tomcat+memcached实现sessions共享

098098 · 发表于 2015-11-26 09:00:36

以前公司就用到这个、也简单写过一个文档、后来发现写的不够详细以至于别人看到我的文档、总是不知所措、这次利用空闲时间写一份详细的、共享给各位刚接触这个技术的小伙伴！！！
实验环境：虚拟机centOS6.6_x89_64  Minal模式
软件版本：apache-tomcat-7.0.64.tar.gz
      jdk-7u45-linux-x64.tar.gz
      libevent-2.0.21-stable.tar.gz
      memcached-1.4.21.tar.gz
      以及和tomcat版本相对经的jar包

实验前先关闭seLinux和防火墙
setenfor 0
service iptables stop

本次实验还会用到一些基础依赖包如果觉得没安装好可以运行一下命令防止后面编译报错
yum groupinstall -y Development tools

好了  不废话  Go!Go!Go!

1、所有文件包都放在/usr/local/src/
[iyunv@test13 ~]# cd /usr/local/src/
[iyunv@test13 src]# ll
总用量 144688
-rw-r--r-- 1 root root 8858187 11月 24 19:39 apache-tomcat-7.0.64.tar.gz
-rw-r--r-- 1 root root 138094686 11月 24 19:40 jdk-7u45-linux-x64.tar.gz
-rw-r--r-- 1 root root 850772 11月 24 19:39 libevent-2.0.21-stable.tar.gz
-rw-r--r-- 1 root root 345892 11月 24 19:39 memcached-1.4.21.tar.gz
drwxr-xr-x 2 root root    4096 11月 24 19:40 serssion-jar

2、安装java并配置环境变量、检测jdk版本
[iyunv@test13 src]# tar zxvf jdk-7u45-linux-x64.tar.gz
[iyunv@test13 src]# mv jdk1.7.0_45/ /usr/local/jdk7
[iyunv@test13 src]# vim /etc/profile
..........................................................
export JAVA_HOME=/usr/local/jdk7
export JRE_HOME=/usr/local/jdk7
export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH
export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib
..........................................................
如下图所示：
QQ截图20151126085933.png

[iyunv@test13 src]# source /etc/profile
[iyunv@test13 src]# java -version
java version "1.7.0_45"
Java(TM) SE Runtime Environment (build 1.7.0_45-b18)
Java HotSpot(TM) 64-Bit Server VM (build 24.45-b08, mixed mode)

3、安装tomcat
[iyunv@test13 src]# tar zxvf apache-tomcat-7.0.64.tar.gz
[iyunv@test13 src]# mv apache-tomcat-7.0.64 /usr/local/tomcat
[iyunv@test13 src]# vim /usr/local/tomcat/bin/catalina.sh
..........................................................
JAVA_HOME=/usr/local/jdk7
CATALINA_HOME=/usr/local/tomcat
JAVA_OPTS="-server -XX:PermSize=128M -XX:MaxPermSize=512M -Xms1024m -Xmx1024m -Duser.timezone=Asia/Shanghai -Djava.awt.headless=true"
..........................................................
如下图所示：
QQ截图20151126085942.png

[iyunv@test13 src]# /usr/local/tomcat/bin/startup.sh //启动tomcat
Using CATALINA_BASE: /usr/local/tomcat
Using CATALINA_HOME: /usr/local/tomcat
Using CATALINA_TMPDIR: /usr/local/tomcat/temp
Using JRE_HOME:       /usr/local/jdk7
Using CLASSPATH:    /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar
Tomcat started.
[iyunv@test13 src]# ps aux |grep tomcat  //可以看到tomcat已经启动成功

root    1237  2.0 73.8 2335144 174376 pts/0  Sl 21:05 0:04 /usr/local/jdk7/bin/java -Djava.util.logging.config.file=/usr/local/tomcat/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -server -XX:PermSize=128M -XX:MaxPermSize=512M -Xms1024m -Xmx1024m -Duser.timezone=Asia/Shanghai -Djava.awt.headless=true -Djava.endorsed.dirs=/usr/local/tomcat/endorsed -classpath /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar -Dcatalina.base=/usr/local/tomcat -Dcatalina.home=/usr/local/tomcat -Djava.io.tmpdir=/usr/local/tomcat/temp org.apache.catalina.startup.Bootstrap start
root    1271  0.0  0.3 103248 880 pts/0 S+ 21:09 0:00 grep tomcat

[iyunv@test13 src]# curl localhost:8080 //测试tomcat可以看到没有问题

<!DOCTYPE html>

<html lang="en">
<head>
      <title>Apache Tomcat/7.0.64</title>
      <link href="favicon.ico" rel="icon" type="image/x-icon" />
      <link href="favicon.ico" rel="shortcut icon" type="image/x-icon" />
      <link href="tomcat.css" rel="stylesheet" type="text/css" />
</head>

4、编译安装memcached
[iyunv@test13 src]# cp serssion-jar/* /usr/local/tomcat/lib/ //将msm依赖的jar包放到$TOMCAT_HOME/lib下

[iyunv@test13 src]# tar zxvf libevent-2.0.21-stable.tar.gz
[iyunv@test13 src]# cd libevent-2.0.21-stable
[iyunv@test13 libevent-2.0.21-stable]# ./configure --prefix=/usr/local/libevent
[iyunv@test13 libevent-2.0.21-stable]# make && make install
#每次编译最好用 echo $?  查看下编译是否成功

[iyunv@test13 libevent-2.0.21-stable]# cd ..
[iyunv@test13 src]# tar zxvf memcached-1.4.21.tar.gz
[iyunv@test13 src]# cd memcached-1.4.21
[iyunv@test13 memcached-1.4.21]# ./configure --prefix=/usr/local/memcached --with-libevent=/usr/local/libevent
[iyunv@test13 memcached-1.4.21]# make && make install
[iyunv@test13 memcached-1.4.21]# echo $?
0

5、修改tomcat的配置文件
[iyunv@test13 memcached-1.4.21]# cd /usr/local/tomcat/
[iyunv@test13 tomcat]# vim conf/server.xml
..........................................................
<Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1">
#如果要配置通一台机器上的多个tomcat、那么jvmRoute的标签要改成不同的
..........................................................
如图所示：
QQ截图20151126085952.png

[iyunv@test13 tomcat]# vim conf/context.xml
..........................................................
<Manager className="de.javakaffee.web.msm.MemcachedBackupSessionManager"
memcachedNodes="n1:10.164.24.246:11211,n2:10.164.4.154:11211"
sticky="false"
sessionBackupAsync="false"
lockingMode="uriPattern:/path1|/path2"
requestUriIgnorePattern=".*\.(ico|png|gif|jpg|css|js)$" transcoderFactoryClass="de.javakaffee.web.msm.serializer.kryo.KryoTranscoderFactory"
/>
#memcachedNodes="n1:10.164.24.246:11211,n2:10.164.4.154:11211"
#这个地方如果是一台mem服务器那么就写n1:IP:PORT 如果多台就n1..,n2..,n3..
..........................................................
如图所示这里以一台为例：
QQ截图20151126090000.png

6、启动memcached
[iyunv@test13 tomcat]# cd /usr/local/memcached/
[iyunv@test13 memcached]# bin/memcached -d -m 256 -p 11211 -u root

#重启tomcat
[iyunv@test13 memcached]# ps aux |grep tomcat
root    1237  0.4 54.6 2336172 129032 pts/0  Sl 21:05 0:08 /usr/local/jdk7/bin/java -Djava.util.logging.config.file=/usr/local/tomcat/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -server -XX:PermSize=128M -XX:MaxPermSize=512M -Xms1024m -Xmx1024m -Duser.timezone=Asia/Shanghai -Djava.awt.headless=true -Djava.endorsed.dirs=/usr/local/tomcat/endorsed -classpath /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar -Dcatalina.base=/usr/local/tomcat -Dcatalina.home=/usr/local/tomcat -Djava.io.tmpdir=/usr/local/tomcat/temp org.apache.catalina.startup.Bootstrap start
[iyunv@test13 memcached]# kill -9 1237
[iyunv@test13 memcached]# /usr/local/tomcat/bin/startup.sh
Using CATALINA_BASE: /usr/local/tomcat
Using CATALINA_HOME: /usr/local/tomcat
Using CATALINA_TMPDIR: /usr/local/tomcat/temp
Using JRE_HOME:       /usr/local/jdk7
Using CLASSPATH:    /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar

#如下图可以看出  端口已被监听
[iyunv@test13 memcached]# netstat -lnp |grep mem
tcp       0    0 0.0.0.0:11211             0.0.0.0:*                LISTEN    8207/bin/memcached
tcp       0    0 :::11211                   :::*                      LISTEN    8207/bin/memcached
udp       0    0 0.0.0.0:11211             0.0.0.0:*                            8207/bin/memcached
udp       0    0 :::11211                   :::*                                  8207/bin/memcached

[iyunv@test13 memcached]# netstat -lnp |grep java
tcp       0    0 ::ffff:127.0.0.1:8005    :::*                      LISTEN    8225/java
tcp       0    0 :::8009                   :::*                      LISTEN    8225/java
tcp       0    0 :::8080                   :::*                      LISTEN    8225/java

7、测试memcached
[iyunv@test13 memcached]# yum install -y telnet
[iyunv@test13 tomcat]# telnet 127.0.0.1 11211
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is '^]'.

status

QQ截图20151126090010.png

quit 退出

我这个是做的单台机器所以看不出什么效果最好是2台机器做集群去百度一段代码
可以看到sessionID保持不变

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