Research on nginx Server Load balancer _ Session sharing

If you have not set up the nginx environment, please refer to my previous blog

Nginx Load Balancing

Lab Environment

Win7: tomcat6 + jdk6 + memcached

Linux: vmware9 + Ubuntu + jdk6 + nginx + tomcat6 + memcached

First, install memcached in windows.

Memcached-1.2.6-win32-bin.zip, 64-bit can also

Install memcached.exe-D install as a Windows Service

Memcached.exe-d start

Configure the memcached port, HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ memcached Server

ImagePath: "D: \ Java learning \ nginx Server Load balancer Configuration \ Windows Installation Package \ memcached.exe"-P 12345-M 128-D runservice

Among them, port 12345 is the memcached port, which must be used in Tomcat CONF/context .. XML

Configure CONF/context.. xml of Tomcat

The CONF/context. xml configuration methods for tomcat in Linux and Windows are the same <? XML version = '1. 0' encoding = 'utf-8'?> <Context> <watchedresource> WEB-INF/web. XML </watchedresource> <manager classname = "de. javakaffee. web. MSM. memcachedbackupsessionmanager "memcachednodes =" N1: 192.168.0.108: 12345 N2: 192.168.110.130: 12345 "requesturiignorepattern = ". */. (PNG | GIF | JPG | CSS | JS) $ "sessionbackupasync =" false "sessionbackuptimeout =" 100 "transcoderfactoryclass =" de. javakaffee. web. MSM. serializer. javolution. javolutiontranscoderfactory "copycollectionsforserialization =" false "/> </context>

Add five jar packages under Tomcat lib

Javolution-5.4.3.1.jar
Memcached-2.6.jar
Memcached-session-manager-1.5.1.jar
Memcached-session-manager-tc6-1.5.1.jar
Msm-javolution-serializer-1.5.1.jar

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~

Install memcached in Linux

Libevent-1.3.tar.gz

Memcached-1.2.2.tar.gz

Decompress the package using tar ~~

First install libevent

Go to the/usr/local/memcache Install files/libevent-1.3 unzipped libevent directory

# You can add parameters later. The installation path is installed in usr/local/lib by default if no parameter is added.

./Configure

# Compile

Make

# Installation

Make install

Check whether the installation is successful

Enter ls usr/local/bin/lib/*. So. If the following information is displayed, the installation is successful.

zhengx@zhengx-virtual-machine:/$ ls usr/local/lib/*.sousr/local/lib/libevent.so

Next, install memcached in Linux

Go to/usr/local/memcache Install files/libevent-1.3/memcached-1.2.2. Decompressed memcached directory

#-With-libevent =/usr/local/lib must be added; otherwise, the installation fails! /Usr/local/lib is the installation directory of libevent

./Configure-with-libevent =/usr/local/lib
Make
Make install

If an error cannot be created, run sudo chmod 777/usr/local-R.

How to start memcached

/Usr/local/bin/memcached-D-M 256-u root-l 192.168.1.5-P 12345-C 256-P/data/memcached. PID

Configure tomcat in Linux, the same as that in win7

Then http: // 192.168.110.130/T/in the browser will not change the session

Server IP Address:	192.168.0.108
Session ID:	AAB11F62F8E5631B35BD92F5230AD4D5-n1
Session Creation Time:	Thu Jul 11 20:56:57 CST 2013
Last session time:	Thu Jul 11 17:34:12 CST 2013
Session string:	Org. Apache. Catalina. session. standardsessionfacade @ fe30af

Refresh again. Check the session ID (session_id)

Server IP Address:	192.168.110.130
Session ID:	AAB11F62F8E5631B35BD92F5230AD4D5-n1
Session Creation Time:	Thu Jul 11 20:56:57 CST 2013
Last session time:	Thu Jul 11 20:56:59 CST 2013
Session string:	Org. Apache. Catalina. session. standardsessionfacade @ 136e7f3

In session. setattribute (Key, value) in worker AT1 ). In tomcat2 session. getattribute (key); Test

Server IP Address:	192.168.0.108
Session ID:	7bf5b9dfcb6f35a49ba9fa9ef3813434-n1
Get value from session:	I'm Tomcat on Windows.

Note the server startup sequence: Start nginx first, and then tomcat1 and tomcat2.

Server IP Address:	192.168.110.130
Session ID:	7bf5b9dfcb6f35a49ba9fa9ef3813434-n1
Session Creation Time:	Tue Jul 16 16:43:23 CST 2013
Last session time:	Tue Jul 16 16:45:29 CST 2013
Session string:	Org. Apache. Catalina. session. standardsessionfacade @ 1162cdf
Get value from session:	I'm Tomcat on Windows.