CODEWITHSUNDEEP
kuberneteskubectl
Farshid
Farshid

Reputation: 5354

What does key mean when creating a kubernetes configmap from a file

I see here a syntax like this:

kubectl create cm configmap4 --from-file=special=config4.txt

I did not find a description of what repetition of = and the special means here. Kubernetes documentation here only denotes one time usage of = after --from-file while creating configmaps in kubectl.

Upvotes: 1

Views: 621

Answers (2)

Abu Hanifa
Abu Hanifa

Reputation: 3047

kubectl create configmap my-config --from-file=path/to/bar

When creating a configmap based on a file, the key will default to the basename of the file, and the value will default to the file content. If the basename is an invalid key, you may specify an alternate key.

Create a new configmap named my-config with specified keys instead of file basenames on disk

kubectl create configmap my-config --from-file=key1=/path/to/bar/file1.txt --from-file=key2=/path/to/bar/file2.txt

Upvotes: 0

Farshid
Farshid

Reputation: 5354

It appears from generating the YAML that this middle key mean all the keys that are being loaded from the file to be nested inside the mentioned key (special keyword in the question example).

It appears like this:

apiVersion: v1
data:
  special: |
    var3=val3
    var4=val4
kind: ConfigMap
metadata:
  creationTimestamp: "2019-06-01T08:20:15Z"
  name: configmap4
  namespace: default
  resourceVersion: "123320"
  selfLink: /api/v1/namespaces/default/configmaps/configmap4
  uid: 1582b155-8446-11e9-87b7-0800277f619d

Upvotes: 2

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