keepalived高可用使用说明

Keepalived安装及配置

 

 

Keepalived源码包见附件

1、使用tar –zxvfkeepalived1.2.13.tar.gz命令进行压缩包的解压

2、进入解压后的文件夹，执行以下命令

#./configure --prefix=/usr/local/keepalived

#make

#make install

3、将keepalived注册到系统服务中

[root@node106keepalived-1.2.13]# cp /usr/local/keepalived/sbin/keepalived /usr/sbin/

[root@ node106keepalived-1.2.13]# cp /usr/local/keepalived/etc/sysconfig/keepalived/etc/sysconfig/

[root@ node106keepalived-1.2.13]# cp /usr/local/keepalived/etc/rc.d/init.d/keepalived/etc/init.d/

[root@ node106keepalived-1.2.13]# service keepalived start

正在启动keepalived：                                      [确定]

[root@ node106keepalived-1.2.13]# service keepalived stop

停止keepalived：                                          [确定]

 

 

此时说明keepalived编译安装无问题

 

配置keepalived

 

主服务器：mkdir /etc/keepalived

vimkeepalived.conf到/etc/keepalived下

备份服务器：mkdir /etc/keepalived

vim keepalived.conf到/etc/keepalived下

 

 

1、主机conf文件：

! Configuration File for keepalived

global_defs {

  notification_email {

    jp14126@163.com #邮件通知地址

   }

   notification_email_from keepalived@test.com

   smtp_server 127.0.0.1

   smtp_connect_timeout 30

router_id LVS_DEVEL

}

 

vrrp_script chk_http_port {

                script “</dev/tcp/127.0.0.1/8080”

                interval 1                      #监控时间

                weight -15                             

}

vrrp_instance VI_1 {

   state MASTER    #设置为主服务器

   interface eth0  #监测网络接口

   virtual_router_id 66  #主、备必须一样

   priority 100   #(主、备机取不同的优先级，主机值较大，备份机值较小,值越大优先级越高)

   advert_int 1   #VRRP Multicast广播周期秒数

   authentication {

       auth_type PASS  #VRRP认证方式，主备必须一致

       auth_pass 1111   #(密码)

    }

 

 track_script {

                chk_http_port   #调用http进程监控脚本

       }

 

   virtual_ipaddress {

       172.16.1.101  #VRRP HA虚拟地址

}

}

2、备机conf文件：

 

! Configuration File for keepalived

global_defs {

  notification_email {

    jp14126@163.com #邮件通知地址

   }

   notification_email_from keepalived@test.com

   smtp_server 127.0.0.1

   smtp_connect_timeout 30

router_id LVS_DEVEL

}

 

vrrp_script chk_http_port {

     script “</dev/tcp/127.0.0.1/8080”

                interval 1                      #监控时间

                weight -15   }

vrrp_instance VI_1 {

   state BAKCUP    #设置为主服务器

   interface eth1  #监测网络接口

   virtual_router_id 66  #主、备必须一样

   priority 90   #(主、备机取不同的优先级，主机值较大，备份机值较小,值越大优先级越高)

   advert_int 1   #VRRP Multicast广播周期秒数

   authentication {

       auth_type PASS  #VRRP认证方式，主备必须一致

       auth_pass 1111   #(密码)

    }

 

 track_script {

                chk_http_port   #调用http进程监控脚本

       }

 

   virtual_ipaddress {

       172.16.1.101  #VRRP HA虚拟地址

}

}

 

注意：主备两台机器的虚拟ipaddress和router id 须一致，并且和两台服务器的网段需要一致。两台机器均开启keepalived服务时，通过ip a 可以看到虚拟ip漂浮在主用机上，关闭主用机上的keepalived，发现虚拟ip漂移到备用机上。