tomcat - 无法在 docker : "Permission denied" 中启动 tomcat

Question

我有以下 docker 文件:

FROM debian:jessie
RUN apt-get update && apt-get install -y wget

RUN wget --quiet http://www.us.apache.org/dist/tomcat/tomcat-8/v8.5.20/bin/apache-tomcat-8.5.20.tar.gz -O /tmp/tomcat.tar.gz
RUN cd /tmp && tar xf tomcat.tar.gz
RUN mv /tmp/apache-tomcat-8.5.20 /usr/share/
RUN adduser --system --shell /bin/bash --gecos 'Tomcat Java Servlet and JSP engine' --group --disabled-password --home /home/tomcat tomcat
RUN chown -R tomcat:tomcat /usr/share/apache-tomcat-8.5.20/*
RUN chmod +x /usr/share/apache-tomcat-8.5.20/bin/*.sh

RUN apt-get update && apt-get install -y openjdk-7-jre-headless

CMD ["/bin/bash"]

如果我在笔记本电脑上用 Ubuntu 17.04 和 docker 1.12.6 编译它，构建 78d1802，我可以执行

su tomcat -c /usr/share/apache-tomcat-8.5.20/bin/startup.sh

没有任何问题:

$ sudo docker run -it ff1323fadc66
root@728de06f43be:/# su tomcat -c /usr/share/apache-tomcat-8.5.20/bin/startup.sh
Using CATALINA_BASE:   /usr/share/apache-tomcat-8.5.20
Using CATALINA_HOME:   /usr/share/apache-tomcat-8.5.20
Using CATALINA_TMPDIR: /usr/share/apache-tomcat-8.5.20/temp
Using JRE_HOME:        /usr
Using CLASSPATH:       /usr/share/apache-tomcat-8.5.20/bin/bootstrap.jar:/usr/share/apache-tomcat-8.5.20/bin/tomcat-juli.jar
Tomcat started.

但是，如果我在 Ubuntu 16.04 LTS 和 docker 1.12.6 上尝试相同的构建 78d1802，它托管在 AWS 上，我会得到以下输出:

$ sudo docker run -it 96e0e82a9dda
root@f8f7d3fd6917:/# su tomcat -c /usr/share/apache-tomcat-8.5.20/bin/startup.sh
Using CATALINA_BASE:   /usr/share/apache-tomcat-8.5.20
Using CATALINA_HOME:   /usr/share/apache-tomcat-8.5.20
Using CATALINA_TMPDIR: /usr/share/apache-tomcat-8.5.20/temp
Using JRE_HOME:        /usr
Using CLASSPATH:       /usr/share/apache-tomcat-8.5.20/bin/bootstrap.jar:/usr/share/apache-tomcat-8.5.20/bin/tomcat-juli.jar
touch: cannot touch '/usr/share/apache-tomcat-8.5.20/logs/catalina.out': Permission denied
/usr/share/apache-tomcat-8.5.20/bin/catalina.sh: 434: /usr/share/apache-tomcat-8.5.20/bin/catalina.sh: cannot create /usr/share/apache-tomcat-8.5.20/logs/catalina.out: Permission denied

这怎么可能？ docker 文件不应该产生相同的环境吗？我还在 MacOS 上尝试过它，它也像魅力一样在那里启动 tomcat。

我已经尝试使用 chmod 777/usr/share/apache-tomcat-8.5.20/logs/ 来规避此问题，但它也没有用。

编辑:

根据 ls -alh/usr/share/apache-tomcat-8.5.20/logs/ 的输出要求

root@ce87bb8feb9b:/# su tomcat -c /usr/share/apache-tomcat-8.5.20/bin/startup.sh
Using CATALINA_BASE:   /usr/share/apache-tomcat-8.5.20
Using CATALINA_HOME:   /usr/share/apache-tomcat-8.5.20
Using CATALINA_TMPDIR: /usr/share/apache-tomcat-8.5.20/temp
Using JRE_HOME:        /usr
Using CLASSPATH:       /usr/share/apache-tomcat-8.5.20/bin/bootstrap.jar:/usr/share/apache-tomcat-8.5.20/bin/tomcat-juli.jar
touch: cannot touch '/usr/share/apache-tomcat-8.5.20/logs/catalina.out': Permission denied
/usr/share/apache-tomcat-8.5.20/bin/catalina.sh: 434: /usr/share/apache-tomcat-8.5.20/bin/catalina.sh: cannot create /usr/share/apache-tomcat-8.5.20/logs/catalina.out: Permission denied
root@ce87bb8feb9b:/# ls -alh /usr/share/apache-tomcat-8.5.20/logs/
total 8.0K
drwxr-x---  2 tomcat tomcat 4.0K Aug  2 21:35 .
drwxr-xr-x 17 root   root   4.0K Sep  6 06:58 ..
root@ce87bb8feb9b:/# 

此外:当然可以在不切换用户的情况下启动tomcat然后使用root，但我宁愿避免这种情况。

编辑2:

主机是 Ubuntu 16.04.3 LTS:

$ cat /etc/os-release 
NAME="Ubuntu"
VERSION="16.04.3 LTS (Xenial Xerus)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 16.04.3 LTS"
VERSION_ID="16.04"
HOME_URL="http://www.ubuntu.com/"
SUPPORT_URL="http://help.ubuntu.com/"
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/"
VERSION_CODENAME=xenial
UBUNTU_CODENAME=xenial

它还有一个开发日志:

$ ls -l /run/systemd/journal/dev-log 
srw-rw-rw- 1 root root 0 Sep  5 13:13 /run/systemd/journal/dev-log

Answer 1

所以这个似乎是最奇怪的一个，我不确定这不起作用的根本原因，但下面的选项对你有用

将用户更改为tomcat，然后解压文件夹

FROM debian:jessie
RUN apt-get update && apt-get install -y wget openjdk-7-jre-headless

RUN adduser --system --shell /bin/bash --gecos 'Tomcat Java Servlet and JSP engine' --group --disabled-password --home /home/tomcat tomcat
USER tomcat
RUN wget --quiet http://www.us.apache.org/dist/tomcat/tomcat-8/v8.5.20/bin/apache-tomcat-8.5.20.tar.gz -O /tmp/tomcat.tar.gz && cd /tmp && tar xf tomcat.tar.gz && mv /tmp/apache-tomcat-8.5.20/ /tomcat
USER root
CMD ["/bin/bash"]

删除日志文件夹并重新创建

FROM debian:jessie
RUN apt-get update && apt-get install -y wget openjdk-7-jre-headless

RUN adduser --system --shell /bin/bash --gecos 'Tomcat Java Servlet and JSP engine' --group --disabled-password --home /home/tomcat tomcat
RUN wget --quiet http://www.us.apache.org/dist/tomcat/tomcat-8/v8.5.20/bin/apache-tomcat-8.5.20.tar.gz -O /tmp/tomcat.tar.gz && cd /tmp && tar xf tomcat.tar.gz && mv /tmp/apache-tomcat-8.5.20/ /tomcat
RUN rm -rf /tomcat/logs && chown -R tomcat:tomcat /tomcat && su tomcat -c "mkdir /tomcat/logs"
CMD ["/bin/bash"]

以上解决方案适用于您的情况。两个操作系统中行为不同的根本原因尚不清楚

为任何有兴趣调试的人粘贴垃圾箱

strace su tomcat -c/tomcat/logs/text.txt

https://pastebin.com/vVBEXJQ1

实际使用的最终 dockerfile

https://pastebin.com/H5AVt9P5