卸载

查找安装目录
[root@CentOS-003 keepalived]# find / -name keepalived
删除安装目录
rm -rf /etc/sysconfig/keepalived
rm -rf /etc/keepalived
rm -rf /var/lib/selinux/targeted/active/modules/100/keepalived
rm -rf /usr/sbin/keepalived
rm -rf /usr/share/doc/keepalived
rm -rf /usr/share/selinux/targeted/default/active/modules/100/keepalived
rm -rf /usr/libexec/keepalived

查看进程

[root@CentOS-001 /]#  ps aux|grep keepalived

1.下载安装包

Keepalived for Linux

2.上次解压

[root@CentOS-001 /]# cd /opt/
[root@CentOS-001 opt]# tar xvf keepalived-2.0.20.tar.gz

3.安装

[root@CentOS-003 opt]# cd keepalived-2.0.20/
[root@CentOS-003 keepalived-2.0.20]#  ./configure --prefix=/usr/local/keepalived
[root@CentOS-003 keepalived-2.0.20]# make & make install

4.修改配置

# keepalived 启动脚本变量引用文件，默认文件路径是 /etc/sysconfig/，也可以不做软链接，直接修改启动脚本中文件路径即可（安装目录下）
[root@CentOS-001 keepalived-2.0.20]# cp /usr/local/keepalived/etc/sysconfig/keepalived  /etc/sysconfig/keepalived

# 将keepalived 主程序加入到环境变量（安装目录下）
[root@CentOS-001 keepalived-2.0.20]# cp /usr/local/keepalived/sbin/keepalived /usr/sbin/keepalived

# keepalived 启动脚本（源码目录下），放到 /etc/init.d/ 目录下就可以使用 service 命令便捷调用

[root@CentOS-001 keepalived-2.0.20]# cp /opt/keepalived-2.0.20/keepalived/etc/init.d/keepalived  /etc/init.d/keepalived

# 将配置文件放到默认路径下
[root@CentOS-001 keepalived-2.0.20]# mkdir /etc/keepalived
[root@CentOS-001 keepalived-2.0.20]# cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf

5.启动

[root@CentOS-001 keepalived-2.0.20]# service keepalived start

6.日志位置

[root@CentOS-001 log]# tail -f /var/log/messages

• 加为系统服务：chkconfig –add keepalived
• 开机启动：chkconfig keepalived on
• 查看开机启动的服务：chkconfig –list
• 启动、关闭、重启 service keepalived start|stop|restart

ip a show |grep -w inet

主从配置

配置文件位置

/etc/keepalived

主

! Configuration File for keepalived
global_defs {
   notification_email {
     acassen@firewall.loc
     failover@firewall.loc
     sysadmin@firewall.loc
   }
   notification_email_from Alexandre.Cassen@firewall.loc
   smtp_server 192.168.200.1
   smtp_connect_timeout 30
   router_id LVS_DEVEL
   vrrp_skip_check_adv_addr
   vrrp_garp_interval 0
   vrrp_gna_interval 0
}
#vrrp_script checkhaproxy
#{
#    script "/etc/keepalived/do_sth.sh"
#    interval 5
#}
vrrp_instance VI_1 {
    state MASTER           #设置ECS1实例为主实例
    interface eth0          #设置网卡名，本示例配置为eth0  
    virtual_router_id 51
    nopreempt              
#   preempt_delay 10
    priority 100             #设置优先级，数字越大，优先级越高，本示例配置主用实例优先级为100
    advert_int 1        
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    unicast_src_ip 172.23.27.241   #设置ECS实例的私网IP地址，本示例配置为192.168.0.209
    unicast_peer {
        172.23.27.240           #对端ECS实例的私网IP地址，本示例配置为192.168.0.210
    }
    virtual_ipaddress {
        120.55.71.172
        172.23.27.242          #设置HaVip的IP地址，本示例配置为192.168.0.88 
    }
    notify_master "/etc/keepalived/notify_action.sh MASTER"
    notify_backup "/etc/keepalived/notify_action.sh BACKUP"
    notify_fault "/etc/keepalived/notify_action.sh FAULT"
    notify_stop "/etc/keepalived/notify_action.sh STOP"
    garp_master_delay 1
    garp_master_refresh 5

    track_interface {
        eth0                #设置ECS实例网卡名，本示例配置为eth0
    }
#    track_script {
#        checkhaproxy 
#    }
}

从

! Configuration File for keepalived
global_defs {
   notification_email {
     acassen@firewall.loc
     failover@firewall.loc
     sysadmin@firewall.loc
   }
   notification_email_from Alexandre.Cassen@firewall.loc
   smtp_server 192.168.200.1
   smtp_connect_timeout 30
   router_id LVS_DEVEL
   vrrp_skip_check_adv_addr
   vrrp_garp_interval 0
   vrrp_gna_interval 0
}
#vrrp_script checkhaproxy
#{
#    script "/etc/keepalived/do_sth.sh"
#    interval 5
#}
vrrp_instance VI_1 {
    state BACKUP           #设置ECS2实例为备用实例
    interface eth0          #设置网卡名，本示例配置为eth0  
    virtual_router_id 51
    nopreempt              
#    preempt_delay 10
    priority 10             #设置优先级，数字越大，优先级越高，本示例配置备用实例优先级为10
    advert_int 1        
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    unicast_src_ip 172.23.27.240   #设置ECS实例的私网IP地址，本示例配置为192.168.0.210
    unicast_peer {
        172.23.27.241           #对端ECS实例的私网IP地址，本示例配置为192.168.0.209
    }
    virtual_ipaddress {
        120.55.71.172
        172.23.27.242          #设置HaVip的IP地址，本示例配置为192.168.0.88 
    }
    notify_master "/etc/keepalived/notify_action.sh MASTER"
    notify_backup "/etc/keepalived/notify_action.sh BACKUP"
    notify_fault "/etc/keepalived/notify_action.sh FAULT"
    notify_stop "/etc/keepalived/notify_action.sh STOP"
    garp_master_delay 1
    garp_master_refresh 5

    track_interface {
        eth0                #设置ECS实例网卡名，本示例配置为eth0
    }
#    track_script {
#        checkhaproxy 
#    }
}