我在基于CentOS 7映像的容器中使用Tomcat 7，但我无法访问任何部署的应用程序。即便如此：从容器运行curl -v 'http://localhost:8080'会返回错误：
* About to connect() to localhost port 8080 (#0)
* Trying 127.0.0.1...
* Connected to localhost (127.0.0.1) port 8080 (#0)
> GET / HTTP/1.1
> User-Agent: curl/7.29.0
> Host: localhost:8080
> Accept: */*
>
< HTTP/1.1 404 Not Found
< Server: Apache-Coyote/1.1
< Content-Length: 0
< Date: Mon, 28 May 2018 13:14:41 GMT
<
* Connection #0 to host localhost left intact
用容器的IP地址localhost替换172.17.0.2会产生同样的错误。
我使用docker run选项-p 28080:8080将容器的8080端口绑定到主机的28080端口，但我也无法从主机访问该服务。但是我尝试在容器中使用nginx并且它工作得很好（我可以从主机和容器访问它）所以我认为它是Tomcat问题而不是Docker。
此外，我运行了nmap，结果如下：
[root@a115404a7a03 /]# nmap -sT -O localhost
Starting Nmap 6.40 ( http://nmap.org ) at 2018-05-28 13:23 UTC
Nmap scan report for localhost (127.0.0.1)
Host is up (0.000070s latency).
Other addresses for localhost (not scanned): 127.0.0.1
Not shown: 993 closed ports
PORT STATE SERVICE
5432/tcp open postgresql
7001/tcp open afs3-callback
7002/tcp open afs3-prserver
7004/tcp open afs3-kaserver
7007/tcp open afs3-bos
8009/tcp open ajp13
8080/tcp open http-proxy
我觉得奇怪的是，端口8080的服务是http-proxy，而不仅仅是http。我没有在Tomcat配置文件中找到任何代理设置，并且未设置环境变量http_proxy。
我在Dockerfile中启用Tomcat服务，如下所示：RUN systemctl enable tomcat.service。
我想也许这可能与我使用代理环境变量集（使用--build-arg）构建映像的事实有关但我从Dockerfile中删除了上面的行并在容器启动后手动启动它跑步，但没有用。
最后一点，我在Tomcat中部署的一个应用程序在部署后运行测试请求，我可以在日志中看到它正在运行，它获得了代码200：
127.0.0.1 - - [28/May/2018:13:03:00 +0000] "GET /rasdaman/ows?service=WCS&version=2.0.1&request=GetCapabilities HTTP/1.1" 200 9420
如果我运行curl -v 'http://localhost:8080/rasdaman/ows?service=WCS&version=2.0.1&request=GetCapabilities但是我收到错误404。
知道发生了什么事吗？
由于
我尝试使用nmap选项运行-sV，这就是我所得到的：
[root@a115404a7a03 /]# nmap -sV -O localhost
Starting Nmap 6.40 ( http://nmap.org ) at 2018-05-28 14:05 UTC
Nmap scan report for localhost (127.0.0.1)
Host is up (0.000060s latency).
Other addresses for localhost (not scanned): 127.0.0.1
Not shown: 993 closed ports
PORT STATE SERVICE VERSION
5432/tcp open postgresql PostgreSQL DB
7001/tcp open afs3-callback?
7002/tcp open afs3-prserver?
7004/tcp open afs3-kaserver?
7007/tcp open afs3-bos?
8009/tcp open ajp13 Apache Jserv (Protocol v1.3)
8080/tcp open http Apache Tomcat/Coyote JSP engine 1.1
它显示http而非http-proxy。
下面是Dockerfile：
FROM centos:7
# Install prerequisites
RUN yum clean all
RUN yum -q -y update
RUN yum -q -y install sudo curl wget less vim unzip
RUN yum -q -y install epel-release
RUN sed -i '/^Defaults.*requiretty$/d' /etc/sudoers
# Instructions at http://rasdaman.org/wiki/InstallFromRPM
RUN curl "http://download.rasdaman.org/packages/rpm/nightly/CentOS/7/x86_64/rasdaman.repo" -o /etc/yum.repos.d/rasdaman.repo
RUN yum clean all
RUN yum -q -y update && yum -y install rasdaman
RUN test -f /etc/profile.d/rasdaman.sh && source /etc/profile.d/rasdaman.sh
# Install python dependencies
RUN pip install glob2
# Enable on startup
RUN systemctl enable postgresql.service
RUN systemctl enable tomcat.service ## I tried with this line commented or not, see above.
RUN systemctl enable rasdaman.service
RUN /etc/init.d/rasdaman start
# Tomcat (localhost:8080/rasdaman/ows)
EXPOSE 8080
RUN yum -q -y install nmap
CMD ["/usr/sbin/init"]
这是Tomcat日志的摘录：
May 30, 2018 8:25:09 AM org.apache.catalina.startup.HostConfig deployWARs
SEVERE: Error waiting for multi-thread deployment of WAR files to complete
java.lang.InterruptedException
at java.util.concurrent.FutureTask.awaitDone(FutureTask.java:404)
at java.util.concurrent.FutureTask.get(FutureTask.java:191)
at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:832)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:495)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1757)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:333)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1370)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1542)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1552)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1520)
at java.lang.Thread.run(Thread.java:748)
May 30, 2018 8:25:11 AM org.apache.catalina.startup.HostConfig deployWAR
INFO: Deployment of web application archive /var/lib/tomcat/webapps/rasdaman.war has finished in 35,256 ms