Nginx
前端代理服务器172.16.71.1
从ftp下载Nginx
安装
vim /etc/nginx/nginx.conf
http {
...
# 添加以下内容
upstream tcsrvs {
server 172.16.71.4:8080;
server 172.16.71.5:8080;
}
...
}
vim /etc/nginx/conf.d/default.conf
location / {
root /usr/share/nginx/html;
proxy_pass http://tcsrvs/; #添加此行
index index.html index.htm;
}
后端Tomcat服务器
172.16.71.4和172.16.71.5
两个主机都要安装jdk和Tomcat
yum install java-1.8.0-openjdk-devel -y
yum install tomcat -y
主机1
mkdir -pv /var/lib/tomcat/webapps/test/{lib,classes,WEB-INF}
vim /var/lib/tomcat/webapps/test/index.jsp
<%@ page language="java" %>
<html>
<head><title>TomcatA</title></head>
<body>
<h1><font color="red">TomcatA.magedu.com</font></h1>
<table align="centre" border="1">
<tr>
<td>Session ID</td>
<% session.setAttribute("magedu.com","magedu.com"); %>
<td><%= session.getId() %></td>
</tr>
<tr>
<td>Created on</td>
<td><%= session.getCreationTime() %></td>
</tr>
</table>
</body>
</html>
systemctl start tomcat
主机2
mkdir -pv /var/lib/tomcat/webapps/test/{lib,classes,WEB-INF}
vim /var/lib/tomcat/webapps/test/index.jsp
<%@ page language="java" %>
<html>
<head><title>TomcatB</title></head>
<body>
<h1><font color="red">TomcatB.magedu.com</font></h1>
<table align="centre" border="1">
<tr>
<td>Session ID</td>
<% session.setAttribute("magedu.com","magedu.com"); %>
<td><%= session.getId() %></td>
</tr>
<tr>
<td>Created on</td>
<td><%= session.getCreationTime() %></td>
</tr>
</table>
</body>
</html>
systemctl start tomcat
前端代理
systemctl start nginx
测试
从浏览器访问172.16.71.1,显示Tomcat欢迎页面
从浏览器访问172.16.71.1/test,显示测试页面信息，刷新会变化。
httpd
yum install httpd -y
vim /etc/httpd/conf.d/tomcat_httpd.conf
<proxy balancer://tcsrvs>
BalancerMember http://172.16.71.4:8080
BalancerMember http://172.16.71.5:8080
ProxySet lbmethod=byrequests
</Proxy>
<VirtualHost *:80>
ServerName www.magedu.com
ProxyVia On
ProxyRequests Off
ProxyPreserveHost On
<Proxy *>
Require all granted
</Proxy>
ProxyPass / balancer://tcsrvs/
ProxyPassReverse / balancer://tcsrvs/
<Location />
Require all granted
</Location>
</VirtualHost>
systemctl start httpd
测试
从浏览器访问172.16.71.1,显示Tomcat欢迎页面
从浏览器访问172.16.71.1/test,显示测试页面信息，刷新会变化。
实现会话粘性方法
172.16.71.4
vim /etc/tomcat/server.xml
<Engine name="Catalina" defaultHost="localhost" jvmRoute="TomcatA"> #修改此行
systemctl restart tomcat
172.16.71.5
vim /etc/tomcat/server.xml
<Engine name="Catalina" defaultHost="localhost" jvmRoute="TomcatB"> #修改此行
systemctl restart tomcat
172.16.71.1
vim /etc/httpd/conf.d/tomcat_httpd.conf
Header add Set-Cookie "ROUTEID=.%{BALANCER_WORKER_ROUTE}e; path=/" env=BALANCER_ROUTE_CHANGED
<proxy balancer://tcsrvs>
BalancerMember http://172.18.100.67:8080 route=TomcatA loadfactor=1
BalancerMember http://172.18.100.68:8080 route=TomcatB loadfactor=2
ProxySet lbmethod=byrequests
ProxySet stickysession=ROUTEID
</Proxy>
<VirtualHost *:80>
ServerName lb.magedu.com
ProxyVia On
ProxyRequests Off
ProxyPreserveHost On
<Proxy *>
Require all granted
</Proxy>
ProxyPass / balancer://tcsrvs/
ProxyPassReverse / balancer://tcsrvs/
<Location />
Require all granted
</Location>
</VirtualHost>
systemctl restart httpd
测试
从浏览器访问172.16.71.1,显示Tomcat欢迎页面
从浏览器访问172.16.71.1/test,显示测试页面信息，刷新不会变化。
启用管理接口
vim /etc/httpd/conf.d/balaner_manager.conf
<Location /balancer-manager>
SetHandler balancer-manager
ProxyPass !
Require all granted
</Location>
systemctl restart httpd
测试
浏览器访问172.16.71.1/balancer-manager会出现管理接口
ajp balancer
vim /etc/httpd/conf.d/tomcat-ajp.conf
<proxy balancer://tcsrvs>
BalancerMember ajp://172.16.71.4:8009
BalancerMember ajp://172.16.71.5:8009
ProxySet lbmethod=byrequests
</Proxy>
<VirtualHost *:80>
ServerName lb.magedu.com
ProxyVia On
ProxyRequests Off
ProxyPreserveHost On
<Proxy *>
Require all granted
</Proxy>
ProxyPass / balancer://tcsrvs/
ProxyPassReverse / balancer://tcsrvs/
<Location />
Require all granted
</Location>
<Location /balancer-manager>
SetHandler balancer-manager
ProxyPass !
Require all granted
</Location>
</VirtualHost>
测试
从浏览器访问172.16.71.1,显示Tomcat欢迎页面
从浏览器访问172.16.71.1/test,显示测试页面信息，刷新会变化。
会话绑定与前面相似
vim /etc/httpd/conf.d/tomcat-ajp.conf
<proxy balancer://tcsrvs>
BalancerMember ajp://172.16.71.4:8009 route=TomcatA loadfactor=1
BalancerMember ajp://172.16.71.5:8009 route=TomcatB loadfactor=1
ProxySet lbmethod=byrequests
</Proxy>
<VirtualHost *:80>
ServerName lb.magedu.com
ProxyVia On
ProxyRequests Off
ProxyPreserveHost On
<Proxy *>
Require all granted
</Proxy>
ProxyPass / balancer://tcsrvs/
ProxyPassReverse / balancer://tcsrvs/
<Location />
Require all granted
</Location>
<Location /balancer-manager>
SetHandler balancer-manager
ProxyPass !
Require all granted
</Location>
</VirtualHost>
Tomcat集群
172.16.71.4
vim /etc/tomcat/server.xml
<Engine name="Catalina" defaultHost="localhost" jvmRoute="TomcatA"> # jvmRoute 一定要有
<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="228.0.71.4"
port="45564"
frequency="500"
dropTime="3000"/>
<Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
address="172.16.71.4"
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.ClusterSessionListener"/>
</Cluster>
cp /etc/tomcat/web.xml /var/lib/tomcat/webapps/test/WEB-INF/
vim /var/lib/tomcat/webapps/test/WEB-INF/web.xml
<distributable/> # 添加
systemctl restart tomcat
172.16.71.5同理
vim /etc/tomcat/server.xml
<Engine name="Catalina" defaultHost="localhost" jvmRoute="TomcatB"> # jvmRoute 一定要有
<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="228.0.71.4"
port="45564"
frequency="500"
dropTime="3000"/>
<Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
address="172.16.71.5"
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.ClusterSessionListener"/>
</Cluster>
cp /etc/tomcat/web.xml /var/lib/tomcat/webapps/test/WEB-INF/
vim /var/lib/tomcat/webapps/test/WEB-INF/web.xml
<distributable/> # 添加
systemctl restart tomcat
测试
从浏览器访问172.16.71.1,显示Tomcat欢迎页面
从浏览器访问172.16.71.1/test,显示测试页面信息，刷新不会变化。
注意：一定要先为主机配置网关，否则Tomcat将无法启动
memcached 实现session存储
172.16.71.4和172.16.71.5
vim /etc/tomcat/server.xml
# 删除上一步添加的内容
systemctl stop tomcat
yum install memcached -y
systemctl start memcached
下载类库
cd /usr/share/tomcat/lib
lftp 172.16.0.1
cd pub/Sources/7.x86_64/msm/
mget *
bye
vim /etc/tomcat/server.xml
#在<Host>中添加：
<Context path="/" docBase="test" reloadable="true">
</Context>
systemctl start tomcat
测试
从浏览器访问172.16.71.1,显示Tomcat欢迎页面
从浏览器访问172.16.71.1/test,显示测试页面信息，刷新不会变化。
添加session保持
172.16.71.4 172.16.71.5
vim /etc/tomcat/server.xml
<Host name="localhost" appBase="webapps"
unpackWARs="true" autoDeploy="true">
<Context path="/sample" docBase="sample" reloadable="true">
<Manager className="de.javakaffee.web.msm.MemcachedBackupSessionManager"
memcachedNodes="n1:172.16.71.4:11211,n2:172.16.71.5:11211"
failoverNodes="n1"
requestUriIgnorePattern=".*\.(ico|png|gif|jpg|css|js)$"
transcoderFactoryClass="de.javakaffee.web.msm.serializer.javolution.JavolutionTranscoderFactory"
systemctl restart tomcat
测试
从浏览器访问172.16.71.1,显示Tomcat欢迎页面
从浏览器访问172.16.71.1/sample,显示测试页面信息，刷新session不会变化，内容会变化。
注意：此处前端要使用Nginx，httpd不能实现以上功能，原因未知。
原创文章，作者：wangshuai，如若转载，请注明出处：http://www.178linux.com/68251
