Keepalived+nginx Nginx High Availability (personal simple not detailed record)

1, the installation is used by Yum

Nginx is the official latest source

[Nginx]

Name=nginx Repo

baseurl=http://nginx.org/packages/centos/$releasever/$basearch/

Gpgcheck=0

Enabled=1

Yum Install Nginx keepalived-y

2,keepalived configuration file.

Master: Configuration file contents

[Email protected] opt]# cat/etc/keepalived/keepalived.conf

! Configuration File for Keepalived

Vrrp_script Chk_http_port {

Script "/opt/nginx_pid.sh"

Interval 2

Weight-5

}

Vrrp_instance Vi_1 {

State MASTER

Interface eth0

VIRTUAL_ROUTER_ID 81

Priority 100

Advert_int 1

Authentication {

Auth_type PASS

Auth_pass 1111

}

Track_script {

Chk_http_port

}

virtual_ipaddress {

172.16.226.100

}

notify_master/tmp/keep.sh

notify_backup/tmp/keep.sh

notify_fault/tmp/keep.sh

notify_stop/tmp/keep.sh

}

From: Configuration file contents.

[Email protected] ~]# cat/etc/keepalived/keepalived.conf

! Configuration File for Keepalived

Vrrp_script Chk_http_port {

Script "/opt/nginx_pid.sh"

Interval 2

Weight-5

}

Vrrp_instance Vi_1 {

State BACKUP

Interface eth0

VIRTUAL_ROUTER_ID 81

Priority 99

Advert_int 1

Authentication {

Auth_type PASS

Auth_pass 1111

}

Track_script {

Chk_http_port

}

virtual_ipaddress {

172.16.226.100

}

notify_master/tmp/keep_master.sh

notify_backup/tmp/keep_backup.sh

notify_fault/tmp/keep_fault.sh

notify_stop/tmp/keep_stop.sh

}

Nginx Related script:

[Email protected] ~]# cat/opt/nginx_pid.sh

#!/bin/bash

A= ' ps-c nginx--no-header|wc-l '

If [$A-eq 0];then

/usr/sbin/nginx-c/etc/nginx/nginx.conf

Sleep 3

If [' Ps-c nginx--no-header|wc-l '-eq 0];then

Killall keepalived

Fi

Fi

Test Two servers VIP switch is smooth, nginx related script execution is normal, it should be noted that the script to have execute permissions.

Keepalived+nginx Nginx High Availability (personal simple not detailed record)