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问答 Nginx+Tomcat配置集群session共享
发布于 2550天前 作者 Hamming 1977 次浏览 复制 上一个帖子 下一个帖子
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为什么选择Nginx?
Nginx 可以在大多数 UnixLinux OS 上编译运行,并有 Windows 移植版。 Nginx 的1.4.0稳定版已经于2013年4月24日发布,一般情况下,对于新建站点,建议使用最新稳定版作为生产版本,已有站点的升级急迫性不高。Nginx 的源代码使用 2-clause BSD-like license。
Nginx 是一个很强大的高性能Web和反向代理服务器,它具有很多非常优越的特性:
在连接高并发的情况下,Nginx是Apache服务器不错的替代品:Nginx在美国是做虚拟主机生意的老板们经常选择的软件平台之一。能够支持高达 50,000 个并发连接数的响应,感谢Nginx为我们选择了 epoll and kqueue作为开发模型。
1、下载地址
http://nginx.org/en/download.html ,这里我们推荐下载稳定版(stable versions),本文采用nginx/Windows-1.12.0。
2、目录结构
Nginx-
| conf 配置目录
| contrib
| docs 文档目录
| logs 日志目录
| temp 临时文件目录
| html 静态页面目录
|_ nginx.exe 主程序
window下安装Nginx极其简单,解压缩到一个无空格的英文目录即可(个人习惯,担心中文出问题),双击nginx启动,这里我安装到:D:\nginx目录,下面涉及到的tomcat也安装在此目录。

start nginx
nginx -s stop
nginx -s quit

3、nginx.conf配置
Nginx配置文件默认在conf目录,主要配置文件为nginx.conf

#user  nobody;  
worker_processes  1;  
  
#error_log  logs/error.log;  
#error_log  logs/error.log  notice;  
#error_log  logs/error.log  info;  
  
#pid        logs/nginx.pid;  
  
  
events {  
    worker_connections  1024;  
}  
  
  
http {  
    include       mime.types;  
    default_type  application/octet-stream;  
  
    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '  
    #                  '$status $body_bytes_sent "$http_referer" '  
    #                  '"$http_user_agent" "$http_x_forwarded_for"';  
  
    #access_log  logs/access.log  main;  
  
    sendfile        on;  
    #tcp_nopush     on;  
  
    #keepalive_timeout  0;  
    keepalive_timeout  65;  
  
    #gzip  on;  
  
    upstream suroot{  
        server 127.0.0.1:8090 max_fails=2 fail_timeout=30s;  
        server 127.0.0.1:9091 max_fails=2 fail_timeout=30s;  
    }  
      
    server {  
        listen       80;  
        server_name  localhost;  
  
        #charset koi8-r;  
  
        #access_log  logs/host.access.log  main;  
  
        location / {  
            root   html;  
            index  index.html index.htm index.jsp login.jsp; #定义首页索引文件的名称  
            proxy_pass http://suroot/;#请求转向suroot定义的服务器列表  
            #以下是一些反向代理的配置可删除.  
            proxy_redirect off;  
            proxy_set_header   Host $host;  
            proxy_set_header   X-Real-IP $remote_addr;  
            proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;  
            client_max_body_size   10m;#允许客户端请求的最大单文件字节数  
            client_body_buffer_size   128k;#缓冲区代理缓冲用户端请求的最大字节数,  
            proxy_connect_timeout   600;#nginx跟后端服务器连接超时时间(代理连接超时)  
            proxy_send_timeout   600; #后端服务器数据回传时间(代理发送超时)  
            proxy_read_timeout   600; #连接成功后,后端服务器响应时间(代理接收超时)  
            proxy_buffer_size   8k; #设置代理服务器(nginx)保存用户头信息的缓冲区大小  
            proxy_buffers   4 64k;#proxy_buffers缓冲区,网页平均在32k以下的话,这样设置  
            proxy_busy_buffers_size   128k;#高负荷下缓冲大小(proxy_buffers*2)  
            proxy_temp_file_write_size  128k;#设定缓存文件夹大小,大于这个值,将从upstream服务器传  
        }  
  
        #error_page  404              /404.html;  
  
        # redirect server error pages to the static page /50x.html  
        #  
        error_page   500 502 503 504  /50x.html;  
        location = /50x.html {  
            root   html;  
        }  
  
        # proxy the PHP scripts to Apache listening on 127.0.0.1:80  
        #  
        #location ~ \.php$ {  
        #    proxy_pass   http://127.0.0.1;  
        #}  
  
        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000  
        #  
        #location ~ \.php$ {  
        #    root           html;  
        #    fastcgi_pass   127.0.0.1:9000;  
        #    fastcgi_index  index.php;  
        #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;  
        #    include        fastcgi_params;  
        #}  
  
        # deny access to .htaccess files, if Apache's document root  
        # concurs with nginx's one  
        #  
        #location ~ /\.ht {  
        #    deny  all;  
        #}  
    }  
  
  
    # another virtual host using mix of IP-, name-, and port-based configuration  
    #  
    #server {  
    #    listen       8000;  
    #    listen       somename:8080;  
    #    server_name  somename  alias  another.alias;  
  
    #    location / {  
    #        root   html;  
    #        index  index.html index.htm;  
    #    }  
    #}  
  
  
    # HTTPS server  
    #  
    #server {  
    #    listen       443 ssl;  
    #    server_name  localhost;  
  
    #    ssl_certificate      cert.pem;  
    #    ssl_certificate_key  cert.key;  
  
    #    ssl_session_cache    shared:SSL:1m;  
    #    ssl_session_timeout  5m;  
  
    #    ssl_ciphers  HIGH:!aNULL:!MD5;  
    #    ssl_prefer_server_ciphers  on;  
  
    #    location / {  
    #        root   html;  
    #        index  index.html index.htm;  
    #    }  
    #}  
  
}  

4、Tomcat配置
对于tomcat大家都很熟悉,只需要修改server.xml配置文件即可;
这里我们以apache-tomcat-8.5.5为例,分别在server目录,解压缩并命名为:apache-tomcat-8.5.5-8090、apache-tomcat-8.5.5-8091
第一处端口修改:
Xml代码 :

<!--  修改port端口:8006 俩个tomcat不能重复,端口随意,别太小-->    
<Server port="8006" shutdown="SHUTDOWN"> 

第二处端口修改:
Xml代码 :

<!-- port="8090" tomcat监听端口,随意设置,别太小 -->    
<Connector port="8090" protocol="HTTP/1.1"     
               connectionTimeout="20000"     
               redirectPort="8443" />  

第三处端口修改:

<Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />  

第四处session共享配置

<!-- 
<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/> 
-->  
  <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"  
           channelSendOptions="6">  
  
    <Manager className="org.apache.catalina.ha.session.BackupManager"  
             expireSessionsOnShutdown="false"  
             notifyListenersOnReplication="true"  
             mapSendOptions="6"/>  
    <!--  
    <Manager className="org.apache.catalina.ha.session.DeltaManager"  
             expireSessionsOnShutdown="false"  
             notifyListenersOnReplication="true"/>  
    -->  
    <Channel className="org.apache.catalina.tribes.group.GroupChannel">  
      <Membership className="org.apache.catalina.tribes.membership.McastService"  
                  address="228.0.0.4"  
                  port="45564"  
                  frequency="500"  
                  dropTime="3000"/>  
      <Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"  
                address="auto"  
                port="5000"  
                selectorTimeout="100"  
                maxThreads="6"/>  
  
      <Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter">  
        <Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/>  
      </Sender>  
      <Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/>  
      <Interceptor className="org.apache.catalina.tribes.group.interceptors.MessageDispatchInterceptor"/>  
      <Interceptor className="org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor"/>  
    </Channel>  
  
    <Valve className="org.apache.catalina.ha.tcp.ReplicationValve"  
           filter=".*\.gif|.*\.js|.*\.jpeg|.*\.jpg|.*\.png|.*\.htm|.*\.html|.*\.css|.*\.txt"/>  
  
    <Deployer className="org.apache.catalina.ha.deploy.FarmWarDeployer"  
              tempDir="/tmp/war-temp/"  
              deployDir="/tmp/war-deploy/"  
              watchDir="/tmp/war-listen/"  
              watchEnabled="false"/>  
  
    <ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/>  
  </Cluster>

官方文档地址:http://tomcat.apache.org/tomcat-8.5-doc/cluster-howto.html
其次验证tomcat,启动两个tomcat,不出现端口冲突即为成功。

Java项目web.xml需要配置加入

<distributable/> 

验证页面session是否相同

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>  
<%  
  String path = request.getContextPath();  
  String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";  
%>  
  
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">  
<html>  
<head>  
  <base href="<%=basePath%>">  
  
  <title>My JSP 'index.jsp' starting page</title>  
  <meta http-equiv="pragma" content="no-cache">  
  <meta http-equiv="cache-control" content="no-cache">  
  <meta http-equiv="expires" content="0">  
  <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">  
  <meta http-equiv="description" content="This is my page">  
  <!--  
  <link rel="stylesheet" type="text/css" href="styles.css">  
  -->  
</head>  
  
<body>  
  SessionID:<%=session.getId()%>  
  <BR>  
  SessionIP:<%=request.getServerName()%>  
  <BR>  
  SessionPort:<%=request.getServerPort()%>  
  <%  
    out.println("This is Tomcat Server 11111");  
  %>  
</body>  
</html> 

参考文章地址:http://www.jianshu.com/p/47a94a3bff34
我的博客地址http://blog.csdn.net/yhm_brave/article/details/71056862

2 回复

NutzWk 3.x /4.x 最新版,启用shiro的二级缓存配置,即启用redis二级缓存,不需要再通过tomcat来做session同步了,性能也提升不少。

redis 占内存太多

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