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Reflect the changed behaviour for multiple use of --from-env-file in ConfigMap creation (#32603) 

* Fix 32392 - Reflect the changed behaviour for multiple from-env-file in configmap creation.

* Update content/en/docs/tasks/configure-pod-container/configure-pod-configmap.md

updated suggestions.

Co-authored-by: Qiming Teng <tengqm@outlook.com>

Co-authored-by: Qiming Teng <tengqm@outlook.com>
pull/32618/head
Mitesh Jain 2022-03-29 19:18:46 +05:30 committed by GitHub
parent 4edd7fa89e
commit 7580383a7d
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1 changed files with 6 additions and 9 deletions
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content/en/docs/tasks/configure-pod-container/configure-pod-configmap.md
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@ -218,6 +218,7 @@ Use the option `--from-env-file` to create a ConfigMap from an env-file, for exa
# Download the sample files into `configure-pod-container/configmap/` directory
wget https://kubernetes.io/examples/configmap/game-env-file.properties -O configure-pod-container/configmap/game-env-file.properties
wget https://kubernetes.io/examples/configmap/ui-env-file.properties -O configure-pod-container/configmap/ui-env-file.properties
# The env-file `game-env-file.properties` looks like below
cat configure-pod-container/configmap/game-env-file.properties
@ -255,17 +256,10 @@ data:
lives: "3"
```
{{< caution >}}
When passing `--from-env-file` multiple times to create a ConfigMap from multiple data sources, only the last env-file is used.
{{< /caution >}}
The behavior of passing `--from-env-file` multiple times is demonstrated by:
Starting with Kubernetes v1.23, `kubectl` supports the `--from-env-file` argument to be
specified multiple times to create a ConfigMap from multiple data sources.
```shell
# Download the sample files into `configure-pod-container/configmap/` directory
wget https://kubernetes.io/examples/configmap/ui-env-file.properties -O configure-pod-container/configmap/ui-env-file.properties
# Create the configmap
kubectl create configmap config-multi-env-files \
--from-env-file=configure-pod-container/configmap/game-env-file.properties \
--from-env-file=configure-pod-container/configmap/ui-env-file.properties
@ -288,8 +282,11 @@ metadata:
resourceVersion: "810136"
uid: 252c4572-eb35-11e7-887b-42010a8002b8
data:
allowed: '"true"'
color: purple
enemies: aliens
how: fairlyNice
lives: "3"
textmode: "true"
```