centos6系统tomcat7实现session共享的几种办法 _session

智者不为愚者谋，勇者不为怯者死。这篇文章主要讲述centos6系统tomcat7实现session共享的几种办法相关的知识，希望能为你提供帮助。
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" %>
< html>
< head> < title> TomcatA< /title> < /head>
< body>
< h1> < font color="red"> TomcatA.example.com< /h1>
< table align="centre" border="1">
< tr>
< td> Session ID< /td>
< % session.setAttribute("example.com","example.com"); %>
< td> < %= session.getId() %> < /td>
< /tr>
< tr>
< td> Created on< /td>
< td> < %= session.getCreationTime() %> < /td>
< /tr>
< /table>
< /body>
< /html>

vim /usr/local/apache-tomcat-7.0.63/webapps/ROOT/index.jsp#192.168.142.131的测试页面
< %@ page language="java" %>
< html>
< head> < title> TomcatB< /title> < /head>
< body>
< h1> < font color="blue"> TomcatB.example.com< /h1>
< table align="centre" border="1">
< tr>
< td> Session ID< /td>
< % session.setAttribute("example.com","example.com"); %>
< td> < %= session.getId() %> < /td>
< /tr>
< tr>
< td> Created on< /td>
< td> < %= session.getCreationTime() %> < /td>
< /tr>
< /table>
< /body>
< /html>

/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
listen80 default_server;
listen[::]:80 default_server;
server_name192.168.142.129;
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;
indexindex.jsp index.html index.htm;
proxy_set_headerHost$host;
proxy_set_headerX-Real-IP$remote_addr;
proxy_set_headerX-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
listen80 default_server;
listen[::]:80 default_server;
server_name192.168.142.129;
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;
indexindex.jsp index.html index.htm;
proxy_set_headerHost$host;
proxy_set_headerX-Real-IP$remote_addr;
proxy_set_headerX-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------------------------------------
链接: https://pan.baidu.com/s/16RKKXrLkC6Jz_vfyihUUtA
提取码: ttm5
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
< Valve className="com.radiadesign.catalina.session.RedisSessionHandlerValve" />
< Manager className="com.radiadesign.catalina.session.RedisSessionManager"
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
【centos6系统tomcat7实现session共享的几种办法】
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
listen80 default_server;
listen[::]:80 default_server;
server_name192.168.142.129;
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;
indexindex.jsp index.html index.htm;
proxy_set_headerHost$host;
proxy_set_headerX-Real-IP$remote_addr;
proxy_set_headerX-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
< Manager className="de.javakaffee.web.msm.MemcachedBackupSessionManager"
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"
/>