无法访问在Docker容器中启动的Tomcat
我正在启动Tomcat作为Docker容器：
$ docker run -dP tomcat 该过程正确启动：
$ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 48b87e545c18 tomcat "catalina.sh run" About a minute ago Up About a minute 0.0.0.0:32769->8080/tcp hopeful_ardinghelli $ docker logs 48b87e545c18 16-Sep-2015 17:16:38.027 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version: Apache Tomcat/8.0.26 16-Sep-2015 17:16:38.037 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server built: Aug 18 2015 11:38:37 UTC 16-Sep-2015 17:16:38.037 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server number: 8.0.26.0 16-Sep-2015 17:16:38.038 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Name: Linux 16-Sep-2015 17:16:38.038 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Version: 4.0.9-boot2docker 16-Sep-2015 17:16:38.038 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Architecture: amd64 16-Sep-2015 17:16:38.039 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Java Home: /usr/lib/jvm/java-7-openjdk-amd64/jre 16-Sep-2015 17:16:38.039 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Version: 1.7.0_79-b14 16-Sep-2015 17:16:38.040 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Vendor: Oracle Corporation 16-Sep-2015 17:16:38.040 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_BASE: /usr/local/tomcat 16-Sep-2015 17:16:38.041 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_HOME: /usr/local/tomcat 16-Sep-2015 17:16:38.041 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.config.file=/usr/local/tomcat/conf/logging.properties 16-Sep-2015 17:16:38.042 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager 16-Sep-2015 17:16:38.042 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.endorsed.dirs=/usr/local/tomcat/endorsed 16-Sep-2015 17:16:38.043 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.base=/usr/local/tomcat 16-Sep-2015 17:16:38.043 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.home=/usr/local/tomcat 16-Sep-2015 17:16:38.044 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.io.tmpdir=/usr/local/tomcat/temp 16-Sep-2015 17:16:38.044 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent 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/lib/x86_64-linux-gnu/jni:/lib/x86_64-linux-gnu:/usr/lib/x86_64-linux-gnu:/usr/lib/jni:/lib:/usr/lib 16-Sep-2015 17:16:38.226 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-nio-8080"] 16-Sep-2015 17:16:38.267 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read 16-Sep-2015 17:16:38.272 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["ajp-nio-8009"] 16-Sep-2015 17:16:38.274 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read 16-Sep-2015 17:16:38.282 INFO [main] org.apache.catalina.startup.Catalina.load Initialization processed in 1251 ms 16-Sep-2015 17:16:38.325 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service Catalina 16-Sep-2015 17:16:38.341 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet Engine: Apache Tomcat/8.0.26 16-Sep-2015 17:16:38.374 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat/webapps/host-manager 16-Sep-2015 17:17:16.231 INFO [localhost-startStop-1] org.apache.catalina.util.SessionIdGeneratorBase.createSecureRandom Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [36,979] milliseconds. 16-Sep-2015 17:17:16.276 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat/webapps/host-manager has finished in 37,901 ms 16-Sep-2015 17:17:16.276 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat/webapps/docs 16-Sep-2015 17:17:16.361 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat/webapps/docs has finished in 85 ms 16-Sep-2015 17:17:16.362 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat/webapps/examples 16-Sep-2015 17:17:17.221 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat/webapps/examples has finished in 859 ms 16-Sep-2015 17:17:17.242 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat/webapps/ROOT 16-Sep-2015 17:17:17.343 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat/webapps/ROOT has finished in 101 ms 16-Sep-2015 17:17:17.354 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory /usr/local/tomcat/webapps/manager 16-Sep-2015 17:17:17.452 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory /usr/local/tomcat/webapps/manager has finished in 98 ms 16-Sep-2015 17:17:17.460 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-8080"] 16-Sep-2015 17:17:17.484 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["ajp-nio-8009"] 16-Sep-2015 17:17:17.487 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 39204 ms
但是当我在URL http://localhost:32769的浏览器中打开服务器时，出现连接拒绝错误。 我也尝试明确发布端口：
$ docker run -d -p 8888:8080 tomcat
或者以交互式shell模式启动容器：
$ docker run -it -p 8888:8080 tomcat
但是都没有帮助： http://localhost:8888拒绝连接。 我将如何解决这个问题？
我只是在DigitalOcean Docker VM上testing了这个：
root@33b54c81-d980-41a4-982a-f0449663b68e:~# docker run -dP tomcat Unable to find image 'tomcat:latest' locally latest: Pulling from library/tomcat 843e2bded498: Pull complete ... Status: Downloaded newer image for tomcat:latest 41cea0a1fede58d066af0f6ce5fc17aef66d4b4912244cf4966b5f459b881e1b
容器运行：
root@33b54c81-d980-41a4-982a-f0449663b68e:~# docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 41cea0a1fede tomcat "catalina.sh run" 2 minutes ago Up 2 minutes 0.0.0.0:32768->8080/tcp mad_panini
通过docker-proxy主机端口映射testing：
root@33b54c81-d980-41a4-982a-f0449663b68e:~# telnet localhost 32768 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'. GET / HTTP/1.1 host: localhost HTTP/1.1 200 OK Server: Apache-Coyote/1.1 ...
请注意， Docker还在iptables打出了一个漏洞，允许与容器直接通信（不需要主机端口映射）：
root@33b54c81-d980-41a4-982a-f0449663b68e:~# iptables -L ... Chain DOCKER (1 references) target prot opt source destination ALLOW all -- anywhere anywhere ACCEPT tcp -- anywhere 172.17.0.1 tcp dpt:http-alt
直接testing：
root@33b54c81-d980-41a4-982a-f0449663b68e:~# telnet 172.17.0.1 8080 Trying 172.17.0.1... Connected to 172.17.0.1. Escape character is '^]'. GET / HTTP/1.1 host: localhost HTTP/1.1 200 OK Server: Apache-Coyote/1.1 ...
您也可以尝试将--net=hostparameter passing给--net=host docker run ，这--net=host主机的networking直接暴露给容器。
希望这可以帮助..
– ab1
端口映射是在默认机器的地址192.168.99.100 。 url分别是http://192.168.99.100:32769和http://192.168.99.100:8888 。 希望这可以帮助其他人遇到同样的问题。
如果您正在运行docker with boot2docker，则必须使用boot2docker虚拟机IP地址启动tomcat。
您可以使用以下命令获取IP地址：
boot2docker ip
然后运行http：// ip_address：8888
这是因为你不能使用本地主机来访问你的docker地址。 您必须使用与您的虚拟networking相关的IP。 你必须检查你的docker运行的是哪个子网。
例如：我的笔记本的IP地址是192.168.1.13，但是我的VirtualMachine的IP地址是192.168.99.100。
问候