1、Tomcat内存参数调整。

[root@localhost ~]# vim /usr/local/tomcat/bin/catalina.sh 
JAVA_OPTS="$JAVA_OPTS -server -Xmn1024M -Xms2096M -Xmx2096M -Djava.net.preferIPv4Stack=true -Djava.awt.headless=true -Dorg.apache.catalina.connector.RECYCLE_FACADES=false -XX:PermSize=512M -XX:MaxPermSize=512M  -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:+CMSParallelRemarkEnabled -XX:+UseCMSCompactAtFullCollection -XX:CMSFullGCsBeforeCompaction=0 -XX:+CMSClassUnloadingEnabled -XX:+UseFastAccessorMethods -XX:+UseCMSInitiatingOccupancyOnly  -XX:SurvivorRatio=65536 -XX:MaxTenuringThreshold=0 -XX:CMSInitiatingOccupancyFraction=81 -XX:SoftRefLRUPolicyMSPerMB=0 -Xloggc:gc.log -XX:+PrintGCDetails

2、安装tomcat-native以提升tomcat性能

        apr下载地址：http://apache.org/

[root@localhost~]#tar -zxvf apr-1.5.1.tar.gz
[root@localhost~]#cd apr-1.5.1
[root@localhostapr-1.5.1]#./configure --prefix=/usr/local/apr   #安装apr可移植运行库
[root@localhostapr-1.5.1]# make
[root@localhostapr-1.5.1]# make install
[root@localhost~]# cd /usr/local/tomcat/bin/
[root@localhostbin]# tar xf tomcat-native.tar.gz
[root@localhostbin]# cd tomcat-native-1.1.29-src/jni/native/
[root@localhostnative]# ./configure --with-apr=/usr/local/apr --with-java-home=/usr/local/java
[root@localhostnative]# make && make install
[root@localhost ~]# vim /etc/profile  #声明环境变量
LD_LIBRARY_PATH=/usr/local/apr/lib

3、配置多实例Tomcat。

    Tomcat下载地址：http://tomcat.apache.org/

[root@localhost~]# tar xf apache-tomcat-7.0.47.tar.gz -C /usr/local   #解压tomcat到/usr/local目录
[root@localhost~]# cp -r /usr/local/apache-tomcat-7.0.47/ /usr/local/apache-tomcat-7.0.47-2  #配置Tomcat多实例
[root@localhost~]# mv /usr/local/apache-tomcat-7.0.47/ /usr/local/apache-tomcat-7.0.47-1
[root@localhost~]# ln -sv /usr/local/apache-tomcat-7.0.47-1/ /usr/local/tomcat1  #创建软连接，方便管理
[root@localhost~]# ln -sv /usr/local/apache-tomcat-7.0.47-2/ /usr/local/tomcat2
[root@localhost ~]# vim /etc/profile.d/custom.sh   #声明环境变量
CATALINA_HOME_1=/usr/local/tomcat1
CATALINA_HOME_2=/usr/local/tomcat2
JAVA_HOME=/usr/local/java
LD_LIBRARY_PATH=/usr/local/apr/lib
export CATALINA_HOME_1  CATALINA_HOME_2  JAVA_HOME  LD_LIBRARY_PATH
export PATH=$PATH:$JAVA_HOME/bin
[root@localhost ~]# . /etc/profile.d/custom.sh  #执行自定义变量脚本，使之生效
[root@localhost~]# vim /usr/local/tomcat1/bin/startup.sh #修改tomcat的启动和关闭脚本，分别指定tomcat实例家目录
export CATALINA_HOME=$CATALINA_HOME_1
[root@localhost ~]# vim/usr/local/tomcat1/bin/shutdown.sh
exportCATALINA_HOME=$CATALINA_HOME_1
[root@localhost ~]# vim/usr/local/tomcat2/bin/startup.sh
exportCATALINA_HOME=$CATALINA_HOME_2
[root@localhost ~]# vim /usr/local/tomcat2/bin/shutdown.sh
exportCATALINA_HOME=$CATALINA_HOME_2
[root@localhost ~]# vim /etc/init.d/tomcat1
#!/bin/sh
# Tomcat init script for Linux.
#
# chkconfig: 2345 96 14
# description: The Apache Tomcat servlet/JSP container.
JAVA_HOME=/usr/local/java
CATALINA_HOME=/usr/local/tomcat1
LD_LIBRARY_PATH=/usr/local/apr/lib
export JAVA_HOME CATALINA_HOME LD_LIBRARY_PATH
exec $CATALINA_HOME/bin/catalina.sh $*
[root@localhost ~]# vim /etc/init.d/tomcat2
#!/bin/sh
# Tomcat init script for Linux.
#
# chkconfig: 2345 96 14
# description: The Apache Tomcat servlet/JSP container.
JAVA_HOME=/usr/local/java
CATALINA_HOME=/usr/local/tomcat2
LD_LIBRARY_PATH=/usr/local/apr/lib
export JAVA_HOME CATALINA_HOME LD_LIBRARY_PATH
exec $CATALINA_HOME/bin/catalina.sh $*
[root@localhost~]# vim /usr/local/tomcat2/conf/server.xml   #修改tomcat2默认端口号
              …………
              <Server port="8006"shutdown="SHUTDOWN">  
                     …………
                     <Connectorport="8081" protocol="HTTP/1.1"
                            …………
                            <Connectorport="8010" protocol="AJP/1.3" redirectPort="8443"/>

4、配置redis session共享。

配置redis session共享，把以下3个jar包放到2个tomcat实例的库$CATALINA_HOME_1/lib/   $CATALINA_HOME_2/lib/
        
commons-pool-1.6.jar
jedis-2.1.0.jar
tomcat-redis-session-manager-1.1.jar
 
然后修改$CATALINA_HOME/conf/context.xml指定redis服务器路径
 
<ValveclassName="com.radiadesign.catalina.session.RedisSessionHandlerValve"/>
      <ManagerclassName="com.radiadesign.catalina.session.RedisSessionManager"database="0" host="192.168.1.1"maxInactiveInterval="1800" port="1234"/>

5、日志分割。

[root@localhost ~]# tar xf cronolog-1.6.2.tar.gz   #安装cron日志分割工具
[root@localhost ~]# cd cronolog-1.6.2
[root@localhost cronolog-1.6.2]# ./configure
[root@localhost cronolog-1.6.2]# make && make install

Tomcat配置