keepavlied配置安装

 

                                                                 Keepalived安装配置

 

1.官网上面下载keepalived   

（本次安装的是keepalived-1.1.14）

*注意：keepalived1.2或者别的高版本安装时，可能编译时会报错。和linux内核版本有关

2.编译安装：

        tar  zxvf  keepalived-1.1.14.tar.gz

        cd  keepalived-1.1.14

        ./configure  --prefix=/usr/local/keepalived/ --with-config-file=/usr/local/keepalived/conf/

         Make && make  install

3.修改配置：

 cd  keepalived-1.1.14

cp  keepalived/etc/init.d/keepalived.sysconfig  /etc/sysconfig/keepalived （keepalived启动时会调用）

cp  keepalived/etc/init.d/keepalived.init  /etc/init.d/keepalived （加入service启动项）

cp  -r  /usr/local/keepalived/etc/keepalived  /etc/

4.修改配置文件/etc/keepalived/conf/keepalived.conf

! Configuration File for keepalived
global_defs {
   notification_email {

    [e-mail]

   }

   notification_email_from [e-mail]

   smtp_server 192.168.200.1

   smtp_connect_timeout 30

   router_id LVS_DEVEL

}

vrrp_script chk_haproxy {      //使用脚本检测haproxy存活状态



        script "/etc/keepalived/checkhaproxy.sh"

        interval 2

        weight 2

}
vrrp_instance VI_1 {

    state MASTER

    interface eth0
    dont_track_primary
    track_interface  //检测内网外网的网卡是否健康，里面任意一块网卡出现问题，都会进入故障(FAULT)状态
    {
        eth0
        eth1
    }
    virtual_router_id 51  //51这个数字要和backup上面的数字对应一致

    priority 200

    advert_int 1

    authentication {

        auth_type PASS

        auth_pass 1214

    }

        track_script {

        chk_haproxy

        }

    virtual_ipaddress {

     192.168.0.244

    }

}

vrrp_instance VI_2 {

    state BACKUP

    interface eth0

    virtual_router_id 50

    priority 100

    advert_int 1

    authentication {

        auth_type PASS

        auth_pass 1214

    }

    virtual_ipaddress {

      192.168.0.223

    }

}

5.启动keepalived：

/etc/init.d/keepalived  start

Starting keepalived:                                       [  OK  ]

ps  aux |grep  keepalived

root      5683  0.0  0.0   5032   564 ?      Ss   11:07   0:00 keepalived -D

root      5684  0.0  0.0   5080  1416 ?      S    11:07   0:00 keepalived -D

root      5685  4.0  0.0   5080   932 ?      S    11:07   0:00 keepalived –D

6.使用 ip  addr检测vip是否失效

Ip addr

eth0: mtu 1500 qdisc pfifo_fast qlen 1000

    link/ether 00:50:56:98:00:07 brd ff:ff:ff:ff:ff:ff

    inet 61.147.69.165/26 brd 61.147.69.191 scope global eth0

    inet 192.168.0.244/32 scope global eth0

        inet 192.168.0.223/32 scope global eth0

已经生效