docker 运行 tomcat:latest 连接超时

Question

当运行 docker 对于 windows 版本时得到“ERR_CONNECTION_TIMED_OUT”：
Docker version 18.06.1-ce, build e68fc7a.
使用 linux 容器（默认安装向导设置）。 Docker 检查 containerID 给出："IPAddress": "172.17.0.2"，网络设置：

"NetworkSettings": {
    "Bridge": "",
    "HairpinMode": false,
    "LinkLocalIPv6Address": "",
    "LinkLocalIPv6PrefixLen": 0,
    "Ports": {
        "8080/tcp": null

状态：

"State": {
    "Status": "running",
    "Running": true,
    "Paused": false,
    "Restarting": false,
    "OOMKilled": false,
    "Dead": false,
    "Pid": 2918,
    "ExitCode": 0,
    "Error": "",

连接到 docker tomcat：http://172.17.0.2:8080 错误信息：ERR_CONNECTION_TIMED_OUT

docker 设置中没有代理。

Docker 日志容器 ID：

30-Sep-2018 19:44:54.540 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version:        Apache Tomcat/8.5.34
30-Sep-2018 19:44:54.541 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server built:          Sep 4 2018 22:28:22 UTC
30-Sep-2018 19:44:54.541 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server number:         8.5.34.0
30-Sep-2018 19:44:54.542 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Name:               Linux
30-Sep-2018 19:44:54.542 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Version:            4.9.93-linuxkit-aufs
30-Sep-2018 19:44:54.542 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Architecture:          amd64
30-Sep-2018 19:44:54.542 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Java Home:             /usr/lib/jvm/java-8-openjdk-amd64/jre
30-Sep-2018 19:44:54.542 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Version:           1.8.0_181-8u181-b13-1~deb9u1-b13
30-Sep-2018 19:44:54.543 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Vendor:            Oracle Corporation
30-Sep-2018 19:44:54.543 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_BASE:         /usr/local/tomcat
30-Sep-2018 19:44:54.543 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_HOME:         /usr/local/tomcat
30-Sep-2018 19:44:54.543 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.config.file=/usr/local/tomcat/conf/logging.properties
30-Sep-2018 19:44:54.543 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
30-Sep-2018 19:44:54.544 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djdk.tls.ephemeralDHKeySize=2048
30-Sep-2018 19:44:54.544 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.protocol.handler.pkgs=org.apache.catalina.webresources
30-Sep-2018 19:44:54.544 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dorg.apache.catalina.security.SecurityListener.UMASK=0027
30-Sep-2018 19:44:54.544 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dignore.endorsed.dirs=
30-Sep-2018 19:44:54.544 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.base=/usr/local/tomcat
30-Sep-2018 19:44:54.545 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.home=/usr/local/tomcat
30-Sep-2018 19:44:54.545 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.io.tmpdir=/usr/local/tomcat/temp
30-Sep-2018 19:44:54.545 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent Loaded APR based Apache Tomcat Native library [1.2.17] using APR version [1.5.2].
30-Sep-2018 19:44:54.545 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent APR capabilities: IPv6 [true], sendfile [true], accept filters [false], random [true].
30-Sep-2018 19:44:54.546 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent APR/OpenSSL configuration: useAprConnector [false], useOpenSSL [true]
30-Sep-2018 19:44:54.548 INFO [main] org.apache.catalina.core.AprLifecycleListener.initializeSSL OpenSSL successfully initialized [OpenSSL 1.1.0f  25 May 2017]
30-Sep-2018 19:44:54.609 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-nio-8080"]
30-Sep-2018 19:44:54.614 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read
30-Sep-2018 19:44:54.618 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["ajp-nio-8009"]
30-Sep-2018 19:44:54.619 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read
30-Sep-2018 19:44:54.619 INFO [main] org.apache.catalina.startup.Catalina.load Initialization processed in 320 ms
30-Sep-2018 19:44:54.630 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service [Catalina]
30-Sep-2018 19:44:54.631 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet Engine: Apache Tomcat/8.5.34
30-Sep-2018 19:44:54.652 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/usr/local/tomcat/webapps/host-manager]
30-Sep-2018 19:44:54.835 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/usr/local/tomcat/webapps/host-manager] has finished in [182] ms
30-Sep-2018 19:44:54.835 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/usr/local/tomcat/webapps/ROOT]
30-Sep-2018 19:44:54.843 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/usr/local/tomcat/webapps/ROOT] has finished in [8] ms
30-Sep-2018 19:44:54.844 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/usr/local/tomcat/webapps/manager]
30-Sep-2018 19:44:54.854 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/usr/local/tomcat/webapps/manager] has finished in [10] ms
30-Sep-2018 19:44:54.855 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/usr/local/tomcat/webapps/docs]
30-Sep-2018 19:44:54.862 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/usr/local/tomcat/webapps/docs] has finished in [8] ms
30-Sep-2018 19:44:54.862 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deploying web application directory [/usr/local/tomcat/webapps/examples]
30-Sep-2018 19:44:54.965 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory Deployment of web application directory [/usr/local/tomcat/webapps/examples] has finished in [103] ms
30-Sep-2018 19:44:54.966 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-8080"]30-Sep-2018 19:44:54.973 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["ajp-nio-8009"]
30-Sep-2018 19:44:54.974 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 355 ms

Answer 1

明明是端口映射没做好:

 "Ports": {
        "8080/tcp": null
  }

null表示里面的docker端口8080还没有映射到外面对应的

当端口未映射时，您将无法通过 url 访问它，您将得到 ERR_CONNECTION_TIMED_OUT

因为不清楚你是如何运行你的容器的我只能建议你一个简单而正确的端口映射方法是：

docker run -it --rm -p 8080:8080 tomcat:latest

其中8080外端口映射到内docker tomcat 8080端口，则可以通过localhost:8080

访问

docker 运行 tomcat:latest 连接超时

docker run tomcat:latest connection timeout

docker

connection-timeout