keepalived+nginx는 nginx의 고가용성을 실현합니다.

[root@jie1 ~]# yum -y install keepalived

[root@jie1 ~]#tar xf nginx-1.4.2.tar.gz

[root@jie1 ~]#yum -y groupinstall "Development tools" "Server  Platform Development"

[root@jie1 ~]#yum -y install pcre-devel

[root@jie1 ~]# cd nginx-1.4.2

[root@jie1 nginx-1.4.2]# groupadd nginx

[root@jie1 nginx-1.4.2]# useradd -r -g nginx nginx

[root@jie1 nginx-1.4.2]#./configure

--prefix=/usr

--sbin-path=/usr/sbin/nginx

--conf-path=/etc/nginx/nginx.conf

--error-log-path=/var/log/nginx/error.log

--http-log-path=/var/log/nginx/access.log

--pid-path=/var/run/nginx/nginx.pid 

--lock-path=/var/lock/nginx.lock

--user=nginx

--group=nginx

--with-http_ssl_module

--with-http_flv_module

--with-http_stub_status_module

--with-http_gzip_static_module

--http-client-body-temp-path=/var/tmp/nginx/client/

--http-proxy-temp-path=/var/tmp/nginx/proxy/

--http-fastcgi-temp-path=/var/tmp/nginx/fcgi/

--http-uwsgi-temp-path=/var/tmp/nginx/uwsgi

--http-scgi-temp-path=/var/tmp/nginx/scgi

--with-pcre

[root@jie1 nginx-1.4.2]# make && make install

[root@jie1 nginx-1.4.2]# vim /etc/rc.d/init.d/nginx

#!/bin/sh

#

# nginx - this script starts and stops the nginx daemon

#

# chkconfig:   - 85 15

# description:  Nginx is an HTTP(S) server, HTTP(S) reverse

#               proxy and IMAP/POP3 proxy server

# processname: nginx

# config:      /etc/nginx/nginx.conf

# config:      /etc/sysconfig/nginx

# pidfile:     /var/run/nginx.pid

# Source function library.

. /etc/rc.d/init.d/functions

# Source networking configuration.

. /etc/sysconfig/network

# Check that networking is up.

[ "$NETWORKING"= "no"] && exit0

nginx="/usr/sbin/nginx"

prog=$(basename$nginx)

NGINX_C/code>"/etc/nginx/nginx.conf"

[ -f /etc/sysconfig/nginx] && . /etc/sysconfig/nginx

lockfile=/var/lock/subsys/nginx

make_dirs() {

# make required directories

user=`nginx -V 2>&1 | grep"configure arguments:"| sed's/[^*]*--user=([^ ]*).*/1/g'-`

opti -V 2>&1 | grep'configure arguments:'`

foropt in$options; do

if[ `echo$opt | grep'.*-temp-path'` ]; then

value=`echo$opt | cut-d "="-f 2`

if[ ! -d "$value"]; then

# echo "creating" $value

mkdir-p $value && chown-R $user $value

fi

fi

done

}

start() {

[ -x $nginx ] || exit5

[ -f $NGINX_CONF_FILE ] || exit6

make_dirs

echo-n $"Starting $prog: "

daemon $nginx -c $NGINX_CONF_FILE

retval=$?

echo

[ $retval -eq0 ] && touch$lockfile

return$retval

}

stop() {

echo-n $"Stopping $prog: "

killproc $prog -QUIT

retval=$?

echo

[ $retval -eq0 ] && rm-f $lockfile

return$retval

}

restart() {

configtest || return$?

stop

sleep1

start

}

reload() {

configtest || return$?

echo-n $"Reloading $prog: "

killproc $nginx -HUP

RETVAL=$?

echo

}

force_reload() {

restart

}

configtest() {

$nginx -t -c $NGINX_CONF_FILE

}

rh_status() {

status $prog

}

rh_status_q() {

rh_status >/dev/null2>&1

}

case""in

start)

rh_status_q && exit0

;;

stop)

rh_status_q || exit0

;;

restart|configtest)

;;

reload)

rh_status_q || exit7

;;

force-reload)

force_reload

;;

status)

rh_status

;;

condrestart|try-restart)

rh_status_q || exit0

;;

*)

echo $"Usage:

exit2

esac

[root@jie1 nginx-1.4.2]# chmod +x /etc/rc.d/init.d/nginx

[root@jie1 nginx-1.4.2]# service nginx start

Starting nginx:                                            [  OK  ]

[root@jie1 nginx-1.4.2]# scp -p /etc/rc.d/init.d/nginx  172.16.22.2:/etc/rc.d/init.d    #把nginx的服务脚本复制到backup上，-p是保持原有的权限

[root@jie1 ~]# cd /etc/keepalived/

[root@jie1 keepalived]# vim keepalived.conf

global_defs {

   notification_email {

     root@localhost