tomcat负载均衡
node2: #rpm -ivh jdk-7u67-linux-x64.rpm#vim /etc/profile.d/java.sh
export JAVA_HOME=/usr/java/latest
export PATH=$JAVA_HOME/bin:$PATH
#tar xf apache-tomcat-7.-.55-C /usr/local
#cd /usr/local
#ln -sv apache-tomcat-7.0.55 tomcat
#cd tomcat
#useradd tomcat
#chown -R tomcat.tomcat ./*
#vim /etc/profile.d/tomcat.sh
export CATALINA_HOME=/usr/local/tomcat
export PATH=$CATALINA_HOME/bin:$PATH
#su -tomcat -c ‘/usr/local/tomcat/bin/catalina.sh start’
#cd /etc/profile.d/
#scp java.sh tomcat.sh node3:/etc/profile.d/
node3: #rpm -ivh jdk-7u67-linux-x64.rpm
#tar xf apache-tomcat-7.0.55 -C /usr/local
#cd /usr/local
#ln -sv apache-tomcat-7.0.55 tomcat
#cd tomcat
#useradd tomcat
#chown -R tomcat.tomcat ./*
#su -tomcat -c ‘/usr/local/tomcat/bin/catalina.sh start’
#echo $PATH
#catalina.sh start
#ps aux | grep java（tomcat 身份运行java）
#catalina.sh stop
node2:#cd /usr/local/tomcat/conf/
#vim server.xml
<Enginename="Catalina"defaultHost="node2.stu7.com jvmRoute="TomcatA">
<Host name="node2.stu7.com"appBase="/webapps"
unpackWARs="true" autoDeploy="true">
<Host name="node2.stu7.com"appBase="/webapps"
unpackWARs="true" autoDeploy="true">
<Context path="" docBase="ROOT" reloadable="true" />
</Host>
node2:#mkdir -pv /webapps/ROOT/{lib,classes, WEB-INF}
# cd /webapps/ROOT/
#vim index.jsp
<%@ page language="java" %><html><head><title>TomcatA</title></head><body> <h1><font color="red">TomcatA.stu7.com</font></h1> <table align="centre" border="1"> <tr> <td>Session ID</td> <% session.setAttribute("stu7.com","stu7.com"); %> <td><%= session.getId() %></td> </tr> <tr> <td>Created on</td> <td><%= session.getCreationTime() %></td> </tr> </table></body></html>
#su -tomcat -c ‘catalina.sh start’
打开浏览器：172.16.249.125:8080
node2:#scp conf/server.xml node3:/usr/local/tomcat/conf/
node3:#mkdir -pv /webapps/ROOT/{lib,classes, WEB-INF}
#cd /webapps/ROOT/
#vim index.jsp
<%@ page language="java" %><html><head><title>TomcatB</title></head><body> <h1><font color="blue">TomcatB.stu7.com</font></h1> <table align="centre" border="1"> <tr> <td>Session ID</td> <% session.setAttribute("stu7.com","stu7.com"); %> <td><%= session.getId() %></td> </tr> <tr> <td>Created on</td> <td><%= session.getCreationTime() %></td> </tr> </table></body></html>#su -tomcat -c ‘catalina.sh start’打开浏览器;172.16.249.126:8080
nginx方式：node1:yum install nginx -y#vim /etc/nginx/nginx.conf upstream tcsrvs { server 172.16.249.125:8080; server 172.16.249.99:8080; }#vim /etc/nginx/conf.d/default.conf location / { #root /usr/share/nginx/html; proxy_pass http://tcsrvs; indexindex.html index.htm; }#nginx -t#servce nginx start打开浏览器：172.16.249.101
http方式:
node1:# httpd -M
proxy_balancer_module (shared) proxy_http_module (shared) proxy_ajp_module (shared)#cd /etc/httpd/conf/ #vim /httpd.conf
#DocumentRoot "/var/www/html"
#vim mod_http.conf (文件必须放在/etc/httpd/conf.d/)
NameVirtualHost *:80<Proxy balancer://tcsrvs> BalancerMember http://172.16.249.125:8080 loadfactor=1 BalancerMember http://172.16.249.99:8080 loadfactor=1 ProxySet lbmethod=byrequests</Proxy> <VirtualHost *:80> ServerName node4.stu7.com ErrorLog logs/error_log CustomLog logs/access_log common ProxyVia On ProxyRequests OFF proxypreserveHost On <Proxy *> Order deny,allow Allow from all </Proxy> Proxypass /status ! ProxyPass / balancer://tcsrvs/ proxypassReverse / balancer://tcsrvs/ <location /> Order deny,allow Allow from all </location></VirtualHost>#service httpd start#ss -tnl 80端口处于监听状态打开浏览器：172.16.249.101：
ajp方式：
#cd /etc/httpd/conf/ #vim /httpd.conf
#DocumentRoot "/var/www/html"
#vim mod_ajp.conf (文件必须放在/etc/httpd/conf.d/)
NameVirtualHost *:80<Proxy balancer://tcsrvs> BalancerMember http://172.16.249.125:8009 loadfactor=1 BalancerMember http://172.16.249.99:8009 loadfactor=1 #ProxySet lbmethod=byrequests</Proxy> <VirtualHost *:80> ServerName node4.stu7.com ErrorLog logs/error_log CustomLog logs/access_log common ProxyVia On ProxyRequests OFF proxypreserveHost On <Proxy *> Order deny,allow Allow from all </Proxy> Proxypass /status ! ProxyPass / balancer://tcsrvs/ proxypassReverse / balancer://tcsrvs/ <location /> Order deny,allow Allow from all </location></VirtualHost>#service httpd start#ss -tnl 80端口处于监听状态打开浏览器：172.16.249.101：
制定管理页面不代理： #cd /etc/httpd/conf.d/ #vim mod_ajp.confNameVirtualHost *:80<Proxy balancer://tcsrvs> BalancerMember ajp://172.16.249.125:8009 loadfactor=1 BalancerMember ajp://172.16.249.99:8009 loadfactor=1 # ProxySet lbmethod=byrequests</Proxy> <VirtualHost *:80> ServerName node4.stu7.com ErrorLog logs/error_log CustomLog logs/access_log common ProxyVia On ProxyRequests OFF proxypreserveHost On <Proxy *> Order deny,allow Allow from all </Proxy> <Location /balancer-manager> SetHandler balancer-manager Proxypass ! Order deny,allow Allow from all </Location> Proxypass /status ! ProxyPass / balancer://tcsrvs/ proxypassReverse / balancer://tcsrvs/ <location /> Order deny,allow Allow from all </location></VirtualHost>#serivce httpd restart打开浏览器：172.16.249.101/balancer-manager
mod_jk方式： #lftp 172.16.0.1/pub/Sources/6.x86_64/tomcat
tomcat-connectors-1.2.40-src.tar.gz
#yum install httpd-devel -y
#tar xf tomcat-connectors-1.2.40-src.tar.gz
# cd tomcat-connectors-1.2.40-src/native
#./configure --with-apxs=`which apxs`
#make && make install
#ls /usr/lib64/httpd/moudules/
#cd /etc/httpd
#vim conf.d/mod_jk.conf
LoadModule jk_module modules/mod_jk.so
JkWorkersFile /etc/httpd/conf.d/workers.properties
JklogFile logs/mod_jk.log
JklogLevel info
JkMOunt /status !
JkMount /jk-status StatA
JkMount /* tcsrvs
#vim workers.properties
worker.list=tcsrvs,StatAworker.TomcatA.port=8009worker.TomcatA.host=172.16.249.125worker.TomcatA.type=ajp13worker.TomcatA.lbfactor=1worker.TomcatB.port=8009worker.TomcatB.host=172.16.249.99worker.TomcatB.type=ajp13worker.TomcatB.lbfactor=1worker.tcsrvs.type=lbworker.tcsrvs.sticky_session=0worker.tcsrvs.balance_workers=TomcatA,TomcatBworker.statA.type=status #service httpd restart
打开浏览器：172.16.249.101：
session绑定：
#vim /usr/local/tomcat/conf/server.xml
<Enginename="Catalina"defaultHost="node2.stu7.com jvmRoute="TomcatA">
#su - tomcat -c ‘catalina.sh start’
#vim workers.properties
worker.list=tcsrvs,StatAworker.TomcatA.port=8009worker.TomcatA.host=172.16.249.125worker.TomcatA.type=ajp13worker.TomcatA.lbfactor=1worker.TomcatB.port=8009worker.TomcatB.host=172.16.249.99worker.TomcatB.type=ajp13worker.TomcatB.lbfactor=1worker.tcsrvs.type=lbworker.tcsrvs.sticky_session=1worker.tcsrvs.balance_workers=TomcatA,TomcatBworker.statA.type=status #service httpd restart
打开浏览器：172.16.249.101：
Delta会话集群配置
node2:#nano server.xml
在Engine或Host组件内部定义Cluster组件：
<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster" channelSendOptions="8">
<Manager className="org.apache.catalina.ha.session.DeltaManager" expireSessionsOnShutdown="false" notifyListenersOnReplication="true"/>
<Channel className="org.apache.catalina.tribes.group.GroupChannel"><Membership className="org.apache.catalina.tribes.membership.McastService" address="228.101.10.41" port="45564" frequency="500" dropTime="3000"/> <Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver" address="172.16.249.125" port="4000" autoBind="100" selectorTimeout="5000" maxThreads="6"/>
<Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter"> <Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/> </Sender> <Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/> <Interceptor className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/> </Channel>
<Valve className="org.apache.catalina.ha.tcp.ReplicationValve" filter=""/> <Valve className="org.apache.catalina.ha.session.JvmRouteBinderValve"/>
<Deployer className="org.apache.catalina.ha.deploy.FarmWarDeployer" tempDir="/tmp/war-temp/" deployDir="/tmp/war-deploy/" watchDir="/tmp/war-listen/" watchEnabled="false"/>
<ClusterListener className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/> <ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/> </Cluster>
#vim server.xml
<Enginename="Catalina"defaultHost="localhost"jvmRoute="TomcatA"> <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster" channelSendOptions="8">
<Manager className="org.apache.catalina.ha.session.DeltaManager" expireSessionsOnShutdown="false" notifyListenersOnReplication="true"/>
<Channel className="org.apache.catalina.tribes.group.GroupChannel"> <Membership className="org.apache.catalina.tribes.membership.McastService" address="228.101.10.24" 修改组播地址 port="45564" frequency="500" dropTime="3000"/> <Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver" address="172.16.249.125"节点地址 port="4000" autoBind="100" selectorTimeout="5000" maxThreads="6"/>
<Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter"> <Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/> </Sender> <Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/> <Interceptor className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/> </Channel>
<Valve className="org.apache.catalina.ha.tcp.ReplicationValve" filter=""/> <Valve className="org.apache.catalina.ha.session.JvmRouteBinderValve"/>
<Deployer className="org.apache.catalina.ha.deploy.FarmWarDeployer" tempDir="/tmp/war-temp/" deployDir="/tmp/war-deploy/" watchDir="/tmp/war-listen/" watchEnabled="false"/>
<ClusterListener className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/> <ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/> </Cluster><Host name="localhost"appBase="/webapps" unpackWARs="true" autoDeploy="true">
node2#scp server.xml node3:/usr/local/tomcat/conf/server/xml
node3:#vim server.xml
<Enginename="Catalina"defaultHost="localhost"jvmRoute=TomcatB"> <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster" channelSendOptions="8">
<Manager className="org.apache.catalina.ha.session.DeltaManager" expireSessionsOnShutdown="false" notifyListenersOnReplication="true"/>
<Channel className="org.apache.catalina.tribes.group.GroupChannel"> <Membership className="org.apache.catalina.tribes.membership.McastService" address="228.101.10.24" 修改组播地址 port="45564" frequency="500" dropTime="3000"/> <Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver" address="172.16.249.99"节点地址 port="4000" autoBind="100" selectorTimeout="5000" maxThreads="6"/>
<Sender className="org.apache.catalina.tribes.transport.ReplicationTransmitter"> <Transport className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/> </Sender> <Interceptor className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/> <Interceptor className="org.apache.catalina.tribes.group.interceptors.MessageDispatch15Interceptor"/> </Channel>
<Valve className="org.apache.catalina.ha.tcp.ReplicationValve" filter=""/> <Valve className="org.apache.catalina.ha.session.JvmRouteBinderValve"/>
<Deployer className="org.apache.catalina.ha.deploy.FarmWarDeployer" tempDir="/tmp/war-temp/" deployDir="/tmp/war-deploy/" watchDir="/tmp/war-listen/" watchEnabled="false"/>
<ClusterListener className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/> <ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/> </Cluster><Host name="localhost"appBase="/webapps" unpackWARs="true" autoDeploy="true">
node2:#cp web.xml /webapps/ROOT/WEB-INF/
#cd /webapps/ROOT/WEB-INF/
#vim web.xml
添加<distributable />
#scp web.xml node2:/webapps/ROOT/WEB-INF/
node2:#su - tomcat -c 'catalina.sh stop'
node2:#su - tomcat -c 'catalina.sh start'
node3:#su - tomcat -c 'catalina.sh stop'
node3:#su - tomcat -c 'catalina.sh start'
node2:#cd /usr/local/tomcat/
#tail logs/catalina.out
打开浏览器：172.16.249.101：（无论怎么刷新都是session id一致)
说明：
确保Engine组件中存在jvmRoute属性，其值要与mod_jk配置中使用worker同名； <Enginename="Catalina"defaultHost="localhost"jvmRoute="tomcatA">
为打算使用集群会话的webapp的web.xml配置文件（一般在META-INF）添加
<distributable/>
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