单台服务器部署和安装多个不同版本的Tomcat与Jdk

一、问题

    由于之前开发的项目的运行环境是Tomcat7和Jdk6，,部署到服务器上已成功运行，现要对项目的运行日志进行监控，便于问题的发现，然而新开发的监控组件必须运行在

Tomcat8上，所以需在同台服务器下安装Tomcat8，而Tomcat8部署需要Jdk7以上的版本，这就需要单台机器多部署。

二、所需资源

• 一台Linux服务器
• Tomcat7与Tomcat8安装包
• Jdk6与Jdk8安装包

三、操作步骤

    首先安装dk6和Jdk8（可以使用Jdk7，这里使用的是Jdk8），Jdk安装步骤此处不做说明，重点说下Jdk的环境变量配置。本文由于项目部署在先，所以当时Jdk的环境变量配

置的是1.6，现在又安装上Jdk8，需怎样配置Jdk的环境变量。我在此处的做法是保持原有的1.6配置信息，新装得1.8不做任何环境变量的配置。

    然后将Tomcat7和Tomcat8安装到固定目录下，Tomcat7部署的是原有项目，配置信息保持默认，（如需对其优化，可自行对其进行配置）。Tomcat8需要重新修改配置信息，

如继续保持默认，将和Tomcat7冲突，启动将失败。Tomcat8配置修改如下：

•     修改Tomcat8/bin/目录下的catalina.sh文件，如下所示
• 修改Tomcat8/bin/目录下的setclasspath.sh文件，在文件25行加入上图红框中的内容，保存。
• 修改Tomcat8/conf/目录下的server.xml文件，如下所示（修改对应的port，只要不与服务器上的其它端口冲突就可以）：

  <?xml version='1.0' encoding='utf-8'?><!--  Licensed to the Apache Software Foundation (ASF) under one or more  contributor license agreements.  See the NOTICE file distributed with  this work for additional information regarding copyright ownership.  The ASF licenses this file to You under the Apache License, Version 2.0  (the "License"); you may not use this file except in compliance with  the License.  You may obtain a copy of the License at      http://www.apache.org/licenses/LICENSE-2.0  Unless required by applicable law or agreed to in writing, software  distributed under the License is distributed on an "AS IS" BASIS,  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the License for the specific language governing permissions and  limitations under the License.--><!-- Note:  A "Server" is not itself a "Container", so you may not     define subcomponents such as "Valves" at this level.     Documentation at /docs/config/server.html --><Server port="8195" shutdown="SHUTDOWN">  <!-- 此处port端口修改为8195-->  <Listener className="org.apache.catalina.startup.VersionLoggerListener" />  <!-- Security listener. Documentation at /docs/config/listeners.html  <Listener className="org.apache.catalina.security.SecurityListener" />  -->  <!--APR library loader. Documentation at /docs/apr.html -->  <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />  <!-- Prevent memory leaks due to use of particular java/javax APIs-->  <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />  <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />  <Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />  <!-- Global JNDI resources       Documentation at /docs/jndi-resources-howto.html  -->  <GlobalNamingResources>    <!-- Editable user database that can also be used by         UserDatabaseRealm to authenticate users    -->    <Resource name="UserDatabase" auth="Container"              type="org.apache.catalina.UserDatabase"              description="User database that can be updated and saved"              factory="org.apache.catalina.users.MemoryUserDatabaseFactory"              pathname="conf/tomcat-users.xml" />  </GlobalNamingResources>  <!-- A "Service" is a collection of one or more "Connectors" that share       a single "Container" Note:  A "Service" is not itself a "Container",       so you may not define subcomponents such as "Valves" at this level.       Documentation at /docs/config/service.html   -->  <Service name="Catalina">    <!--The connectors can use a shared executor, you can define one or more named thread pools-->    <!--    <Executor name="tomcatThreadPool" namePrefix="catalina-exec-"        maxThreads="150" minSpareThreads="4"/>    -->    <!-- A "Connector" represents an endpoint by which requests are received         and responses are returned. Documentation at :         Java HTTP Connector: /docs/config/http.html (blocking & non-blocking)         Java AJP  Connector: /docs/config/ajp.html         APR (HTTP/AJP) Connector: /docs/apr.html         Define a non-SSL/TLS HTTP/1.1 Connector on port 8080    -->    <Connector port="8080" protocol="HTTP/1.1"               connectionTimeout="20000"               redirectPort="8443" />    <!-- 此处port端口改为8091 -->    <!-- A "Connector" using the shared thread pool-->    <!--    <Connector executor="tomcatThreadPool"               port="8091" protocol="HTTP/1.1"               connectionTimeout="20000"               redirectPort="8443" />    -->    <!-- Define a SSL/TLS HTTP/1.1 Connector on port 8443         This connector uses the NIO implementation that requires the JSSE         style configuration. When using the APR/native implementation, the         OpenSSL style configuration is required as described in the APR/native         documentation -->    <!--    <Connector port="8443" protocol="org.apache.coyote.http11.Http11NioProtocol"               maxThreads="150" SSLEnabled="true" scheme="https" secure="true"               clientAuth="false" sslProtocol="TLS" />    -->    <!-- Define an AJP 1.3 Connector on port 8009 -->    <Connector port="8199" protocol="AJP/1.3" redirectPort="8443" />  <!-- 此处port端口改为8199 -->        <!-- An Engine represents the entry point (within Catalina) that processes         every request.  The Engine implementation for Tomcat stand alone         analyzes the HTTP headers included with the request, and passes them         on to the appropriate Host (virtual host).         Documentation at /docs/config/engine.html -->    <!-- You should set jvmRoute to support load-balancing via AJP ie :    <Engine name="Catalina" defaultHost="localhost" jvmRoute="jvm1">    -->    <Engine name="Catalina" defaultHost="localhost">      <!--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"/>      -->      <!-- 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">        <!-- SingleSignOn valve, share authentication between web applications             Documentation at: /docs/config/valve.html -->        <!--        <Valve className="org.apache.catalina.authenticator.SingleSignOn" />        -->        <!-- Access log processes all example.             Documentation at: /docs/config/valve.html             Note: The pattern used is equivalent to using pattern="common" -->        <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"               prefix="localhost_access_log" suffix=".txt"               pattern="%h %l %u %t "%r" %s %b" />      </Host>    </Engine>  </Service></Server>