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tomcat session会话保持实验-之Nginx+tomcat+memcached

日期：2017-02-14点击：534收藏

tomcat session会话保持实验-之Nginx+tomcat+memcached

实验要求

1、nginx+tomcat 负载均衡

2、memcached 会话保持

实验拓扑

ip网络规划

Nginxnode2:172.16.76.20

tomcatAnode3:172.16.76.30 memcached

tomcatBnode4:172.16.76.40 memcached

基础配置

node2

[root@node2~]# yum install nginx –y

node3

[root@node3~]# yum install tomcat –y [root@node3~]# cd /var/lib/tomcat/webapps/ [root@node3 webapps]# mkdir -pv test/{claess,lib,WEB-INF [root@node3 webapps]#vim test/index.jsp <%@ page language="java" %>       <html>        <head><title>TomcatA</title></head>     <body>     <h1><fontcolor="red">TomcatA.linuxinfo.top</font></h1>      <tablealign="centre" border="1">        <tr>      <td>SessionID</td>     <%session.setAttribute("linuxinfo.top","linuxinfo.top");%>        <td><%=session.getId() %></td>         </tr>          <tr>        <td>Createdon</td>        <td><%=session.getCreationTime() %></td>          </tr>          </table>        </body>     </html> [root@node3 ~]# systemctl restart tomcat

node4

[root@node4~]# yum install tomcat –y [root@node4~]# cd /var/lib/tomcat/webapps/ [root@node4 webapps]# mkdir -pv test/{claess,lib,WEB-INF [root@node4 webapps]#vim test/index.jsp <%@ page language="java" %>    <html>      <head><title>TomcatB</title></head>       <body>     <h1><font color="blue">TomcatA.linuxinfo.top</font></h1>       <tablealign="centre" border="1">      <tr>       <td>SessionID</td>     <%session.setAttribute("linuxinfo.top","linuxinfo.top");%>         <td><%=session.getId() %></td>        </tr>       <tr>        <td>Createdon</td>          <td><%=session.getCreationTime() %></td>         </tr>        </table>      </body>     </html> [root@node4 ~]# systemctl restart tomcat

Nginx配置

root@node2~]# cat /etc/nginx/nginx.conf

user nginx; worker_processes auto; error_log /var/log/nginx/error.log; pid /run/nginx.pid;   include /usr/share/nginx/modules/*.conf; events {     worker_connections 1024; } http {     log_format main '$remote_addr - $remote_user [$time_local] "$request" '                      '$status$body_bytes_sent "$http_referer" '                     '"$http_user_agent" "$http_x_forwarded_for"';     upstream tomcatser {   #服务器组配置负载均衡               server172.16.76.30:8080;               server172.16.76.40:8080;      #       ip_hash }     access_log  /var/log/nginx/access.log  main;       sendfile            on;     tcp_nopush          on;     tcp_nodelay         on;     keepalive_timeout   65;     types_hash_max_size 2048;       include             /etc/nginx/mime.types;     default_type        application/octet-stream;          include/etc/nginx/conf.d/*.conf;     server {         listen       80default_server;         listen       [::]:80 default_server;         server_name  _;         root         /usr/share/nginx/html;         # Load configurationfiles for the default server block.         include/etc/nginx/default.d/*.conf;                 #location 代理至后端服务器组；负载均衡       location / {                        proxy_pass http://tomcatser;      location ~* (\.jsp|do)${                  proxy_passhttp://tomcatser;     }         }              error_page 404 /404.html;             location =/40x.html {         }         error_page 500 502 503504 /50x.html;             location =/50x.html {         } } [root@node2 ~]# systemctlrestart nginx

memcached

下载如下jar文件至各tomcat节点的tomcat安装目录下的lib目录中，其中的${version}要换成你所需要的版本号，tc${6,7,8}要换成与tomcat版本相同的版本号。

memcached-session-manager-${version}.jar

memcached-session-manager-tc${6,7,8}-${version}.jar

spymemcached-${version}.jar

msm-javolution-serializer-${version}.jar

javolution-${version}.jar

本实验所用jar包已上传（仅供实验版本），各位可以去下面链接下载：

http://down.51cto.com/3363989

或者到官方下载（这个应该被。。。）

memcached-session-manager项目地址，https://code.google.com/archive/p/memcached-session-manager/downloads

本实验环境版本如下：

[root@node3~]# tomcat version

Server version: Apache Tomcat/7.0.69

Server built: Nov 6 201601:55:51 UTC

Server number: 7.0.69.0

OS Name: Linux

OS Version: 3.10.0-327.el7.x86_64

Architecture: amd64

JVM Version: 1.8.0_121-b13

JVM Vendor: OracleCorporation

安装memcached

[root@node3~]# yum install memcached –y

[root@node4~]# yum install memcached -y

tomcat

ndoe3

1、[root@node3 ~]# vim /etc/tomcat/server.xml

分别在两个tomcat上的某host上定义一个用于测试的context容器，并在其中创建一个会话管理器，如下所示：

<ManagerclassName="de.javakaffee.web.msm.MemcachedBackupSessionManager"

memcachedNodes="n1:172.16.100.9:11211,n2:172.16.100.10:11211"

failoverNodes="n1"

requestUriIgnorePattern=".*\.(ico|png|gif|jpg|css|js)$" transcoderFactoryClass="de.javakaffee.web.msm.serializer.javolution.JavolutionTranscoderFactory"/>

</Context>

2、在<Engine name="Catalina"defaultHost="localhost"> 中添加jvmRoute="TomcatA"即

<Enginename="Catalina" defaultHost="localhost"jvmRoute="TomcatA">

#tomcatB主机则将此修改为tomcatB

node4：

1、将node3 tomcat配置文件server.xml拷贝一份至本机；

[root@node4~]# cd /etc/tomcat/

[root@node4 tomcat]# scp172.16.76.30:/etc/tomcat/server.xml .

2、注：修改 <Engine> 中jvmRoute=TomcatB；

重启所有服务

[root@node2~]# systemctl restart nginx

[root@node3~]# systemctl restart tomcat