Keepalived安装

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yum install -y openssl-devel

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cd /usr/local/src/nginx-1.22.0/keepalived-2.2.7
./configure --prefix=/usr/local/src/keepalived-2.2.7
make
make install

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cp -r /usr/local/src/nginx-1.22.0/keepalived-2.2.7/keepalived/etc/init.d/ /etc/init.d/
cp /usr/local/src/nginx-1.22.0/keepalived-2.2.2/keepalived/etc/sysconfig/keepalived /etc/sysconfig/
cp /usr/local/src/nginx-1.22.0/keepalived-.2.27/keepalived/keepalived /usr/sbin/
cp -r /usr/local/src/keepalived-2.2.7/etc/keepalived /etc/

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# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived

global_defs {
  notificaiton_email {
  }
  notification_email_from Alexandre.Cassen@firewall.loc
  smtp_server 127.0.0.1
  smtp_connect_timeout 30
  router_id LVS_DEVEL
  vrrp_skip_check_adv_addr
  vrrp_strict
  vrrp_garp_interval 0
  vrrp_gna_interval 0
}

vrrp_script chk_http_port {
  script "/etc/keepalived/check_nginx.sh"
  interval 2
  weight 2
}

vrrp_instance VI_1 {
  state BACKUP
  nopreempt
  interface ens192
  virtual_router_id 51
  priority 150
  advert_int 1
  authencation {
    auth_type PASS
    auth_pass 1111
  }
  track_script {
    chk_http_port
  }
  virtual_ipaddress {
    10.xx.xx.xx/xx
  }
}

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# vim /etc/keepalived/check_nginx.sh

#!/bin/bash
A=`ps -C nginx --no-header | wc -l`
if [ $A -eq 0 ]; then
  killall keepalived
fi