Nginx+resin session问题解决-nginx session

测试环境：

server1 服务器上安装了 nginx + resin

server2 服务器上只安装了 resin

server1 IP 地址： 192.168.6.121

server2 IP 地址： 192.168.6.162

安装步骤：

1. 在server1 上安装配置 nginx + nginx_upstream_jvm_route

shell $> wget -c http://sysoev.ru/nginx/nginx-0.7.61.tar.gz

shell $> svn checkout http://nginx-upstream-jvm-route.googlecode.com/svn/trunk/ nginx-upstream-jvm-route-read-only

shell $> tar zxvf nginx-0.7.61

shell $> cd nginx-0.7.61

shell $> patch -p0 < ../nginx-upstream-jvm-route-read-only/jvm_route.patch

shell $> useradd www

shell $> ./configure --user=www --group=www --prefix=/usr/local/webserver/nginx --with-http_stub_status_module --with-http_ssl_module --add-module=/root/nginx-upstream-jvm-route-read-only

shell $> make

shell $> make install

2.分别在两台机器上安装 resin

### 修改环境变量###

shell $> vim /etc/profile

###在 umask 022 下填加以下###

JAVA_HOME=/usr/lib/jvm/java-6-sun
export JAVA_HOME

JRE_HOME="${JAVA_HOME}"/jre
export JRE_HOME

CLASSPATH=.:"${JAVA_HOME}"/lib/tools.jar:"${JAVA_HOME}"/lib/dt.jar${RESIN_HOME}"/lib/resin.jar:"${CLASSPATH}
export CLASSPATH

RESIN_HOME=/usr/local/resin
export RESIN_HOME
PATH="${JAVA_HOME}"/bin:"${PATH}"
export PATH

shell $> wget -c http://www.caucho.com/download/resin-3.1.9.tar.gz

shell $> tar zxvf resin-3.1.9.tar.gz

shell $> cd resin-3.1.9

shell $> ./configure --prefix=/usr/local/resin

shell $> make

shell $> make install

3. 配置两台机器的 resin

shell $> cd /usr/local/resin

shell $> cd conf

shell $> vim resin.conf

## 查找 <http address="*" port="8080"/>

## 注释掉

## 查找 <server id="" address="127.0.0.1" port="6800">

## 替换成

<http id="" port="8080"/>
    </server>

<http id="" port="8081"/>
    </server>
shell $> cd /usr/local/resin/webapps/ROOT/

shell $> mv index.jsp index.jsp.bak

shell $> vim index.jsp

## 填入以下内容

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
%>

<html>
<head>
    </head>
      <body>
        121

<br />
       <%out.print(request.getSession()) ;%>

<br />
        <%out.println(request.getHeader("Cookie")); %>

</body>
</html>

###重启 resin 服务#####

### server1 服务器#####

shell $> /usr/local/resin/bin/httpd.sh -server a start

###注意如果没修改环境变量会报错

### server2 服务器 ####

shell $> /usr/local/resin/bin/httpd.sh -server b start

### 注意的是 server2 服务器只启动 server_id b ###

4.整合 ngxin resin

shell $> cd /usr/local/nginx/conf

shell $> mv nginx.conf nginx.bak

shell $> vim nginx.conf

## 以下是配置 ###

user www www;

worker_processes 4;

error_log logs/nginx_error.log crit;

pid /usr/local/nginx/nginx.pid;

#Specifies the value for maximum file descriptors that can be opened by this process.
worker_rlimit_nofile 51200;

events
{
use epoll;
worker_connections 2048;
}

http
{
upstream backend {
server 192.168.6.121:8080 srun_id=a;

#### 这里 srun_id=a 对应的是 server1 resin 配置里的 server id="a"
server 192.168.6.162:8081 srun_id=b;

#### 这里 srun_id=b 对应的是 server2 resin 配置里的 server id="b"

jvm_route $cookie_JSESSIONID|sessionid;
}

include mime.types;
default_type application/octet-stream;

#charset gb2312;
charset UTF-8;

server_names_hash_bucket_size 128;
client_header_buffer_size 32k;
large_client_header_buffers 4 32k;
client_max_body_size 20m;
limit_rate 1024k;

sendfile on;
tcp_nopush on;

keepalive_timeout 60;

tcp_nodelay on;

fastcgi_connect_timeout 300;
fastcgi_send_timeout 300;
fastcgi_read_timeout 300;
fastcgi_buffer_size 64k;
fastcgi_buffers 4 64k;
fastcgi_busy_buffers_size 128k;
fastcgi_temp_file_write_size 128k;

gzip on;
#gzip_min_length 1k;
gzip_buffers 4 16k;
gzip_http_version 1.0;
gzip_comp_level 2;

gzip_types text/plain application/x-javascript text/css application/xml;
gzip_vary on;

#limit_zone crawler $binary_remote_addr 10m;

server
{
   listen       80;
   server_name 192.168.6.121;
   index index.html index.htm index.jsp;
   root /var/www;

   location ~ .*\.jsp$
   {
     proxy_pass http://backend;
     proxy_redirect    off;
     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
     proxy_set_header X-Real-IP $remote_addr;
     proxy_set_header Host $http_host;
   }

   location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$
   {
     expires      30d;
   }

   location ~ .*\.(js|css)?$
   {
     expires      1h;
   }

   location /stu {
     stub_status on;
     access_log   off;
   }
log_format access '$remote_addr - $remote_user [$time_local] "$request" '
             '$status $body_bytes_sent "$http_referer" '
             '"$http_user_agent" $http_x_forwarded_for';
# access_log off;
}

}

5.测试，打开浏览器，输入 http://192.168.6.121/index.jsp

session 显示 aXXXXX 访问的是 121 服务器也就是 server1,因为是***次访问所以Cookie 没有获得，刷新一下看他是否轮询会访问到 162 server2.

刷新 N 遍后仍然是 121，也就是补丁起作用了，cookie 值也获得了，为了测试，我又打开了 “火狐浏览器”（因为session 和 cookie问题所以从新打开别的浏览器），输入网址：

显示的是 162 ，session 值是以 bXXX 开头的，刷新 N遍后：

仍然是 162 server 2服务器！！大家测试的时候如果有疑问可一把 nginx 配置文件的

srun_id=a srun_id=b 去掉，然后在访问，就会知道页面是轮询访问得了！！

我上传的补丁清在 linux 系统上解压，因为 51cto 不支持 gz格式，所以我就改了一后缀名，在linux 系统上执行

shell $> tar zxvf nginx-upstream-jvm-route-read-only.rar

就可以了！

tomcat 的解决方法 README 上有：

1.For resin
upstream backend {
    server 192.168.0.100 srun_id=a;
    server 192.168.0.101 srun_id=b;
    server 192.168.0.102 srun_id=c;
    server 192.168.0.103 srun_id=d;

    jvm_route $cookie_JSESSIONID|sessionid;
}
2.For tomcat
upstream backend {
    server 192.168.0.100 srun_id=a;
    server 192.168.0.101 srun_id=b;
    server 192.168.0.102 srun_id=c;
    server 192.168.0.103 srun_id=d;

jvm_route $cookie_JSESSIONID|sessionid reverse;
}