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

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <Server port="8005" shutdown="SHUTDOWN">
 3   <Listener className="org.apache.catalina.startup.VersionLoggerListener" />
 4   <!-- Security listener. Documentation at /docs/config/listeners.html
 5   <Listener className="org.apache.catalina.security.SecurityListener" />
 6   -->
 7   <!--APR library loader. Documentation at /docs/apr.html -->
 8   <Listener className="org.apache.catalina.core.AprLifecycleListener" SSLEngine="on" />
 9   <!-- Prevent memory leaks due to use of particular java/javax APIs-->
10   <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener" />
11   <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener" />
12   <Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener" />
13 
14   <GlobalNamingResources>
15     <Resource name="UserDatabase" auth="Container"
16               type="org.apache.catalina.UserDatabase"
17               description="User database that can be updated and saved"
18               factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
19               pathname="conf/tomcat-users.xml" />
20   </GlobalNamingResources>
21 
22   <Service name="Catalina">
23     <Connector port="8080" protocol="HTTP/1.1"
24                connectionTimeout="20000"
25                redirectPort="8443" />
26     <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" />
27 
28 
29     <Engine name="Catalina" defaultHost="localhost">
30 
31       <Realm className="org.apache.catalina.realm.LockOutRealm">
32         <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
33                resourceName="UserDatabase"/>
34       </Realm>
35 
36       <Host name="localhost"  appBase="webapps"
37             unpackWARs="true" autoDeploy="true">
38 
39         <Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs"
40                prefix="localhost_access_log" suffix=".txt"
41                pattern="%h %l %u %t &quot;%r&quot; %s %b" />
42 
43       </Host>
44     </Engine>
45   </Service>
46 </Server>

View Code

4、编辑tomcat启动脚本

 1 #!/bin/bash
 2 export CATALINA_HOME=/opt/apache-tomcat-8.5.35
 3 export CATALINA_BASE=${1%/}
 4 
 5 echo $CATALINA_BASE
 6 
 7 TOMCAT_ID=`ps aux |grep "java"|grep "Dcatalina.base=$CATALINA_BASE "|grep -v "grep"|awk '{ print $2}'`
 8 
 9 
10 if [ -n "$TOMCAT_ID" ] ; then
11 echo "tomcat(${TOMCAT_ITOMCAT_ID}) still running now , please shutdown it firest";
12     exit 2;
13 fi
14 
15 TOMCAT_START_LOG=`$CATALINA_HOME/bin/startup.sh`
16 
17 
18 if [ "$?" = "0" ]; then
19     echo "$0 ${1%/} start succeed"
20 else
21     echo "$0 ${1%/} start failed"
22     echo $TOMCAT_START_LOG
23 fi

5、编辑tomcat关闭脚本，优化可以做一个重启脚本

 1 [root@ localhost ~]# cat /opt/tomcat_shell/stop_tomcat.sh 
 2 #!/bin/bash
 3 export CATALINA_HOME=/software/apache-tomcat-8.5.35
 4 export CATALINA_BASE=${1%/}
 5  
 6 echo $CATALINA_BASE
 7  
 8 TOMCAT_ID=`ps aux |grep "java"|grep "[D]catalina.base=$CATALINA_BASE "|awk '{ print $2}'`
 9  
10 if [ -n "$TOMCAT_ID" ] ; then
11 TOMCAT_STOP_LOG=`$CATALINA_HOME/bin/shutdown.sh`
12 else
13     echo "Tomcat instance not found : ${1%/}"
14     exit
15  
16 fi
17  
18  
19 if [ "$?" = "0" ]; then
20     echo "$0 ${1%/} stop succeed"
21 else
22     echo "$0 ${1%/} stop failed"
23     echo $TOMCAT_STOP_LOG
24 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。