If a ConfigMap key named config.yaml contains multiple lines, how will it appear inside the container when mounted as a volume?

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Kubernetes - ConfigMaps

If a ConfigMap key named config.yaml contains multiple lines, how will it appear inside the container when mounted as a volume?

AAs a single line with all lines concatenated

BOnly the first line is saved in the file

CAs a multi-line file preserving all lines

DThe file will be empty

Step-by-Step Solution

Solution:

Step 1: Recall ConfigMap multi-line support
ConfigMap values can contain multi-line strings and are preserved exactly when mounted as files.
Step 2: Confirm file content behavior
The file inside the container will have all lines as in the ConfigMap key value, preserving line breaks.
Final Answer:
As a multi-line file preserving all lines -> Option C
Quick Check:
Multi-line ConfigMap values = multi-line files [OK]

Quick Trick: Multi-line ConfigMap values keep line breaks in files [OK]

Common Mistakes:

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