在主管中使用docker环境-e变量 [英] Using docker environment -e variable in supervisor

问题描述

我一直试图通过 -e 选项将一个环境变量传递给Docker容器。该变量旨在用于容器内的主管脚本。不幸的是，变量没有得到解决（例如，它们保留为 $ INSTANCENAME ）。我试过 $ {var} 和$ {var}，但这也没有帮助。有没有什么可以做的或者这是不可能的？

I've been trying to pass in an environment variable to a Docker container via the -e option. The variable is meant to be used in a supervisor script within the container. Unfortunately, the variable does not get resolved (i.e. they stay for instance$INSTANCENAME). I tried ${var} and "${var}", but this didn't help either. Is there anything I can do or is this just not possible?

码头运行命令：

sudo docker run -d -e "INSTANCENAME=instance-1" -e "FOO=2" -v /var/app/tmp:/var/app/tmp -t myrepos/app:tag

和主管文件：

[program:app]
command=python test.py --param1=$FOO
stderr_logfile=/var/app/log/$INSTANCENAME.log
directory=/var/app
autostart=true

推荐答案

p>该变量正在传递给您的容器，但是管理员不会在配置文件中使用这样的环境变量。

The variable is being passed to your container, but supervisor doesn't let use environment variables like this inside the configuration files.

您应该查看主管文档，特别是有关字符串表达式的部分。例如，对于命令选项：

You should review the supervisor documentation, and specifically the parts about string expressions. For example, for the command option:

请注意，命令可能包括Python字符串表达式，例如 / path / to / programname --port = 80％（process_num）02d 可能会扩展到 / path / to / programname --port = / code>在运行时。

Note that the value of command may include Python string expressions, e.g. /path/to/programname --port=80%(process_num)02d might expand to /path/to/programname --port=8000 at runtime.

字符串表达式是针对包含密钥 group_name ， host_node_name ， process_num ， program_name ，这里（supervisord配置文件的目录）和所有的supervisord的环境变量前缀为 ENV _ 。

String expressions are evaluated against a dictionary containing the keys group_name, host_node_name, process_num, program_name, here (the directory of the supervisord config file), and all supervisord’s environment variables prefixed with ENV_.

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