Lab Environment:
1, nginx agent function
Nginx Proxy:
eth0:192.168.8.48
Vmnet2 eth1:192.168.10.10
Tomcat Server1:
Vmnet2 eth0:192.168.10.20
Tomcat Server2:
Vmnet2 eth0:192.168.10.30
# yum Install-y nginx-1.8.1-1.el6.ngx.x86_64.rpm
# vim/etc/nginx/conf.d/default.conf
Location/{
Root/web/htdocs;
Index index.jsp index.html index.htm;
}
Location ~* \. (jsp|do|action) $ {
Proxy_pass http://192.168.10.20;
}
Location ~* \. (jpg|jpeg|gif|png|pdf|doc|rar|exe|zip|) $ {
Proxy_pass http://192.168.10.30;
}
2, Apache agent function ①Proxy for HTTP mode# cd/etc/httpd/conf.d/
# Vim Mod_proxy.conf
Add the following content:
Proxyrequests off
Proxypreservehost on
proxypass/http://192.168.10.20/
proxypassreverse/http://192.168.l0.20/
<location/>
Order Allow,deny
Allow from all
</Location>
Agent Proxyvia on ②AJP mode
Proxyrequests off
Proxypreservehost on
proxypass/ajp://192.168.10.20/
proxypassreverse/ajp://192.168.l0.20/
<location/>
Order Allow,deny
Allow from all
</Location>
②, configuring Apache MOD_JK-based load balancing
A. Installing the APXS Plugin
# yum Install-y httpd-devel
# Tar XF tomcat-connectors-1.2.37-src.tar.gz
# CD Tomcat-connectors-1.2.37-src/native
#./configure--with-apxs=/usr/sbin/apxs
# Make && make install
Configure related files
# CD/ETC/HTTPD/CONF.D
# Vim Mod_jk.conf
LoadModule Jk_module modules/mod_jk.so
Jkworkersfile/etc/httpd/conf.d/workers.properties
Jklogfile Logs/mod_jk.log
Jkloglevel Notice
Jkmount/* Tomcata
Jkmount/status/stata
# Vim Workers.properties
Worker.list=tomcata,stata
Worker. Tomcata.type=ajp13
Worker. toccata.port=8009
Worker. tomcata.host=192.168.10.20
Worker. Tomcata.lbfactor=1
Worker.stata.type=status
Access the following address to see the status of Tomcat Server1
http://192.168.8.48/status/
③ Configuring the Load Balancer server with MOD_JK
Configuring a proxy Server
# CD/ETC/HTTPD/CONF.D
# Cat Mod_jk.conf
LoadModule Jk_module modules/mod_jk.so
Jkworkersfile/etc/httpd/conf.d/workers.properties
Jklogfile Logs/mod_jk.log
Jkloglevel Notice
Jkmount/* LBCA
Jkmount/status/stata
# Cat Workers.properties
Worker.list=lbca,stata
Worker. Tomcata.type=ajp13
Worker. tomcata.port=8009
Worker. tomcata.host=192.168.10.20
Worker. Tomcata.lbfactor=1
Worker. Tomcatb.type=ajp13
Worker. tomcatb.port=8009
Worker. tomcatb.host=192.168.10.30
Worker. Tomcatb.lbfactor=1
Worker.lbca.type=lb
Worker.lbca.sticky_session=1
Worker.lbca.balance_workers=tomcata,tomcatb
Worker.stata.type=status
Configure back-end Tomcat
# cd/usr/local/tomcat/webapps/
# mkdir TestApp
# CD testapp/
# MKDIR-PV Web-inf/{classes,lib}
mkdir:created directory ' Web-inf '
mkdir:created directory ' web-inf/classes '
mkdir:created directory ' Web-inf/lib '
# Vim Index.jsp
Tomcata Server
INDEX.JSP:
<%@ page language= "java"%>
<body>
<table align= "centre" border= "1" >
<tr>
<td>session id</td>
<% Session.setattribute ("chinasoft.com.com", "chinasoft.com"); %>
<td><%= Session.getid ()%></td>
</tr>
<tr>
<td>created on</td>
<td><%= session.getcreationtime ()%></td>
</tr>
</table>
</body>
TOMCATB Server
INDEX.JSP:
<%@ page language= "java"%>
<body>
<table align= "centre" border= "1" >
<tr>
<td>session id</td>
<% Session.setattribute ("chinasoft.com", "chinasoft.com"); %>
<td><%= Session.getid ()%></td>
</tr>
<tr>
<td>created on</td>
<td><%= session.getcreationtime ()%></td>
</tr>
</table>
</body>
Test is OK
# Curl Http://192.168.10.20:8080/testapp/index.jsp
# Curl Http://192.168.10.30:8080/testapp/index.jsp
Configure session Sessions binding (which can break the load balancing effect):
Load balancer, and implement session binding be aware of a Jvmroute property for each Tomcat instance's Egine container! This name should be consistent with the name of the front-end dispatch module!
In addition, the mod_proxy implements load-balanced session binding, and also uses Sticksession=jsessionid (characters to capitalize)!
Worker.properties:
Worker. Tomcatb.lbfactor=1
Define Jvmroute in the back-end Tomcat server Server.xml file:
<engine name= "Catalina" defaulthost= "localhost" jvmroute= "Tomcata" >
④.apache Mod_proxy implements HTTP-based load Balancing configuration:
# MV Mod_jk.conf Mod_jk.conf.bak
# MV Mod_proxy.conf.bak mod_proxy.conf
# Vim Mod_proxy.conf
Proxyvia on
Proxyrequests off
Proxypreservehost on
<proxy balancer://lb>
Balancermember http://192.168.10.20:8080 loadfactor=1 Route=tomcata
Balancermember http://192.168.10.30:8080 loadfactor=1 ROUTE=TOMCATB
</Proxy>
proxypass/balancer://lb/
proxypassreverse/balancer://lb/
<location/>
Order Allow,deny
Allow from all
</Location>
⑤. Configuring the persistence of Session sessions
Proxyvia on
Proxyrequests off
Proxypreservehost on
<proxy balancer://lb>
Balancermember http://192.168.10.20:8080 loadfactor=1 Route=tomcata
Balancermember http://192.168.10.30:8080 loadfactor=1 ROUTE=TOMCATB
</Proxy>
Proxypass/balancer://lb/stickysession=jsessionid
proxypassreverse/balancer://lb/
<location/>
Order Allow,deny
Allow from all
</Location>
⑥. Configuration Management Interface Proxyvia on
Proxyrequests off
Proxypreservehost on
<proxy balancer://lb>
Balancermember http://192.168.10.20:8080 loadfactor=1 Route=tomcata
Balancermember http://192.168.10.30:8080 loadfactor=1 ROUTE=TOMCATB
</Proxy>
<Location/lbmanager>
SetHandler Balancer-manager
</Location>
Proxypass/lbmanager!
proxypass/balancer://lb/
proxypassreverse/balancer://lb/
<location/>
Order Allow,deny
Allow from all
</Location>
Access: Http://192.168.8.48/lbmanager, you can see the load-balanced state interface
Cluster configuration:
Load balancer: 192.168.10.10:
# Vim Mod_proxy.conf
Proxyvia onproxyrequests offproxypreservehost on<proxy balancer://lb> balancermember/http 192.168.10.20:8080 loadfactor=1 route=tomcata balancermember http://192.168.10.30:8080 loadfactor=1 route= tomcatb</proxy><location/lbmanager> SetHandler Balancer-manager</location>proxypass/ Lbmanager! Proxypass/balancer://lb/proxypassreverse/balancer://lb/<location/> Order allow,deny allow from all </Location>
192.168.10.20:
<engine name= "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=" 228.1.0.4 "port=" 45564 "frequency=" "Droptime=" "/> <receiver classname=" org.apache.catalina.tribes.transport.nio.NioReceiver "address=" 192.168.10.20 " port= "4000" autobind= "selectortimeout=" 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="/t mp/war-listen/"watchenabled=" false "/> <clusterlistener classname=" Org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener "/> <clusterlistener classname=" Org.apache.catalina.ha.session.ClusterSessionListener "/></cluster>
192.168.10.30:
<engine name= "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=" 228.1.0.4 "port=" 45564 "frequency=" "Droptime=" "/> <receiver classname=" org.apache.catalina.tribes.transport.nio.NioReceiver "address=" 192.168.10.30 " port= "4000" autobind= "selectortimeout=" maxthreads= "6"/><sender classname= "org.apache.c Atalina.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="/t mp/war-listen/"watchenabled=" false "/><clusterlistener classname=" Org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener "/><clusterlistener classname=" Org.apache.catalina.ha.session.ClusterSessionListener "/></cluster>
and add the routing information on each cluster node:
Route add-net 228.1.0.4 netmask 255.255.255.255 Dev eth0
And in:
Add the Web. XML node:
<distributable/>
You can see that the session ID has not changed
Use Apache and Nginx proxies for Tomcat load balancing and cluster configuration
