如何通过命令行将参数传递给Kubernetes或OpenShift中的Docker容器? [英] How to pass arguments to Docker container in Kubernetes or OpenShift through command line?

问题描述

我在Docker映像中有一个bash脚本，可以通过 docker run 向其传递命令行参数(已在 ENTRYPOINT 中指定了bash脚本和默认参数)在 CMD 中使用，就像在 answer 中一样.所以我会运行类似的

I have a bash script in a Docker image to which I can pass a command line argument through docker run (having specified the bash script in ENTRYPOINT and a default parameter in CMD like in this answer). So I would run something like

docker run my_docker_test argument_1

现在，我想将多个(大约50个)容器部署到OpenShift或Kubernetes，每个容器具有不同的参数值.我知道在Kubernetes中我可以在对象配置yaml文件中指定 command 和 args .是否有可能像 docker run 中那样直接从命令行传递参数，例如传递给 kubectl 或 oc ，而无需每次我想更改参数值时都创建新的Yaml文件吗?

Now I would like to deploy multiple (ca. 50) containers to OpenShift or Kubernetes, each with a different value of the argument. I understand that in Kubernetes I could specify the command and args in the object configuration yaml file. Is there a possibility to pass the argument directly from the command line like in docker run, e.g. passing to kubectl or oc, without the need to create a new yaml file each time I want to change the value of the argument?

推荐答案

以下命令应执行以下操作:

The following command should do it:

kubectl run my-app --image=my_docker_test -- argument_1

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