每一台配置下keepalived

#master01 配置：cat >/etc/keepalived/keepalived.conf<<"EOF"! Configuration File for keepalivedglobal_defs {   router_id LVS_DEVEL   script_user root   enable_script_security}vrrp_script chk_apiserver {   script "/etc/keepalived/check_apiserver.sh"   interval 5   weight -5   fall 2   rise 1 #检测一次胜利，则认为在线}vrrp_instance VI_1 {   state BACKUP   nopreempt   interface ens160   mcast_src_ip 10.0.0.20   virtual_router_id 51   priority 100   advert_int 2   authentication {       auth_type PASS       auth_pass K8SHA_KA_AUTH   }   virtual_ipaddress {       10.0.0.30   }   track_script {      chk_apiserver   }}EOF#Master02 配置：cat >/etc/keepalived/keepalived.conf<<"EOF"! Configuration File for keepalivedglobal_defs {   router_id LVS_DEVEL   script_user root   enable_script_security}vrrp_script chk_apiserver {   script "/etc/keepalived/check_apiserver.sh"  interval 5   weight -5   fall 2    rise 1}vrrp_instance VI_1 {   state BACKUP   nopreempt   interface ens160   mcast_src_ip 10.0.0.21   virtual_router_id 51   priority 99   advert_int 2   authentication {       auth_type PASS       auth_pass K8SHA_KA_AUTH   }   virtual_ipaddress {       10.0.0.30   }   track_script {      chk_apiserver   }}EOF#Master03 配置：cat >/etc/keepalived/keepalived.conf<<"EOF"! Configuration File for keepalivedglobal_defs {   router_id LVS_DEVEL   script_user root   enable_script_security}vrrp_script chk_apiserver {   script "/etc/keepalived/check_apiserver.sh" interval 5   weight -5   fall 2    rise 1}vrrp_instance VI_1 {   state BACKUP   nopreempt   interface ens160   mcast_src_ip 10.0.0.22   virtual_router_id 51   priority 98   advert_int 2   authentication {       auth_type PASS       auth_pass K8SHA_KA_AUTH   }   virtual_ipaddress {       10.0.0.30   }    track_script {      chk_apiserver   }EOF

健康检查脚本

cat > /etc/keepalived/check_apiserver.sh <<"EOF"#!/bin/basherr=0for k in $(seq 1 3)do   check_code=$(pgrep haproxy)   if [[ $check_code == "" ]]; then       err=$(expr $err + 1)       sleep 1       continue   else       err=0       break   fidoneif [[ $err != "0" ]]; then   echo "systemctl stop keepalived"   /usr/bin/systemctl stop keepalived   exit 1else   exit 0fiEOFchmod u+x /etc/keepalived/check_apiserver.sh
启动服务systemctl daemon-reloadsystemctl enable --now keepalived

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