【keepalived】k8s master keepalive

k8s master01
$ cat /usr/local/etc/keepalived/keepalived.conf

! Configuration File for keepalived

global_defs {
   router_id LVS_DEVEL
   vrrp_skip_check_adv_addr
!  vrrp_strict
   vrrp_garp_interval 0
   vrrp_gna_interval 0
}

vrrp_script chk_apiserver {
   script "/usr/local/etc/keepalived/check_master.sh"
   interval 2
   weight -30
}

vrrp_instance VI_1 {
    state MASTER
    priority 100
  interface eth0
    virtual_router_id 40
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 111
    }
    virtual_ipaddress {
        192.168.1.110
    }
    track_script {
        chk_apiserver
    }
}

k8s master02
$ cat /usr/local/etc/keepalived/keepalived.conf

! Configuration File for keepalived

global_defs {
   router_id LVS_DEVEL
   vrrp_skip_check_adv_addr
!  vrrp_strict
   vrrp_garp_interval 0
   vrrp_gna_interval 0
}

vrrp_script chk_apiserver {
   script "/usr/local/etc/keepalived/check_master.sh"
   interval 2
   weight -30
}

vrrp_instance VI_1 {
    state BACKUP
    priority 90
    interface eth0
    virtual_router_id 40
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 111
    }
    virtual_ipaddress {
        192.168.1.110
    }
    track_script {
        chk_apiserver
    }
}

k8s master03
$ cat /usr/local/etc/keepalived/keepalived.conf

! Configuration File for keepalived

global_defs {
   router_id LVS_DEVEL
   vrrp_skip_check_adv_addr
!  vrrp_strict
   vrrp_garp_interval 0
   vrrp_gna_interval 0
}

vrrp_script chk_apiserver {
   script "/usr/local/etc/keepalived/check_master.sh"
   interval 2
   weight -30
}

vrrp_instance VI_1 {
    state BACKUP
    priority 80
    interface eth0
    virtual_router_id 40
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 111
    }
    virtual_ipaddress {
        192.168.1.110
    }
    track_script {
        chk_apiserver
    }
}

$ cat /usr/local/etc/keepalived/check_master.sh

#!/bin/sh
errorExit() {
    echo "*** $*" 1>&2
    exit 1
}

curl --silent --max-time 2 --insecure https://localhost:6443/ -o /dev/null || errorExit "Error GET https://localhost:6443/"
if ip addr | grep -q 10.12.32.7; then
    curl --silent --max-time 2 --insecure https://192.168.1.110:6443/ -o /dev/null || errorExit "Error GET https://10.12.32.7:6443/"
fi