Tomcat单机多实例

准备：一台CentOS7机器即可，配置中关闭防火墙，或开放防火墙相应端口

实验效果图：

 

 1、环境首选tomcat的Java环境

 操作实验用的是tomcat8.5.35版本

实验的开始安装 jdk 包

rpm -ivh jdk-8u131-linux-x64_.rpm 

rpm -qa|grep jdk

[root@ localhost ~]# rpm -qa|grep jdk
jdk1.8.0_131-1.8.0_131-fcs.x86_64

2、解压tomcat包到指定目录，（实验目录选取  /opt/ ）

tar -zxf apache-tomcat-8.5.35.tar.gz -C /opt/

 由于实验单机多实例，提前把 tomcat1&2 相对文件copy

mv conf/ webapps/ temp/ logs/ work/ -t /opt/tomcat1
mv conf/ webapps/ temp/ logs/ work/ -t /opt/tomcat2

3、配置多实例的相对端口：

同一个服务器部署不同 Tomcat 要设置不同的端口，不然会报端口冲突，所以我们只需要修改conf/server.xml中的其中前三个端口就行了。

Server Port：该端口用于监听关闭tomcat的shutdown命令，默认为8005
Connector HTTP Port：该端口用于监听HTTP的请求，默认为8080
Connector AJP Port：该端口用于监听AJP（ Apache JServ Protocol ）协议上的请求，通常用于整合Apache Server等其他HTTP服务器，默认为8009
Redirect Port：重定向端口，出现在Connector配置中，如果该Connector仅支持非SSL的普通http请求，那么该端口会把 https 的请求转发到这个Redirect Port指定的端口，默认为8443；

去掉注释的配置文件如下

<?xml version="1.0" encoding="UTF-8"?>
<Server port="8005" shutdown="SHUTDOWN">
  <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" />

  <GlobalNamingResources>
    <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>

  <Service name="Catalina">
    <Connector port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443" />
    <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />


    <Engine name="Catalina" defaultHost="localhost">

      <Realm className="org.apache.catalina.realm.LockOutRealm">
        <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
               resourceName="UserDatabase"/>
      </Realm>

      <Host name="localhost"  appBase="webapps"
            unpackWARs="true" autoDeploy="true">

        <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
               prefix="localhost_access_log" suffix=".txt"
               pattern="%h %l %u %t &quot;%r&quot; %s %b" />

      </Host>
    </Engine>
  </Service>
</Server>

4、编辑tomcat启动脚本

#!/bin/bash
export CATALINA_HOME=/opt/apache-tomcat-8.5.35
export CATALINA_BASE=${1%/}

echo $CATALINA_BASE

TOMCAT_ID=`ps aux |grep "java"|grep "Dcatalina.base=$CATALINA_BASE "|grep -v "grep"|awk '{ print $2}'`


if [ -n "$TOMCAT_ID" ] ; then
echo "tomcat(${TOMCAT_ITOMCAT_ID}) still running now , please shutdown it firest";
    exit 2;
fi

TOMCAT_START_LOG=`$CATALINA_HOME/bin/startup.sh`


if [ "$?" = "0" ]; then
    echo "$0 ${1%/} start succeed"
else
    echo "$0 ${1%/} start failed"
    echo $TOMCAT_START_LOG
fi

5、编辑tomcat关闭脚本，优化可以做一个重启脚本

[root@ localhost ~]# cat /opt/tomcat_shell/stop_tomcat.sh 
#!/bin/bash
export CATALINA_HOME=/software/apache-tomcat-8.5.35
export CATALINA_BASE=${1%/}
 
echo $CATALINA_BASE
 
TOMCAT_ID=`ps aux |grep "java"|grep "[D]catalina.base=$CATALINA_BASE "|awk '{ print $2}'`
 
if [ -n "$TOMCAT_ID" ] ; then
TOMCAT_STOP_LOG=`$CATALINA_HOME/bin/shutdown.sh`
else
    echo "Tomcat instance not found : ${1%/}"
    exit
 
fi
 
 
if [ "$?" = "0" ]; then
    echo "$0 ${1%/} stop succeed"
else
    echo "$0 ${1%/} stop failed"
    echo $TOMCAT_STOP_LOG
fi

6、进入tomcat脚本目录，进行tomcat的启动

./start_tomcat.sh /opt/tomcat1
./start_tomcat.sh /opt/tomcat2

[root@ localhost opt]# cd tomcat_shell/
[root@ localhost tomcat_shell]# ls
start_tomcat.sh  stop_tomcat.sh
[root@ localhost tomcat_shell]# ./start_tomcat.sh /opt/tomcat1
/opt/tomcat1
./start_tomcat.sh /opt/tomcat1 start succeed
[root@ localhost tomcat_shell]# ./start_tomcat.sh /opt/tomcat2
/opt/tomcat2
./start_tomcat.sh /opt/tomcat2 start succeed

 实验完毕

注意：

tomcat启动较慢，等待时间稍微较长，会显示网页无法正常运行属于服务启动ing。