這篇文章主要介紹了關於Nginx負載調度器雙Tomcat負載及會話共享MySQL後端資料庫,有著一定的參考價值,現在分享給大家,有需要的朋友可以參考一下
環境:
IP | ##作用|
---|---|
nginx | |
#tomcat1 | |
tomcat2 | |
##mysql |
①關閉防火牆或開放埠80,8080,3306,關閉selinux
②安裝nginx
从nginx官网下载最新版 wget http://nginx.org/download/nginx-1.13.9.tar.gz
[root@192 ~]# yum -y install pcre-devel zlib-devel gcc gcc-c make
[root@192 ~]# useradd -M -s /sbin/nologin nginx
[root@192 ~]# tar zxf nginx-1.13.9.tar.gz -C /usr/src
[root@192 ~]# cd /usr/src/nginx-1.13 .9/
[root@192 nginx-1.13.9]# ./configure --prefix=/usr/local/nginx --user=nginx --group=nginx --with-http_stub_status_module && make && make install
[root@192 ~]# ln -s /usr/local/nginx/sbin/nginx /usr/local/sbin
不啟動nginx③兩台tomcat主機進行安裝
jdk从官网下载需要许可,允许之后下载至本地,导入主机 tomcat从官网downloads找到tomcat7.0或者更高版本 wget http://mirror.bit.edu.cn/apache/tomcat/tomcat-7/v7.0.86/bin/apache-tomcat-7.0.86.tar.gz
[root@192 ~]# tar zxf jdk-7u65-linux-x64.gz -C /usr/src
[root@192 ~]# mv jdk1.7.0_65/ /usr/local/ java
[root@192 ~]# mv apache-tomcat-7.0.54/ /usr/local/tomcat7
export JAVA_HOME=/usr/local/java export CATALINA_HOME=/usr/local/tomcat7 export PATH=$JAVA_HOME/bin:$CATALINA_HOME/bin:$PATH
java version "1.8.0_171" Java(TM) SE Runtime Environment (build 1.8.0_171-b11) Java HotSpot(TM) 64-Bit Server VM (build 25.171-b11, mixed mode)
Using CATALINA_BASE: /usr/local/tomcat7 Using CATALINA_HOME: /usr/local/tomcat7 Using CATALINA_TMPDIR: /usr/local/tomcat7/temp Using JRE_HOME: /usr/local/java Using CLASSPATH: /usr/local/tomcat7/bin/bootstrap.jar:/usr/local/tomcat7/bin/tomcat-juli.jar Server version: Apache Tomcat/7.0. Server built: May 19 2014 10:26:15 Server number: 7.0.86.0 OS Name: Linux OS Version: 3.10.0-327.el7.x86_64 Architecture: amd64 JVM Version: 1.7.0_65-b17 JVM Vendor: Oracle Corporation
Using CATALINA_BASE: /usr/local/tomcat7 Using CATALINA_HOME: /usr/local/tomcat7 Using CATALINA_TMPDIR: /usr/local/tomcat7/temp Using JRE_HOME: /usr/local/java Using CLASSPATH: /usr/local/tomcat7/bin/bootstrap.jar:/usr/local/tomcat7/bin/tomcat-juli.jar Tomcat started.
#[root@192 ~]#vim server.xml
....... <Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat-1"> <Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="true"> <Context docBase="/web/webapp1" path="" reloadable="true"/>
[root@192 ~]#vim /web/webapp1/index.jsp
<%@page language="java" import="java.util.*" pageEncoding="UTF-8"%> <html> <head> <title>tomcat-1</title> </head> <body> <h1><font color="red">Session serviced by tomcat</font></h1> <table aligh="center" border="1"> <tr> <td>Session ID</td> <td><%=session.getId()%></td> <% session.setAttribute("abc","abc");%> </tr> <tr> <td>Create on</td> <td><%= session.getCreationTime() %></td> </tr> </table> </body> </html>
[root@192 ~] #shutdown.sh
[root@192 ~]#startup.sh
#測試訪問看到兩台tomcat主機session ID不同,準備工作完成
步驟:①兩台主機設定會話共享群集
....... <Engine name="Catalina" defaultHost="localhost" jvmRoute="tomcat-1"> <!--For clustering, please take a look at documentation at: /docs/cluster-howto.html (simple how to) /docs/config/cluster.html (reference documentation) --> <!-- <Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"/> --> <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.catal ina.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="192.168.2.5" 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" temDir="/tmp/war-temp/" deployDir="/tmp/war-deploy/" watchDir="/tmp/war-listen/" watchEnabled="false"/> <ClusterListener className="org.apache.catalina.ha.session.JvmRouteSessionIDBinderListener"/> <ClusterListener className="org.apache.catalina.ha.session.ClusterSessionListener"/> </Cluster> <!-- Use the LockOutRealm to prevent attempts to guess user passwords via a brute-force attack --> <Realm className="org.apache.catalina.realm.LockOutRealm"> <!-- This Realm uses the UserDatabase configured in the global JNDI resources under the key "UserDatabase". Any edits that are performed against this UserDatabase are immediately available for use by the Realm. --> <Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/> </Realm> <Host name="localhost" appBase="webapps" unpackWARs="true" autoDeploy="true"> <Context docBase="/web/webapp1" path="" reloadable="true"/>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0"> <distributable/> #添加这个单词,必须有这一步,否则用户的session没法使用
如果開啟防火牆的話,開啟以下
[root@192 ~]#firewall-cmd --add-port=4000/tcp --permanent | #[root@192 ~]#firewall-cmd --reload | |
---|---|---|
注意:兩個tomcat配置一樣只要在Receiver段指對第二台主機ip位址即可 | ②配置nginx |
②下载mysql-connector-java-5.1.22-bin.jar 复制到tomcat7/lib/目录下(两台tomcat都需要配置)
[root@192 ~]# cp mysql-connector-java-5.1.22-bin.jar /usr/local/tomcat7/lib/
③配置context.xml
[root@192 ~]# cp /usr/local/tomcat7/conf/context.xml /usr/local/tomcat7/conf/context.xml.bak
[root@192 ~]# vim /usr/local/tomcat7/conf/context.xml
<Context> <!-- Default set of monitored resources --> <WatchedResource>WEB-INF/web.xml</WatchedResource> <Resource name="jdbc/TestDB" auth="Container" type="javax.sql.DataSource" maxActive="100" maxIdle="30" maxWait="10000" username="javauser" password="123.com" driverClassName="com.mysql.jdbc.Driver" url="jdbc:mysql://192.168.2.8:3306/javatest"/>
④配置web.xml
[root@192 ~]# vim /web/webapp1/web.xml
...... <distributable/> <description>MySQL Test App</description> <resource-ref> <description>DB Connection</description> <res-ref-name>jdbc/TestDB</res-ref-name> <res-type>javax.sql.DataSource</res-type> <res-auth>Container</res-auth> </resource-ref>
⑤编写连接数据库jsp文件
[root@192 ~]# vim /web/webapp1/test.jsp
<%@ page language="java" import="java.sql.*" pageEncoding="GB2312"%> <html> <head> <title>MySQL</title> </head> <body> connect MySQL<br> <% String driverClass="com.mysql.jdbc.Driver"; String url="jdbc:mysql://192.168.2.8:3306/javatest"; String username = "javauser"; String password = "123.com"; Class.forName(driverClass); Connection conn=DriverManager.getConnection(url, username, password); Statement stmt=conn.createStatement(); ResultSet rs = stmt.executeQuery("select * from testdata"); while(rs.next()){ out.println("<br>foo:"+rs.getString(2)+"bar:"+rs.getString(3)); } rs.close(); stmt.close(); conn.close(); %> </body></html>
⑥重启tomcat,测试连接
[root@192 ~]# shutdown.sh
[root@192 ~]# startup.sh
http://192.168.2.5/test.jsp
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