docker - 无法使用easy_install或pip在CentOS 6.9中安装主管

Question

我正在从CentOS 6创建的Docker容器中工作。Dockerfile基本上是这样的:

FROM centos:centos6
RUN yum update -y && \
    yum install -y epel-release && \
    yum install -y iproute python-setuptools hostname inotify-tools yum-utils which && \
    yum clean all && \
    easy_install supervisor
ADD container-files /
VOLUME ["/data"]
ENTRYPOINT ["/config/bootstrap.sh"]

当我运行 docker build . -t test进行构建并测试图像时，它最终出现以下错误:

...
Searching for supervisor
Reading http://pypi.python.org/simple/supervisor/
Couldn't find index page for 'supervisor' (maybe misspelled?)
Scanning index of all packages (this may take a while)
Reading http://pypi.python.org/simple/
No local packages or download links found for supervisor
error: Could not find suitable distribution for Requirement.parse('supervisor')

我也尝试过先安装pip，然后使用pip安装 super 用户，如下所示:

RUN yum update -y && \
    yum install -y epel-release && \
    yum install -y iproute python-setuptools hostname inotify-tools yum-utils which && \
    yum clean all && \
    easy_install pip && \
    pip install supervisor

在这种情况下，它最终会出现以下错误:

Searching for pip
Reading http://pypi.python.org/simple/pip/
Couldn't find index page for 'pip' (maybe misspelled?)
Scanning index of all packages (this may take a while)
Reading http://pypi.python.org/simple/
No local packages or download links found for pip
error: Could not find suitable distribution for Requirement.parse('pip')

我有互联网连接

我没有任何防火墙和/或代理

我没有任何AV，因为我是从Fedora 27构建容器的。

我没有启用任何IPTables和/或SELinux

其他所有东西都可以正确安装，唯一失败的是supervisor

我在这里想念什么吗？ CentOS6不支持主管吗？什么是正确的安装方式？

Note: I could install directly from repos but the version is really old: supervisor noarch 2.1-9.el6 epel I am pretty sure I will be missing a lot of features

更新:

使用推荐的命令 supervisor安装 pip install supervisor并尝试启动容器 docker run test后，它不起作用，我会看到以下错误:

Traceback (most recent call last):
  File "/usr/bin/supervisord", line 5, in <module>
    from pkg_resources import load_entry_point
  File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 2655, in <module>
    working_set.require(__requires__)
  File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 648, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 546, in resolve
    raise DistributionNotFound(req)
pkg_resources.DistributionNotFound: meld3>=0.6.5

有任何想法吗？

Answer 1

您最初的问题(使用easy_install解决方案)是软件包存储库PyPi现在需要https://连接。 easy_install根本不知道这一点，因此当它尝试联系http://pypi.python.org/simple/supervisor/时，它会得到:

HTTP/1.1 403 SSL is required

所以 easy_install根本行不通。

我不确定是什么导致了有关 meld3软件包的错误，但是无论如何，如果您使用的是EPEL存储库，则最好也安装 python-meld软件包:

FROM centos:centos6
RUN yum update -y && \
    yum install -y epel-release && \
    yum install -y \
      iproute \
      python-setuptools \
      hostname \
      inotify-tools \
      yum-utils \
      which \
      python-meld3 \
      python-pip && \
    yum clean all && \
    pip install supervisor