲从库挂载到主库的操作。

主从挂载的语法
change master to 主机host="ip地址" 主机port=3306,
主机user="rooot",主机password="root",
主机二进制文件名称="mysql-bin-00001",主机pos=120

打卡SQLyog连接到从库，输入如下命令,忽略产生的警告

CHANGE MASTER TO MASTER_HOST="192.168.6.132",MASTER_PORT=3306,
MASTER_USER="root",MASTER_PASSWORD="root",
MASTER_LOG_FILE="mysql-bin.000001",MASTER_LOG_POS=120

启动从库

START SLAVE

检查从库是否挂载

SHOW SLAVE STATUS

这时如果在master创建数据库

那么slave也会同步