nginx+tomcat+memcached-优快云博客

本文链接：https://blog.youkuaiyun.com/vhkgcf/article/details/82889441

本文介绍如何通过Nginx实现Tomcat服务器集群，并使用Memcached实现会话共享，确保跨服务器的信息一致性。涵盖Nginx配置、Tomcat部署、Memcached安装及配置等关键步骤。

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Server2,server3:

tar zxf jdk-7u79-linux-x64.tar.gz -C /usr/local/

cd /usr/local/

ln -s jdk1.7.0_79/ java

vim /etc/profile

export  JAVA_HOME=/usr/local/java
export  CLASSPATH=.:$JAVA_HOME/lib:$JAVA_HOME/jre/lib
export  PATH=$PATH:$JAVA_HOME/bin

source /etc/profile

tar zxf apache-tomcat-7.0.90.tar.gz -C /usr/local/

cd /usr/local/

ln -s apache-tomcat-7.0.90/ tomcat

cd tomcat/

bin/startup.sh

cd /usr/local/tomcat/webapps/ROOT/

vim test.jsp

time:<%=new java.utail.Date() %>

cd /usr/local/tomcat/webapps/ROOT/

vim test.jsp

<%@ page contentType="text/html; charset=GBK" %>
<%@ page import="java.util.*" %>
<html><head><title>Cluster App Test</title></head>
<body>
Server Info:
<%
out.println(request.getLocalAddr() + " : " + request.getLocalPort()+"<br>");%>
<%
out.println("<br> ID " + session.getId()+"<br>");
String dataName = request.getParameter("dataName");
if (dataName != null && dataName.length() > 0) {
String dataValue = request.getParameter("dataValue");
session.setAttribute(dataName, dataValue);
}
out.print("<b>Session list</b>");
Enumeration e = session.getAttributeNames();
while (e.hasMoreElements()) {
String name = (String)e.nextElement();
String value = session.getAttribute(name).toString();
out.println( name + " = " + value+"<br>");
System.out.println( name + " = " + value);
}
%>
<form action="test.jsp" method="POST">
name:<input type=text size=20 name="dataName">
<br>
key:<input type=text size=20 name="dataValue">
<br>
<input type=submit>
</form>
</body>

此时server2和server3上提交的信息是不共享的。

Server1:

tar zxf nginx-1.14.0.tar.gz

tar zxf nginx-sticky-module-ng.tar.gz

cd nginx-1.14.0

yum install gcc pcre-devel openssl-devel -y

./configure --prefix=/usr/local/lnmp/nginx --with-http_ssl_module --with-http_stub_status_module --with-threads --with-file-aio --add-module=/mnt/nginx-sticky-module-ng

make

make install

ln -s /usr/local/lnmp/nginx/sbin/nginx /sbin/

cd /usr/local/lnmp/nginx/conf/

vim nginx.conf

http {
          upstream tomcat{
          sticky;  ###将sticky写入nginx配置文件
          server 172.25.61.2:8080;
          server 172.25.61.3:8080;
         }
    include       mime.types;
    default_type  application/octet-stream;

        location ~ \.jsp$ {  ##jsp结尾的进行负载均衡请求
            proxy_pass   http://tomcat;    
        }

实现server2和server3信息共享

Server2:

yum install memcached -y

yum install telnet -y

/etc/init.d/memcached start

cd /usr/local/tomcat/conf/

vim context.xml

<Manager className="de.javakaffee.web.msm.MemcachedBackupSessionManager"

memcachedNodes="n2:172.25.61.2:11211,n1:172.25.61.3:11211"

failoverNodes="n2"

requestUriIgnorePattern=".*\.(ico|png|gif|jpg|css|js)$"

transcoderFactoryClass="de.javakaffee.web.msm.serializer.kryo.KryoTranscoderFactory"

/>

将asm-3.2.jar kryo-1.04.jar kryo-serializers-0.10.jar memcached-session-manager-1.6.3.jar memcached-session-manager-tc7-1.6.3.jar minlog-1.2.jar msm-kryo-serializer-1.6.3.jar reflectasm-1.01.jar spymemcached-2.7.3.jar放入/usr/local/tomcat/lib中

/usr/local/tomcat/bin/startup.sh

Server3: