centos6系统tomcat7实现session共享的几种办法

环境介绍：centos6.6

192.168.142.129     nginx，redis，memcached

192.168.142.130     tomcat7

192.168.142.131     tomcat7

一、基于nginx的ip_hash算法

1、安装配置环境

----------------------------tomcat安装配置---------------------------------
tar zxf jdk-8u121-linux-x64.gz -C /usr/local/
cd /usr/local/
ln -sv jdk1.8.0_121 java
vim /etc/profile.d/java.sh
export JAVA_HOME=/usr/local/java
export PATH=$JAVA_HOME/bin:$PATH
source /etc/profile.d/java.sh
java -version
tar zxf apache-tomcat-7.0.63.tar.gz -C /usr/local/

vim /usr/local/apache-tomcat-7.0.63/webapps/ROOT/index.jsp   #192.168.142.130的测试页面
<%@ page language="java" %>

  
  
    TomcatA.example.com
    


    <% session.setAttribute("example.com","example.com"); %>






      
        
Session ID
        
<%= session.getId() %>
      
      
        
Created on
        
<%= session.getCreationTime() %>
     
    

  


vim /usr/local/apache-tomcat-7.0.63/webapps/ROOT/index.jsp    #192.168.142.131的测试页面
<%@ page language="java" %>

  
  
    TomcatB.example.com
    


    <% session.setAttribute("example.com","example.com"); %>






      
        
Session ID
        
<%= session.getId() %>
      
      
        
Created on
        
<%= session.getCreationTime() %>
     
    

  


/usr/local/apache-tomcat-7.0.63/bin/startup.sh
--------------------------nginx安装配置-----------------------------------
vim /etc/yum.repos.d/epel.repo
[epel]
name=Extra Packages for Enterprise Linux 6 - $basearch
baseurl=http://archives.fedoraproject.org/pub/archive/epel/6/$basearch
enabled=1
gpgcheck=0
yum -y install nginx

vim /etc/nginx/conf.d/default.conf
upstream www.tomcat.org {
    ip_hash;
    server 192.168.142.130:8080;
    server 192.168.142.131:8080;
}
server {
    listen       80 default_server;
    listen       [::]:80 default_server;
    server_name  192.168.142.129;
    root         /usr/share/nginx/html;
    # Load configuration files for the default server block.
    include /etc/nginx/default.d/*.conf;
    location / {
        proxy_pass http://www.tomcat.org;
        index  index.jsp index.html index.htm;
        proxy_set_header   Host             $host;
        proxy_set_header   X-Real-IP        $remote_addr;
        proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;  
    }
    error_page 404 /404.html;
        location = /40x.html {
    }
    error_page 500 502 503 504 /50x.html;
        location = /50x.html {
    }
}


service nginx start

2、访问nginx测试session是否变化

客户端请求ip进行hash，再通过hash值选择后端server，多次刷新仍会调度到相同主机，测试成功。

二、基于redis实现session共享

1、安装配置

yum install redis -y
vim /etc/redis.conf
bind 192.168.142.130
daemonize yes           #支持后台运行

vim /etc/nginx/conf.d/default.conf
upstream www.tomcat.org {
  #  ip_hash;                                  #不能选择ip_hash算法
    server 192.168.142.130:8080;
    server 192.168.142.131:8080;
}
server {
    listen       80 default_server;
    listen       [::]:80 default_server;
    server_name  192.168.142.129;
    root         /usr/share/nginx/html;
    # Load configuration files for the default server block.
    include /etc/nginx/default.d/*.conf;
    location / {
        proxy_pass http://www.tomcat.org;
        index  index.jsp index.html index.htm;
        proxy_set_header   Host             $host;
        proxy_set_header   X-Real-IP        $remote_addr;
        proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;  
    }
    error_page 404 /404.html;
        location = /40x.html {
    }
    error_page 500 502 503 504 /50x.html;
        location = /50x.html {
    }
}

service redis start
service nginx restart
-------------------------------------tomcat------------------------------------
下载 commons-pool-1.6.jar；jedis-2.1.0.jar；tomcat-redis-session-manager-1.2-tomcat-7-java-7.jar到tomcat的/usr/local/apache-tomcat-7.0.63/lib目录下。

vim /usr/local/apache-tomcat-7.0.63/conf/context.xml

         host="192.168.142.129"             #redis主机地址
         port="6379" 
         database="0" 
         maxInactiveInterval="60"/>
cd /usr/local/apache-tomcat-7.0.63
./bin/shutdown.sh
./bin/startup.sh

2、访问nginx测试session是否变化

刷新后nginx调度到不同主机，但是session不变，测试成功。

三、基于memcached实现session共享

1、安装配置

yum install -y memcached

vim /etc/nginx/conf.d/default.conf
upstream www.tomcat.org {
   # ip_hash;                         #不能选择ip_hash算法
    server 192.168.142.130:8080;
    server 192.168.142.131:8080;
}
server {
    listen       80 default_server;
    listen       [::]:80 default_server;
    server_name  192.168.142.129;
    root         /usr/share/nginx/html;
    # Load configuration files for the default server block.
    include /etc/nginx/default.d/*.conf;
    location / {
        proxy_pass http://www.tomcat.org;
        index  index.jsp index.html index.htm;
        proxy_set_header   Host             $host;
        proxy_set_header   X-Real-IP        $remote_addr;
        proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;  
    }
    error_page 404 /404.html;
        location = /40x.html {
    }
    error_page 500 502 503 504 /50x.html;
        location = /50x.html {
    }
}

service memcached start
service nginx restart
---------------------------------tomcat相关配置---------------------------------
链接: https://pan.baidu.com/s/16RKKXrLkC6Jz_vfyihUUtA 
提取码: ttm5 
下载相关包到tomcat的/usr/local/apache-tomcat-7.0.63/lib目录下。
javolution-5.5.1.jar；kryo-1.03.jar；kryo-serializers-0.10.jar；memcached-2.5.jar
memcached-session-manager-1.5.1.jar；memcached-session-manager-tc7-1.5.1.jar
minlog-1.2.jar；msm-javolution-serializer-1.5.1.jar；msm-kryo-serializer-1.6.4.jar
reflectasm-0.9.jar；spymemcached-2.7.3.jar

vim /usr/local/apache-tomcat-7.0.63/conf/context.xml
      memcachedNodes="n1:192.168.142.129:11211"
     requestUriIgnorePattern=".*\.(png|gif|jpg|css|js|ico|jpeg|htm|html)$"
     sessionBackupTimeout="1800000"
     transcoderFactoryClass="de.javakaffee.web.msm.serializer.kryo.KryoTranscoderFactory" 
    />

2、访问nginx测试session是否变化

刷新后nginx调度到不同主机，但是session不变，测试成功。