Kubectl更新configMap [英] Kubectl update configMap

问题描述

我正在使用以下命令创建configMap.

I am using the following command to create a configMap.

kubectl create configmap test --from-file=./application.properties --from-file=./mongo.properties --from-file=./logback.xml 

现在，我已经从mongo.properties中修改了一个键的值，我需要在kubernetes中对其进行更新.

Now, I have modified a value for a key from mongo.properties which i need to update in kubernetes.

选项1:-

kubectl edit test

在这里，它将打开整个文件.但是，我只想更新mongo.properties，因此只想看mongo.properties.还有其他办法吗?

Here, it opens the entire file. But, I want to just update mongo.properties and hence want to see only the mongo.properties. Is there any other way?

注意:-我不想在单独的configMap中拥有mongo.properties.

Note :- I dont want to have mongo.properties in a separate configMap.

谢谢

推荐答案

不，您不能.

在kubernetes中替换将仅替换该configmap中的所有内容.您不能只更新一个文件或其中的一个属性.

Replace in kubernetes will simply replace everything in that configmap. You can't just update one file or one single property in it.

但是，如果您与客户端Api进行检查，则会发现您是否创建了一个包含大量文件的configmap.然后，这些文件将存储为HashMap，其中key是默认文件名，value是编码为字符串的文件内容.因此，您可以基于HashMap中的现有键值对编写自己的函数.

However, if you check with the client Api, you will find if you create a configmap with lots of files. Then, those files will be stored as a HashMap, where key is file name by default, value is the file content encoded as a string. So you can write your own function based on existing key-value pair in HashMap.

这是我到目前为止所发现的，如果您发现已有解决此问题的方法，请告诉我:)

This is what I found so far, if you find there is already existing method to deal with this issue, please let me know :)

仅供参考，如果您只想更新一个或几个属性，则可以使用补丁.但是，实现起来有点困难.

FYI, if you want to update just one or few properties, it is possible if you use patch. However, it is a little bit hard to implement.

此和此可能会帮助

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