Nginx反向代理多个Tomcat实现负载和session共享

Nginx反向代理多个Tomcat实现负载和session共享一、准备工作：1、安装服务所需的工具，把开发库和开发工具两个包用yum安装上就行了。

# yum groupinstall "Development Libraries" "Development Tools"2、安装nginx之前还要安装pcre-devel包# yum install pcre-devel二、安装Nginx1、Nginx下载地址：这个是nginx的官方网站。

为了实现session共享还得下载nginx的扩展模块nginx-upstream-jvm-route-master，下载地址：https:///tbje/nginx-upstream-jvm-route要想实现后面Tomcat的健康检测，还得下载模块nginx_upstream_check_module-master 下载地址：https:///yaoweibin/nginx_upstream_check_module/zip/master在这里所用的软件默认下载到/usr/local/src目录中2、安装之前要给nginx添加个用户：# groupadd nginx# useradd -g nginx nginx3、安装Nignx，并加入所需的扩展模块view sourceprint?01.# cd /usr/local/src02.解压那两个扩展模块包03.# unzip nginx-upstream-jvm-route-master.zip04.# unzip nginx_upstream_check_module-master.zip05.之后再来安装nginx06.# tar zxvf nginx-1.2.5.tar.gz07.# cd nginx-1.2.508.下面对nginx加入扩展模块09.# patch -p0< ../nginx-upstream-jvm-route-master/jvm_route.patch10.# patch -p1< ../nginx_upstream_check_module-master/check1.2.2+.patch (在nginx 1.2以上的版本都要用这个patch不然后会报错的）11.# ./configure --prefix=/usr/local/nginx \12.&gt; --user=nginx --group=nginx --with-http_ssl_module \13.&gt; --with-http_flv_module--with-http_stub_status_module \14.&gt; --with-http_gzip_static_module--http-proxy-temp-path=/var/tmp/nginx/proxy/ \15.&gt; --with-pcre \16.&gt;--add-module=/usr/local/src/nginx_upstream_check_module-m aster \17.&gt;--add-module=/usr/local/src/nginx-upstream-jvm-route-mast er18.如果没有什么报错的话在结尾处会看如下所示的内容：19.configuring additional modules20.addingmodule in/usr/local/src/nginx_upstream_check_module-master21.checking for ngx_http_upstream_check_module ... found22.+ ngx_http_upstream_check_module was configured23.addingmodule in/usr/local/src/nginx-upstream-jvm-route-master24.+ ngx_http_upstream_jvm_route_module was configured25.checking for PCRE library ... found26.checking for PCRE JIT support ... not found27.checking for OpenSSL library ... found28.checking for zlib library ... found29.creating objs/Makefile30.之后就可以make和make install了31.# make32.# make install这样Nginx就安装好了，下面给nginx制作一个启动脚本view sourceprint?001.# vim /etc/init.d/nginx002.内容如下：003.#!/bin/sh004.# nginx - this script starts and stops the nginx daemon 005.# chkconfig: - 85 15006.# description: Nginx is an HTTP(S) server, HTTP(S) reverse \007.# proxy and IMAP/POP3 proxy server008.# processname: nginx009.# config: /etc/nginx/nginx.conf010.# config: /etc/sysconfig/nginx011.# pidfile: /var/run/nginx.pid012.# Source function library.013.. /etc/rc.d/init.d/functions014.# Source networking configuration.015.. /etc/sysconfig/network016.# Check that networking is up.017.[ "$NETWORKING"= "no"]&& exit0018.nginx="/usr/local/nginx/sbin/nginx"019.prog=$(basename $nginx)020.NGINX_CONF_FILE="/usr/local/nginx/conf/nginx.conf" 021.[ -f /etc/sysconfig/nginx ]&& . /etc/sysconfig/nginx 022.lockfile=/var/lock/subsys/nginx023.make_dirs() {024.# make required directorieser=`nginx -V 2&gt;&1 | grep"configure arguments:"| sed's/[^*]*--user=\([^ ]*\).*/\1/g' -` 026.options=`$nginx -V 2&gt;&1 | grep'configure arguments:'`027.for opt in$options; do028.if[ `echo$opt | grep'.*-temp-path'` ]; then029.value=`echo$opt | cut-d "="-f 2`030.if[ ! -d "$value"]; then031.# echo "creating" $value032.mkdir-p $value && chown-R $user $value033.fi034.fi035.done036.}037.start() {038.[ -x $nginx ] || exit5039.[ -f $NGINX_CONF_FILE ] || exit6040.make_dirs041.echo-n $"Starting $prog: "042.daemon $nginx -c $NGINX_CONF_FILE043.retval=$?044.echo045.[ $retval -eq0 ]&& touch$lockfile046.return$retval047.}048.stop() {049.echo-n $"Stopping $prog: "050.killproc $prog -QUIT051.retval=$?052.echo053.[ $retval -eq0 ]&& rm-f $lockfile 054.return$retval055.}056.restart() {057.configtest || return$?058.stop059.sleep1060.start061.}062.reload() {063.configtest || return$?064.echo-n $"Reloading $prog: "065.killproc $nginx -HUP066.RETVAL=$?067.echo068.}069.force_reload() {070.restart071.}072.configtest() {073.$nginx -t -c $NGINX_CONF_FILE 074.}075.rh_status() {076.status $prog077.}078.rh_status_q() {079.rh_status &gt;/dev/null 2&gt;&1 080.}081.case"$1"in082.start)083.rh_status_q && exit0084.$1085.;;086.stop)087.rh_status_q || exit0088.$1089.;;090.restart|configtest)091.$1092.;;093.reload)094.rh_status_q || exit7095.$1096.;;097.force-reload)098.force_reload099.;;100.status)101.rh_status102.;;103.condrestart|try-restart)104.rh_status_q || exit0105.;;106.*)107.echo$"Usage: $0{start|stop|status|restart|condrestart|try-restart|reload |force-reload|configtest}"108.exit2109.esac110.111.保存后退出,并给它一个执行的权限。