kubernetes - ConfigMap mount into single file

Question

I'm trying to mount a file using configmap during kubernetes deployment. I have my application properties as data in my configmap. I'm creating configmap using kustomize. Kustomize will help to merge two configmaps. When I build kustomize it returns configmap like

apiVersion: v1
data:
  append.properties: |
    TEST_PROPERTY_1=5
  base.properties: |
    TEST_PROPERTY_2=test
kind: ConfigMap
metadata:
  name: test-configmap

When I mount this config map it will create two different files. But I want to merge into a single file. my application server will expect a single property file. Can someone help this problem?

Does it have to be a file? You can pass them to environment variables? — suren, May 24 '19 at 08:09
@suren My application server will expect it as file. and I have 100+ properties — Dinesh, May 24 '19 at 08:47

score 0 · Answer 1 · answered May 24 '19 at 09:16

0

I'd suggest using a startup script to merge these two files into one property file when the pod startup.

answered May 24 '19 at 09:16

Kun Li

2,570
10
15

score 0 · Answer 2 · answered Jun 05 '19 at 08:56

0

I think config mixin documentation is what you are looking for. You are probably just missing the

behavior: merge

in the configMapGenerator of your overlay.

answered Jun 05 '19 at 08:56

ITChap

4,057
1
21
46

kubernetes - ConfigMap mount into single file

2 Answers2