nginx 安装

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rpm -ivh

yum install nginx

#设置开机启动

systemctl enable nginx.service

#启动服务

systemctl start nginx.service

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keepalived 安装

#安装keepavlivedyum -y install keepalived

#设置开机启动

systemctl enable nginx.service

#启动服务

service keepalived start

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keepavlived mater设置

global_defs {

notification_email {

vrrp_instance VI_1 {

state MASTERinterface eth0lvs_sync_daemon_interface eth0virtual_router_id 151priority 100advert_int 5nopreemptauthentication { auth_type PASSauth_pass 1111}#VIPvirtual_ipaddress { 172.16.101.193}track_script { chk_nginx}}

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keepavlived backup 设置

cat keepalived.conf

global_defs {

notification_email {

vrrp_instance VI_1 {

state BACKUPinterface eth0lvs_sync_daemon_interface eth0virtual_router_id 151priority 90advert_int 5authentication { auth_type PASSauth_pass 1111}#VIPvirtual_ipaddress { 172.16.101.193}track_script { chk_nginx}}

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脚本：

cat /etc/keepalived/chk_nginx.sh

#!/bin/sh

A=ps -C nginx --no-header |wc -lif [ $A -eq 0 ];thensystemctl start nginx.servicesleep 2if [ ps -C nginx --no-header |wc -l -eq 0 ];thensystemctl stop keepalivedfifi