如何在Amazon Linux 2 AMI上安装pythonocc-core？

Question

我有一个Django应用程序，它被部署到Elastic Beanstalk，Amazon Linux 2 AMI，我对AWS非常陌生。我必须在我的应用程序中使用pythonocc-core包，并且我不能通过pip安装它。如果我通过SSH登录一个实例并手动安装它，这将不是一个很好的方法，因为它会自动扩展EB环境。我添加了下面用于安装anaconda的.config文件，并且我的部署成功。

commands:
  00_download_conda:
    command: 'wget https://repo.anaconda.com/archive/Anaconda3-2020.02-Linux-x86_64.sh'
    test: test ! -d /anaconda
  01_install_conda:
    command: 'bash Anaconda3-2020.02-Linux-x86_64.sh -b -f -p /anaconda'
    test: test ! -d /anaconda
  02_create_home:
    command: 'mkdir -p /home/wsgi'

当我将以下命令行添加到此.config文件的后续部分时，部署失败。

commands:
  03_conda_create: 
    command: conda create --name=whatever-name python=3.7
  04_conda_activate: 
    command: source activate whatever-name
  05_conda_install: 
    command: conda install -c dlr-sc pythonocc-core=7.4.0

但是我得到了一个如下所示的错误。

Traceback (most recent call last):
  File "/opt/aws/bin/cfn-init", line 171, in <module>
    worklog.build(metadata, configSets)
  File "/usr/lib/python2.7/site-packages/cfnbootstrap/construction.py", line 129, in build
    Contractor(metadata).build(configSets, self)
  File "/usr/lib/python2.7/site-packages/cfnbootstrap/construction.py", line 530, in build
    self.run_config(config, worklog)
  File "/usr/lib/python2.7/site-packages/cfnbootstrap/construction.py", line 542, in run_config
    CloudFormationCarpenter(config, self._auth_config).build(worklog)
  File "/usr/lib/python2.7/site-packages/cfnbootstrap/construction.py", line 260, in build
    changes['commands'] = CommandTool().apply(self._config.commands)
  File "/usr/lib/python2.7/site-packages/cfnbootstrap/command_tool.py", line 117, in apply
    raise ToolError(u"Command %s failed" % name)
ToolError: Command 03_conda_create failed

如何解决此问题？

Answer 1

一个不错的方法是在.ebextensions文件夹中使用Commands。

例如，您可以有一个文件.ebextensions/10_install_pythonocc.config

commands:
  10_conda_create: 
    command: conda create --name=whatever-name python=3.7
  20_conda_activate: 
    command: source activate whatever-name
  30_conda_install: 
    command: conda install -c dlr-sc pythonocc-core=7.4.0

关于anaconda本身，here是可以尝试的指令。