记一次Nginx+Keepalived高可用故障转移

! 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 192.168.2.156
   smtp_connect_timeout 30
   router_id LVS_DEVEL
}
vrrp_script check_nginx {
  script "/data/sh/check_nginx.sh"
  interval 2
  weight 2
}
vrrp_instance VI_1 {
    state BACKUP
    interface eth0
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.2.100
    }
 track_script {
  check_nginx
}
}

! 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 192.168.2.156
   smtp_connect_timeout 30
   router_id LVS_DEVEL
}
vrrp_script check_nginx {
  script "/data/sh/check_nginx.sh"
  interval 2
  weight 2
}
vrrp_instance VI_1 {
    state BACKUP
    interface eth0
   mcast_src_ip 192.168.2.157
    virtual_router_id 51
    priority 90
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.2.100
    }

 track_script {
  check_nginx
}
}

#!/bin/bash 
COUNT=$(ps -C nginx --no-header |wc -l)
if [ "${COUNT}"  =  "0" ];then
        echo "重启nginx"
        sleep 2
     COUNT=$(ps -C nginx --no-header |wc -l)
        if [ "${COUNT}" = "0" ];then
             systemctl  stop  keepalived
        fi
fi