Tomcat Seeion 集群

部署：nginx服务器：11-11；tomcat1:11-3; tomcat2:11-6

nginx服务器11-11做搭建：

[root@mcb-11 ~]# systemctl stop firewalld
[root@mcb-11 ~]# setenforce 0
[root@mcb-11 ~]# yum install epel-release.noarch  -y
[root@mcb-11 ~]# yum install nginx -y
[root@mcb-11 ~]# systemctl start nginx
[root@mcb-11 ~]# systemctl status nginx

[root@mcb-11 ~]# vim /etc/nginx/nginx.conf
[root@mcb-11 ~]# nginx -t
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful
[root@mcb-11 ~]# nginx -s reload

upstream tomcat {
    server  192.168.11.3:8080;
    server  192.168.11.6:8080;
    }

location ~* \.jsp$ {
        proxy_pass  http://tomcat;
        }

11-3 tomcat 搭建

[root@mcb-11-3 ~]# mkdir /data
[root@mcb-11-3 ~]# cd /data
[root@mcb-11-3 data]# rz -E
rz waiting to receive.
[root@mcb-11-3 data]# rz -E
rz waiting to receive.
[root@mcb-11-3 data]# ls
apache-tomcat-8.5.16.tar.gz  jdk-8u291-linux-x64.tar.gz
[root@mcb-11-3 data]# tar xf jdk-8u291-linux-x64.tar.gz -C /usr/local   版本不一致也不能解压
[root@mcb-11-3 data]# cd /usr/local/
[root@mcb-11-3 local]# ln -s jdk1.8.0_291/ jdk
[root@mcb-11-3 local]# vim /etc/profile.d/jdk.sh
[root@mcb-11-3 local]# . /etc/profile.d/jdk.sh
[root@mcb-11-3 local]# java -version
openjdk version "1.8.0_131"
OpenJDK Runtime Environment (build 1.8.0_131-b12)
OpenJDK 64-Bit Server VM (build 25.131-b12, mixed mode)
#此时jdk安装完成
[root@mcb-11-3 local]# cd -
/data
[root@mcb-11-3 data]# tar xf apache-tomcat-8.5.16.tar.gz 
[root@mcb-11-3 data]# cp -r apache-tomcat-8.5.16 /usr/local/tomcat
[root@mcb-11-3 data]# cd /usr/local/
[root@mcb-1-3 data]# useradd -s /sbin/nologin tomcat
[root@mcb-11-3 data]# cd /usr/local/
[root@mcb-11-3 local]# chown tomcat:tomcat tomcat/ -R
[root@mcb-11-3 system]# cat > /usr/lib/systemd/system/tomcat.service <<EOF
> [Unit]
> Description=Tomcat
> After=syslog.target network.target
> 
> [Service]
> Type=forking
> ExecStart=/usr/local/tomcat/bin/startup.sh
> ExecStop=/usr/local/tomcat/bin/shutdown.sh
> RestartSec=3
> PrivateTmp=true
> User=tomcat
> Group=tomcat
> 
> [Install]
> WantedBy=multi-user.target
> 
> EOF
[root@mcb-11-3 system]# systemctl daemon-reload
[root@mcb-11-3 system]# systemctl start tomcat
[root@mcb-11-3 system]# systemctl status tomcat.service 
● tomcat.service - Tomcat
   Loaded: loaded (/usr/lib/systemd/system/tomcat.service; disabled; vendor preset: disabled)
   Active: active (running) since 日 2024-03-17 00:28:10 CST; 19s ago
  Process: 7560 ExecStart=/usr/local/tomcat/bin/startup.sh (code=exited, status=0/SUCCESS)
 Main PID: 7575 (catalina.sh)

[root@mcb-11-3 data]# cd /usr/local/tomcat
[root@mcb-11-3 tomcat]# ls
apache-tomcat-9.0.16  conf             LICENSE  README.md      temp
bin                   CONTRIBUTING.md  logs     RELEASE-NOTES  webapps
BUILDING.txt          lib              NOTICE   RUNNING.txt    work
[root@mcb-11-3 tomcat]# cd webapps/
[root@mcb-11-3 webapps]# ls
docs  examples  host-manager  manager  ROOT
[root@mcb-11-3 webapps]# cd /usr/local/tomcat/webapps/ROOT
[root@mcb-11-3 ROOT]# ls
asf-logo-wide.svg  bg-nav.png    index.jsp          tomcat.gif        tomcat.svg
bg-button.png      bg-upper.png  RELEASE-NOTES.txt  tomcat.png        WEB-INF
bg-middle.png      favicon.ico   tomcat.css         tomcat-power.gif
[root@mcb-11-3 ROOT]# mv index.jsp index.jsp.bak
[root@mcb-11-3 ROOT]# ls
asf-logo-wide.svg  bg-nav.png    index.jsp.bak      tomcat.gif        tomcat.svg
bg-button.png      bg-upper.png  RELEASE-NOTES.txt  tomcat.png        WEB-INF
bg-middle.png      favicon.ico   tomcat.css         tomcat-power.gif
[root@mcb-11-3 ROOT]# rz -E
rz waiting to receive.
[root@mcb-11-3 ROOT]# cat index.jsp
<%@ page import="java.util.*" %>
<!DOCTYPE html>
<html lang="en">
<head>
   <meta charset="UTF-8">
   <title>tomcat test</title>
</head>
<body>
<div>On <%=request.getServerName() %></div>
<div><%=request.getLocalAddr() + ":" + request.getLocalPort() %></div>
<div>SessionID = <span style="color:blue"><%=session.getId() %></span></div>
<%=new Date()%>
</body>
</html>
[root@mcb-11-3 ROOT]#

11-6tomcat 搭建

[root@mcb-11-6 local]# cd /usr/local/tomcat
[root@mcb-11-6 tomcat]# ls
bin           conf             lib      logs    README.md      RUNNING.txt  webapps
BUILDING.txt  CONTRIBUTING.md  LICENSE  NOTICE  RELEASE-NOTES  temp         work
[root@mcb-11-6 tomcat]# cd webapps/
[root@mcb-11-6 webapps]# ls
docs  examples  host-manager  manager  ROOT
[root@mcb-11-6 webapps]# cd /usr/local/tomcat/webapps/ROOT
[root@mcb-11-6 ROOT]# ls
asf-logo-wide.svg  bg-nav.png    index.jsp          tomcat.gif        tomcat.svg
bg-button.png      bg-upper.png  RELEASE-NOTES.txt  tomcat.png        WEB-INF
bg-middle.png      favicon.ico   tomcat.css         tomcat-power.gif
[root@mcb-11-6 ROOT]# mv index.jsp index.jsp.bak
[root@mcb-11-6 ROOT]# ls
asf-logo-wide.svg  bg-nav.png    index.jsp.bak      tomcat.gif        tomcat.svg
bg-button.png      bg-upper.png  RELEASE-NOTES.txt  tomcat.png        WEB-INF
bg-middle.png      favicon.ico   tomcat.css         tomcat-power.gif
[root@mcb-11-6 ROOT]# rz -E
rz waiting to receive.
[root@mcb-11-6 ROOT]# cat index.jsp
<%@ page import="java.util.*" %>
<!DOCTYPE html>
<html lang="en">
<head>
 ? <meta charset="UTF-8">
 ? <title>tomcat test</title>
</head>
<body>
<div>On <%=request.getServerName() %></div>
<div><%=request.getLocalAddr() + ":" + request.getLocalPort() %></div>
<div>SessionID = <span style="color:blue"><%=session.getId() %></span></div>
<%=new Date()%>
</body>
</html>
[root@mcb-11-6 ROOT]#

检测

问题：去访问代理服务器会发现，每次调度到192.168.11.3和192.168.11.4上面，sessionID都会改变，假如我们要让他保持会话连接(sessionID不会变)

二会话绑定

①ip_ hash

[root@mcb-11-3 local]# vim /etc/nginx/nginx.conf

检测：

缺点：把服务器也停止了，不调度了

②调度服务器不停止

Apache Tomcat 9 (9.0.87) - Clustering/Session Replication How-To

把官网文本拷贝下来，ip_hash 删除，影响实验

 <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="228.0.0.4"
                        port="45564"
                        frequency="500"
                        dropTime="3000"/>
            <Receiver className="org.apache.catalina.tribes.transport.nio.NioReceiver"
                      address="auto"
                      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.MessageDispatchInterceptor"/>
          </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>