简介：

Tomcat 扩展（ 一台服务器运行多个 tomcat ）

一、安装 JDK 、Tomcat

shell > rpm -ivh jdk-8u25-linux-x64.rpm # 安装 jdk ，jdk 版本最好与 tomcat 一致

shell > tar zxf apache-tomcat-8.0..tar.gz -C /usr/local/

shell > cd ..

shell > cp -r apache-tomcat-8.0. tomcat1 # 复制三份 tomcat 其中 tomcat1 保持不变

shell > cp -r apache-tomcat-8.0. tomcat2

shell > cp -r apache-tomcat-8.0. tomcat3

二、配置多 Tomcat

shell > vim tomcat2/conf/server.xml # 修改 tomcat2

 <Server port="" shutdown="SHUTDOWN"> # 原端口为  修改为

 <Connector port="" protocol="HTTP/1.1" # 原端口为  修改为

 <Connector port="" protocol="AJP/1.3" redirectPort="" /> # 原端口为  修改为 

shell > vim tomcat3/conf/server.xml # 修改 tomcat3

 <Server port="" shutdown="SHUTDOWN"> # 原端口为  修改为

 <Connector port="" protocol="HTTP/1.1" # 原端口为  修改为

 <Connector port="" protocol="AJP/1.3" redirectPort="" /> # 原端口为  修改为

三、测试

shell > echo "welcome to tomcat1" > /usr/local/tomcat1/webapps/ROOT/index.html # 创建首面文件

shell > echo "welcome to tomcat2" > /usr/local/tomcat2/webapps/ROOT/index.html

shell > echo "welcome to tomcat3" > /usr/local/tomcat3/webapps/ROOT/index.html

shell > /usr/local/tomcat1/bin/startup.sh # 启动 tomcat1

Using CATALINA_BASE: /usr/local/tomcat1

Using CATALINA_HOME: /usr/local/tomcat1

Using CATALINA_TMPDIR: /usr/local/tomcat1/temp

Using JRE_HOME: /usr

Using CLASSPATH: /usr/local/tomcat1/bin/bootstrap.jar:/usr/local/tomcat1/bin/tomcat-juli.jar

Tomcat started.

shell > tail /usr/local/tomcat1/logs/catalina.out # 查看日志，这里有 tomcat 的开启、关闭信息

-Oct- ::29.296 INFO [localhost-startStop-] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat1/webapps/manager has finished in  ms

-Oct- ::29.301 INFO [localhost-startStop-] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat1/webapps/examples

-Oct- ::30.488 INFO [localhost-startStop-] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat1/webapps/examples has finished in , ms

-Oct- ::30.492 INFO [localhost-startStop-] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat1/webapps/docs

-Oct- ::30.557 INFO [localhost-startStop-] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat1/webapps/docs has finished in  ms

-Oct- ::30.564 INFO [localhost-startStop-] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat1/webapps/ROOT

-Oct- ::30.614 INFO [localhost-startStop-] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat1/webapps/ROOT has finished in  ms

-Oct- ::30.624 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-8080"]

-Oct- ::30.643 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["ajp-nio-8009"]

-Oct- ::30.649 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in  ms

# 可以看到服务启动花费的时间

shell > netstat -anpt | grep java # 监听的端口（ 缺一不可 ）

tcp   ::: :::* LISTEN /java

tcp   ::ffff:127.0.0.1: :::* LISTEN /java

tcp   ::: :::* LISTEN /java

shell > curl "http://192.168.1.80:8080" # 访问一下首页文件

welcome to tomcat1

shell > ps aux | grep java # 看看进程路径也没有问题

root  2.2 8.6   pts/ Sl : : /usr/bin/java -Djava.util.logging.config.file=/usr/local/tomcat1/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/usr/local/tomcat1/endorsed -classpath /usr/local/tomcat1/bin/bootstrap.jar:/usr/local/tomcat1/bin/tomcat-juli.jar -Dcatalina.base=/usr/local/tomcat1 -Dcatalina.home=/usr/local/tomcat1 -Djava.io.tmpdir=/usr/local/tomcat1/temp org.apache.catalina.startup.Bootstrap start

shell > /usr/local/tomcat1/bin/shutdown.sh # 关闭 tomcat1
Using CATALINA_BASE: /usr/local/tomcat1
Using CATALINA_HOME: /usr/local/tomcat1
Using CATALINA_TMPDIR: /usr/local/tomcat1/temp
Using JRE_HOME: /usr
Using CLASSPATH: /usr/local/tomcat1/bin/bootstrap.jar:/usr/local/tomcat1/bin/tomcat-juli.jar
shell > /usr/local/tomcat1/bin/startup.sh # 启动 tomcat1

Using CATALINA_BASE: /usr/local/tomcat1

Using CATALINA_HOME: /usr/local/tomcat1

Using CATALINA_TMPDIR: /usr/local/tomcat1/temp

Using JRE_HOME: /usr

Using CLASSPATH: /usr/local/tomcat1/bin/bootstrap.jar:/usr/local/tomcat1/bin/tomcat-juli.jar

Tomcat started.

shell > /usr/local/tomcat2/bin/startup.sh # 启动 tomcat2

Using CATALINA_BASE: /usr/local/tomcat2

Using CATALINA_HOME: /usr/local/tomcat2

Using CATALINA_TMPDIR: /usr/local/tomcat2/temp

Using JRE_HOME: /usr

Using CLASSPATH: /usr/local/tomcat2/bin/bootstrap.jar:/usr/local/tomcat2/bin/tomcat-juli.jar

Tomcat started.

shell > /usr/local/tomcat3/bin/startup.sh # 启动 tomcat3

Using CATALINA_BASE: /usr/local/tomcat3

Using CATALINA_HOME: /usr/local/tomcat3

Using CATALINA_TMPDIR: /usr/local/tomcat3/temp

Using JRE_HOME: /usr

Using CLASSPATH: /usr/local/tomcat3/bin/bootstrap.jar:/usr/local/tomcat3/bin/tomcat-juli.jar

Tomcat started.
shell > netstat -anpt | grep java # 这种情况是 tomcat 还没有完全启动，稍等即可

tcp   ::: :::* LISTEN /java

tcp   ::: :::* LISTEN /java

tcp   ::: :::* LISTEN /java

tcp   ::: :::* LISTEN /java

tcp   ::: :::* LISTEN /java

tcp   ::: :::* LISTEN /java

shell > tail /usr/local/tomcat3/logs/catalina.out # 日志中也没有出来服务启动成功的标志

-Oct- ::02.840 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Vendor: Oracle Corporation

-Oct- ::03.619 INFO [main] org.apache.catalina.core.AprLifecycleListener.init The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: /usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib

-Oct- ::04.374 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-nio-8082"]

-Oct- ::04.431 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read

-Oct- ::04.442 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["ajp-nio-8029"]

-Oct- ::04.457 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read

-Oct- ::04.461 INFO [main] org.apache.catalina.startup.Catalina.load Initialization processed in  ms

-Oct- ::04.597 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service Catalina

-Oct- ::04.601 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet Engine: Apache Tomcat/8.0.

-Oct- ::04.628 INFO [localhost-startStop-] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat3/webapps/host-manager
shell > netstat -anpt | grep java # 现在 tomcat1// 都已经全部启动

tcp   ::: :::* LISTEN /java

tcp   ::: :::* LISTEN /java

tcp   ::: :::* LISTEN /java

tcp   ::: :::* LISTEN /java

tcp   ::: :::* LISTEN /java

tcp   ::ffff:127.0.0.1: :::* LISTEN /java

tcp   ::ffff:127.0.0.1: :::* LISTEN /java

tcp   ::ffff:127.0.0.1: :::* LISTEN /java

tcp   ::: :::* LISTEN /java

shell > curl "http://192.168.1.80:8080" # 全部可以访问

welcome to tomcat1

shell > curl "http://192.168.1.80:8081"

welcome to tomcat2

shell > curl "http://192.168.1.80:8082"

welcome to tomcat3
shell > tail - /usr/local/tomcat1/logs/catalina.out # 可以看到启动时间有长有短

-Oct- ::11.536 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in  ms

shell > tail - /usr/local/tomcat2/logs/catalina.out

-Oct- ::30.971 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in  ms

shell > tail - /usr/local/tomcat3/logs/catalina.out

-Oct- ::10.965 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in  ms

shell > ps aux | grep java # 进程路径也都没有错

root  1.3 8.4   pts/ Sl : : /usr/bin/java -Djava.util.logging.config.file=/usr/local/tomcat1/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/usr/local/tomcat1/endorsed -classpath /usr/local/tomcat1/bin/bootstrap.jar:/usr/local/tomcat1/bin/tomcat-juli.jar -Dcatalina.base=/usr/local/tomcat1 -Dcatalina.home=/usr/local/tomcat1 -Djava.io.tmpdir=/usr/local/tomcat1/temp org.apache.catalina.startup.Bootstrap start

root  1.3 8.5   pts/ Sl : : /usr/bin/java -Djava.util.logging.config.file=/usr/local/tomcat2/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/usr/local/tomcat2/endorsed -classpath /usr/local/tomcat2/bin/bootstrap.jar:/usr/local/tomcat2/bin/tomcat-juli.jar -Dcatalina.base=/usr/local/tomcat2 -Dcatalina.home=/usr/local/tomcat2 -Djava.io.tmpdir=/usr/local/tomcat2/temp org.apache.catalina.startup.Bootstrap start

root  1.4 8.6   pts/ Sl : : /usr/bin/java -Djava.util.logging.config.file=/usr/local/tomcat3/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/usr/local/tomcat3/endorsed -classpath /usr/local/tomcat3/bin/bootstrap.jar:/usr/local/tomcat3/bin/tomcat-juli.jar -Dcatalina.base=/usr/local/tomcat3 -Dcatalina.home=/usr/local/tomcat3 -Djava.io.tmpdir=/usr/local/tomcat3/temp org.apache.catalina.startup.Bootstrap start
shell > /usr/local/tomcat2/bin/shutdown.sh # 现在单独关闭任何一个 别的都不受影响

Using CATALINA_BASE: /usr/local/tomcat2

Using CATALINA_HOME: /usr/local/tomcat2

Using CATALINA_TMPDIR: /usr/local/tomcat2/temp

Using JRE_HOME: /usr

Using CLASSPATH: /usr/local/tomcat2/bin/bootstrap.jar:/usr/local/tomcat2/bin/tomcat-juli.jar

shell > ps aux | grep java

root  1.2 8.4   pts/ Sl : : /usr/bin/java -Djava.util.logging.config.file=/usr/local/tomcat1/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/usr/local/tomcat1/endorsed -classpath /usr/local/tomcat1/bin/bootstrap.jar:/usr/local/tomcat1/bin/tomcat-juli.jar -Dcatalina.base=/usr/local/tomcat1 -Dcatalina.home=/usr/local/tomcat1 -Djava.io.tmpdir=/usr/local/tomcat1/temp org.apache.catalina.startup.Bootstrap start

root  1.2 8.6   pts/ Sl : : /usr/bin/java -Djava.util.logging.config.file=/usr/local/tomcat3/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Djava.endorsed.dirs=/usr/local/tomcat3/endorsed -classpath /usr/local/tomcat3/bin/bootstrap.jar:/usr/local/tomcat3/bin/tomcat-juli.jar -Dcatalina.base=/usr/local/tomcat3 -Dcatalina.home=/usr/local/tomcat3 -Djava.io.tmpdir=/usr/local/tomcat3/temp org.apache.catalina.startup.Bootstrap start

root  0.0 0.0   pts/ S+ : : grep java

shell > netstat -anpt | grep java

tcp   ::: :::* LISTEN /java

tcp   ::: :::* LISTEN /java

tcp   ::: :::* LISTEN /java

tcp   ::ffff:127.0.0.1: :::* LISTEN /java

tcp   ::ffff:127.0.0.1: :::* LISTEN /java

tcp   ::: :::* LISTEN /java

## 可以启动、关闭任意 tomcat ，没有顺序之分。唯一注意的一点，就是启动有一个过程，需要稍微等等，不要急。
只需修改端口即可，无需按照网上所说，要设置变量、更改 catalina.sh 等文件（如有不对的地方，还请各位指正）

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