about how to build a Tomcat cluster online or can find a lot of relevant tutorials, here combined with my own in the actual application of the operation to do the next memo.
Case Description:
The cluster is done here with 2 Tomcat deployed natively. Of course, the Tomcat cluster can be distributed, and the difference is only in the address-port configuration, which is discussed later in the article.
Deployment environment:
6.01.6. 0_45
Cluster composition:
httpd + tomcat + mod_jk
Version selection:
httpd-2.2. - Apache-tomcat-7.0. the mod_jk-1.2. -httpd-2.2. 3 #这里写的是httpd -2.2.3, but in fact it fits with httpd-2.2.26.
The above documents (all I downloaded from the Apache official website) I have done the package and upload to the Baidu cloud disk, the need for friends can use the following link to download:
http://pan.baidu.com/s/1mg1i1v6
After uploading the required files to the server, we are ready to build.
1. First install the httpd, the process is simple as follows:
#解压httpd包 tar -zxf httpd-2.2. . Tar . GZCD httpd-2.2. /#配置预编译选项, here only the output directory is available. /configure--prefix=~/apache2# compile make#安装 makeinstall
2. Deploying Tomcat
#解压tomcat包, and copied into 2 copies tar -zxf apache-tomcat-7.0. A. Tar . GZ MV apache-tomcat-7.0. tomcat1/CP -R tomcat1/tomcat2/
2.1 Configure the Tomcat property, here is the example of TOMCAT1, 2 ( the main place to note here is the port, do not cause conflicts when set ):
#修改tomcat配置文件server. XML, main modifications: Shutdown port, connect service port, AJP Port<server port="8006"shutdown="SHUTDOWN"><connector port="8081"Protocol="http/1.1"redirectport="8443"/><connector port="8010"Protocol="ajp/1.3"redirectport="8443"/>#修改集群名称和tomcat别名<engine name="Catalina"defaulthost="localhost"Jvmroute="TOMCAT1">#去掉cluster节点的注释<cluster classname="Org.apache.catalina.ha.tcp.SimpleTcpCluster"/>#修改以上端口是为了避免本机内多个tomcat同时运行造成端口冲突 # Modify the Tomcat configuration file context.xml to<Context> node Increase distributable="true"Property
Similarly, the configuration of the TOMCAT2:
#修改tomcat配置文件server. XML, main modifications: Shutdown port, connect service port, AJP Port<server port="8007"shutdown="SHUTDOWN"><connector port="8082"Protocol="http/1.1"redirectport="8443"/><connector port="8011"Protocol="ajp/1.3"redirectport="8443"/>#修改集群名称和tomcat别名<engine name="Catalina"defaulthost="localhost"Jvmroute="TOMCAT2">#去掉cluster节点的注释<cluster classname="Org.apache.catalina.ha.tcp.SimpleTcpCluster"/>#修改以上端口是为了避免本机内多个tomcat同时运行造成端口冲突 # Modify the Tomcat configuration file context.xml to<Context> node Increase distributable="true"Property
2.2 Add a test file for Tomcat and post-test cluster performance using:
<!--edit webapps/test/test.jsp, used primarily to test load balancing scenarios -<%@ Page ContentType="text/html; charset=gb2312" %><HTML> <Head> <title>Tomcat-cluster-test-page</title> </Head> <Body>SessionID:<%=Session.getid ()%> </Body></HTML>
OK, basically the configuration of Tomcat is here to end.
3. Add the cluster configuration file for httpd
#在apache2/conf/add content in the wokers.properties file # file under the following form: #serverworker. List=Loadbalancer#tomcat1worker.tomcat1.port=8010#该端口是tomcat1的AJP服务端口, set the method as shown in the following section Worker.tomcat1.host=localhost #如果tomcat部署在其他机器上, can fill out its server IPworker.tomcat1.type=Ajp13worker.tomcat1.lbfactor=1#tomcat2worker. Tomcat2.port=8011#该端口是tomcat2的AJP服务端口, set the method as shown in the following section Worker.tomcat2.host=Localhostworker.tomcat2.type=Ajp13worker.tomcat2.lbfactor=1#loadbalancerworker. Loadbalancer.type=lbworker.loadbalancer.balance_workers=tomcat1,tomcat2worker.loadbalancer.sticky_session=1
3.1 After extracting mod_jk apache2/modules and naming the file as mod_jk.so, then modify the configuration file as follows:
#编辑apache2/conf/httpd.conf, add configuration at bottom: #加载mod_jk模块LoadModule jk_module modules/mod_jk.so# Specify load Balancer profile Jkworkersfile conf/workers.properties# define log output Jklogfile logs/mod_jk.logjkloglevel Debug #将任意请求都交由loadbalancer控制器处理JkMount /* loadbalancer
3.2 Handwriting A boot controller for httpd:
#!/bin/bash#file: Run.SH# what:httpd-controler, Usage:run.SH[OPTIONS] <start|status|stop> Case " $" inchstart)/tomcat/apache2/bin/apachectl-f/tomcat/apache2/conf/httpd.confEcho "apache-httpd started." ;; Stop)Kill-term 'Cat/ecis3/apache2/logs/Httpd.pid 'Echo "apache-httpd stopped." ;; Status)if[-Z"' ps-ef|grep httpd|grep-v grep '"]; Then Echo "apache-httpd not started." Else Echo "apache-httpd is running." fi ;; *) Echo "Usage: $ [OPTIONS] <start|stop|status>" ;;Esac
4. Launch Tomcat and HTTPD:
Tomcat1/bin/startup. SH tomcat2/bin/startup. SH apache2/bin/run. SH start
After booting, access to the http://localhost:8080/test/test.jsp through the browser, the page appears normal:
So let's find a machine to test the load Balancer performance, the test results are as follows:
[[email protected] ~/test]$for ((I= 0 ; I<1000 ; I++ > do > wget http:// 192.168.1.100:8080/test/test.jsp 2>/dev/null > done [[email protected] ~/test]$awk -F. /sessionid/{a[$2]++}end{for (i in a) {print I, A[i]}} " test.jsp*500 tomcat2 500 From the results: After the load, Tomcat received almost 1:1 of the request, or good.
The above is the Tomcat cluster construction of the whole process, the article if there are inappropriate for everyone please enlighten.
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