Nginx + Tomcat + Memcache 实现session共享

1. Nginx 部署

1.上传源码包到服务器，解压安装 
下载地址：http://nginx.org/en/download.html 
 
2.安装依赖包 
yum install pcre pcre-devel openssl openssl-devel gcc gcc-c++ -y 
 
3.解压安装 
 
tar zxvf nginx-1.10.3.tar 
cd nginx-1.10.3 
编译（具体的模块可以自行添加） 
./configure --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module --with-http_gzip_static_module && make && make install 
 
4.添加PHP解析（前提是已经安装了PHP环境） 
 
编辑nginx.conf文件，将下面内容取消注释 
location ~ \.php$ { 
        root           html; 
        fastcgi_pass   127.0.0.1:9000; 
        fastcgi_index  index.php; 
        fastcgi_param  SCRIPT_FILENAME  /home/work/nginx/html$fastcgi_script_name; 
        include        fastcgi_params; 
    } 
 
5.启动 
/usr/local/nginx/sbin/nginx 
nginx默认没有启动脚本（可以自行编写一个） 
将/usr/local/nginx/sbin/nginx加在/etc/rc.local中，让其开机自启

2.Tomcat部署

1.上传源码包到服务器，直接解压安装 
下载地址：http://tomcat.apache.org/ 
 
2.解压到指定目录即可 
tar zxvf apache-tomcat-7.0.57.tar.gz -C /usr/local/ 
 
3.启动 
 
bin/startup.sh 
 
下面是一个启动脚本（直接执行 sh tomcatctrl.sh start|stop) 可以启停tomcat 
#!/bin/sh 
# Tomcat init script for Linux. 
# 
# description: The Apache Tomcat servlet/JSP container. 
#JAVA_HOME=/home/work/jdk/jdk1.8.0_20/ 
#CATALINA_HOME=/home/work/rap_tomcat8/ 
CATALINA_HOME=/home/work/tomcat_dianshang 
export JAVA_HOME CATALINA_HOME 
#exec $CATALINA_HOME/bin/catalina.sh $* 
case $1 in 
start) 
  sh $CATALINA_HOME/bin/catalina.sh start && tail -f logs/*;; 
stop) 
  sh $CATALINA_HOME/bin/catalina.sh stop ;; 
restart) 
  $CATALINA_HOME/bin/catalina.sh stop 
  sleep 5 
  sh $CATALINA_HOME/bin/catalina.sh start&& tail -f logs/*;; 
*) 
  echo "Usage: `basename $0` (start|stop|restart)" 
  exit 1 
  ;; 
esac

3.Memcache部署

1.上传源码包到服务器 
下载地址：http://memcached.org/downloads 
 
memcache需要libevent的支持，所以也需要下载libevent 
下载地址：http://libevent.org/ 
 
2.解压安装 
 
首先安装libevent 
tar -zxvf libevent-2.0.21-stable.tar.gz 
cd libevent-2.0.21-stable 
./configure --prefix=/usr/local/libevent 
make && make install 
 
接着安装memcache 
tar -zxvf memcached-1.5.4.tar.gz 
cd memcached-1.5.4 
./configure --prefix=/usr/local/memcached --with-libevent=/usr/local/libevent 
make && make install 
 
3.启动 
bin/memcached -p 11211 -m 64m -d 
 
4.查看端口和进程，确定是否启动成功

4.配置session共享

1.首先需要配置nginx，将请求转发到tomcat上面 
其中vhosts是我自己新建的，为了配置虚拟主机，管理方便 
cd /home/work/nginx/vhosts 
vim test.conf 
server{ 
listen    80 default; 
server_name dianshang_server; 
access_log  logs/dianshang.log  main; 
location / { 
        proxy_pass http://dianshang_server; 
    } 
} 
 
upstream dianshang_server{ 
     server 192.168.1.211:8091; 
} 
接着修改nginx.conf的配置，让其加载我们刚才配置的虚拟主机 
cd /home/work/nginx/conf 
vim nginx.conf 
include /home/work/nginx/vhosts/*.conf; 
 
在这贴一个nginx的主配置文件 
user work; 
worker_processes 8; 
worker_rlimit_nofile 65535; 
error_log  logs/error.log  info;  
pid        logs/nginx.pid; 
 
events { 
    use epoll; 
    worker_connections  20480; 
} 
 
 
http { 
    include       mime.types; 
    default_type  application/octet-stream; 
    log_format main '$remote_addr - $remote_user [$time_local]  ' 
                    '"$request" [$request_uri]  $status $body_bytes_sent $request_body  ' 
                    '"$http_referer"  "$http_user_agent" $http_x_forwarded_for  ';  
 
    sendfile        on; 
    keepalive_timeout  65; 
    client_body_timeout 15; 
    send_timeout 25;  
    client_max_body_size 8m; 
    server_tokens on; #隐藏nginx版本信息 
 
    server { 
 
        location ~* \.(.php|.html)$ { 
            root   html; 
            index  index.html index.htm index.php index.jsp; 
        } 
         
        location ~ \.php$ { 
            root           html; 
            fastcgi_pass   127.0.0.1:9000; 
            fastcgi_index  index.php; 
            fastcgi_param  SCRIPT_FILENAME  /home/work/nginx/html$fastcgi_script_name; 
            include        fastcgi_params; 
        } 
 
    } 
 
    fastcgi_connect_timeout 30; 
    fastcgi_send_timeout 30; 
    fastcgi_read_timeout 30; 
    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 1.1; 
    gzip_comp_level 2; 
    gzip_types text/plain  text/css application/x-javascript application/xml; 
 
    include /home/work/nginx/vhosts/*.conf; 
 
} 
 
2.tomcat配置 
编辑context.xml文件，追加下面的内容 
 <Manager className="de.javakaffee.web.msm.MemcachedBackupSessionManager" 
                     sticky="false" 
                     lockingMode="auto"  
                     memcachedNodes="n1:192.168.1.211:11211  n2:192.168.1.212:11211"  
                     requestUriIgnorePattern=".*\.(png|gif|jpg|css|js)$"       
                     sessionBackupAsync="false"       
                     sessionBackupTimeout="100"       
                   transcoderFactoryClass="de.javakaffee.web.msm.serializer.javolution.JavolutionTranscoderFactory" 
                     copyCollectionsForSerialization="false"  /> 
 
3.添加相应的包 
 
添加到tomcat中的lib下 
memcached-session-manager-1.8.1.jar 
memcached-session-manager-tc7-1.8.1.jar 
msm-flexjson-serializer-1.8.1.jar 
msm-javolution-serializer-1.8.1.jar 
msm-kryo-serializer-1.8.1.jar 
msm-serializer-benchmark-1.8.1.jar 
msm-xstream-serializer-1.8.1.jar 
 
4.新建一个获取session的页面 
在tomcat下的webapps/ROOT下新建个session.jsp 
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">   
<head>   
<title><%= application.getServerInfo() %></title>   
</head>   
<body>   
   当前的session <%=session.getId()%>   
当前主机 <%=request.getLocalAddr()%>   
</body>  
 
4.访问测试，如果session一样说明OK