Lvs+keepalived+mysql(主从复制)

一、准备环境

操做系统：centos 6.5

2台机器主机名为node5三、node54

 

	Mysql	Lvs	keepalived
node2	Y	Y	Y
node3	Y	Y	Y

 

 

 

 

 

 

二、安装mysql（配置主主复制）

 

 

服务器名称	ip	vip
node2	192.168.0.12	192.168.0.200
node3	192.168.0.13	192.168.0.200

  

 

 

 

 

2.一、安装数据库

      yum install -y mysql

 

2.二、关闭防火墙

    

 service iptables stop

 chkconfig iptables off

 

2.三、修改root用户名/访问权限

use mysql

delete from user where user= '' ;

grant replication slave on *.* to 'root' @ '%' identified by '123456' ;

2.四、修改/etc/my.cnf

在node2机器上配置以下

 

[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

 

log-bin=mysql-bin

server- id =1

#须要记录二进制日志的数据库，若是有多个库，写多个binlog-do-db，用逗号隔开，测试时发现不能同步？有空在研究

binlog- do -db=amdb

binlog- do -db=hivedb

binlog- do -db=ooziedb

#不须要记录日志的数据库

binlog-ignore-db=mysql

#须要同步的数据库

replicate- do -db=amdb

replicate- do -db=hivedb

replicate- do -db=ooziedb

#不须要同步的库

replicate-ignore-db=mysql,information_schema

#默认值3600s

slave-net-timeout=60

 

#保证slave挂在任何一台master上都会接收到另外一个master的写入信息

log-slave-updates

sync_binlog=1

slave-skip-errors=all

auto_increment_offset=1

auto_increment_increment=2

 

[mysqld_safe]

log-error= /var/log/mysqld .log

pid- file = /var/run/mysqld/mysqld .pid

 

 

在node3机器上配置以下

 

 

[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

 

log-bin=mysql-bin

#设置不一样的id

server- id =2

#须要记录二进制日志的数据库，若是有多个库，写多个binlog-do-db，用逗号隔开，测试时发现不能同步？有空在研究

binlog- do -db=amdb

binlog- do -db=hivedb

binlog- do -db=ooziedb

#不须要记录日志的数据库

binlog-ignore-db=mysql

#须要同步的数据库

replicate- do -db=amdb

replicate- do -db=hivedb

replicate- do -db=ooziedb

#不须要同步的库

replicate-ignore-db=mysql,information_schema

#默认值3600s

slave-net-timeout=60

 

#保证slave挂在任何一台master上都会接收到另外一个master的写入信息

log-slave-updates

sync_binlog=1

slave-skip-errors=all

auto_increment_offset=1

auto_increment_increment=2

 

[mysqld_safe]

log-error= /var/log/mysqld .log

pid- file = /var/run/mysqld/mysqld .pid

 

2.五、重启mysql服务

     service mysqld restart

 

2.六、分别在node二、node3上执行

 

mysql> flush tables with read lock; #防止进入新的数据

Query OK, 0 rows affected (0.00 sec)

mysql> show master status\G;

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

             File: mysql-bin.000007

         Position: 438

     Binlog_Do_DB: db_rocky

Binlog_Ignore_DB: mysql

1 row in set (0.00 sec)

 

在node3

 

mysql> flush tables with read lock;

Query OK, 0 rows affected (0.00 sec)

mysql> show master status\G;

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

             File: mysql-bin.000008

         Position: 107

     Binlog_Do_DB: db_rocky

Binlog_Ignore_DB: mysql

1 row in set (0.01 sec)

 

2.七、在node二、node3指定同步位置

在node53

mysql> change master to master_host= '10.211.55.54' ,master_user= 'root' ,master_password= '123456' ,master_log_file= 'mysql-bin.000008' ,master_log_pos=107;

Query OK, 0 rows affected (0.05 sec)

 

在node3

 

mysql> change master to master_host= '10.211.55.53' ,master_user= 'root' ,master_password= '123456' ,

     -> master_log_file= 'mysql-bin.000007' ,master_log_pos=438;

Query OK, 0 rows affected (0.15 sec)

 

注：master_log_file，master_log_pos由上面主服务器查出的状态值中肯定

 

2.八、解锁表

 

mysql> unlock tables;

mysql> start slave;

 

2.九、分别在2台机器查看状态

show slave status\G;

若是显示以下，则正常

  Slave_IO_Running: Yes

  Slave_SQL_Running: Yes

三、Lvs配置

3.1 安装lvs

yum install ipvsadm

3.2 编写启动脚本

 

vim /etc/init .d /realserver .sh

#!/bin/bash

#description: Config realserver lo and apply noarp

  

SNS_VIP=10.211.55.200

/etc/rc .d /init .d /functions

case "$1" in

  

start)

       ifconfig eth0:1 $SNS_VIP /24

       /sbin/route add -host $SNS_VIP dev eth0:1

       echo "vip Start OK"

       ifconfig lo:0 $SNS_VIP netmask 255.255.255.255 broadcast $SNS_VIP

       /sbin/route add -host $SNS_VIP dev lo:0

       echo "1" > /proc/sys/net/ipv4/conf/lo/arp_ignore

       echo "2" > /proc/sys/net/ipv4/conf/lo/arp_announce

       echo "1" > /proc/sys/net/ipv4/conf/all/arp_ignore

       echo "2" > /proc/sys/net/ipv4/conf/all/arp_announce

       sysctl -p > /dev/null 2>&1

       echo "RealServer Start OK"

       ;;

  

stop)

       ifconfig eth0:1 down

       route del $SNS_VIP > /dev/null 2>&1

       echo "vip Stoped"

       ifconfig lo:0 down

       route del $SNS_VIP > /dev/null 2>&1

       echo "0" > /proc/sys/net/ipv4/conf/lo/arp_ignore

       echo "0" > /proc/sys/net/ipv4/conf/lo/arp_announce

       echo "0" > /proc/sys/net/ipv4/conf/all/arp_ignore

       echo "0" > /proc/sys/net/ipv4/conf/all/arp_announce

       echo "RealServer Stoped"

       ;;

  

*)

  

       echo "Usage: $0 {start|stop}"

       exit 1

esac

exit 0

 

配置开机启动

 

 echo "/etc/init.d/realserver.sh start" >> /etc/rc .d /rc . local

四、配置keepalived

4.一、安装keepalived

  yum install keepalived

 

4.二、配置keepalived.conf

 

 

  

vim /etc/keepalived/keepalived .conf

! Configuration File for keepalived

global_defs {

  

         notification_email {

              yangyufans@qq.com

         }

         notification_email_from yangyufans@qq.com

         smtp_server smtp.qq.com

         smtp_connect_timeout 30

         router_id LVS1

}

  

vrrp_sync_group test {

         group {

                 loadbalance

         }

}

  

vrrp_instance loadbalance {

         state MASTER

         lvs_sync_daemon_inteface eth0

         virtual_router_id 51

         priority 150

         advert_int 1

  

         authentication {

                 auth_type PASS

                 auth_pass 1111

         }

  

         virtual_ipaddress {

                 10.211.55.200 dev eth0 label eth0:1

         }

}

virtual_server 10.211.55.200 3306 {

         delay_loop 6

         lb_algo rr

         lb_kind DR

         persistence_timeout 20

         protocol TCP

         sorry_server 10.211.55.54 3306

         real_server 10.211.55.53 3306 {

                 weight 3

                 TCP_CHECK {

                         connect_timeout 3

                         nb_get_retry 3

                         delay_before_retry 3

                         connect_port 3306

                 }

         }

}

 

 

在 node3上配置keepalived.conf

2个参数不一样，其余配置相同

state BACKUP

priority 100

 

chkconfig keepalived on

 

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