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;
index index.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.conf
NameVirtualHost *: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,StatA
worker.TomcatA.port=8009
worker.TomcatA.host=172.16.249.125
worker.TomcatA.type=ajp13
worker.TomcatA.lbfactor=1
worker.TomcatB.port=8009
worker.TomcatB.host=172.16.249.99
worker.TomcatB.type=ajp13
worker.TomcatB.lbfactor=1
worker.tcsrvs.type=lb
worker.tcsrvs.sticky_session=0
worker.tcsrvs.balance_workers=TomcatA,TomcatB
worker.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,StatA
worker.TomcatA.port=8009
worker.TomcatA.host=172.16.249.125
worker.TomcatA.type=ajp13
worker.TomcatA.lbfactor=1
worker.TomcatB.port=8009
worker.TomcatB.host=172.16.249.99
worker.TomcatB.type=ajp13
worker.TomcatB.lbfactor=1
worker.tcsrvs.type=lb
worker.tcsrvs.sticky_session=1
worker.tcsrvs.balance_workers=TomcatA,TomcatB
worker.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/>