👀 Views: 82 💬 Answers: 1 📅 Created: 2025-06-16

kubernetes configmap deployment yaml

I recently switched to I'm optimizing some code but I've looked through the documentation and I'm still confused about After trying multiple solutions online, I still can't figure this out... I'm working with an scenario where a Kubernetes pod isn't picking up environment variables defined in a ConfigMap after I made updates to that ConfigMap. I have a deployment that references the ConfigMap for its environment variables, and my expectation is that every time the ConfigMap is updated, the pods will reflect those changes. However, after updating the ConfigMap, I ran the command: ```bash kubectl apply -f my-configmap.yaml ``` and I checked the deployment with: ```bash kubectl get deployment my-deployment -o yaml ``` The ConfigMap is correctly referenced in the deployment YAML, like so: ```yaml apiVersion: apps/v1 kind: Deployment metadata: name: my-deployment spec: template: spec: containers: - name: my-app image: my-image:latest env: - name: MY_ENV_VAR valueFrom: configMapKeyRef: name: my-configmap key: my_key ``` After updating the ConfigMap, I expected to see the new values reflected in the pod's environment. I tried restarting the pods with: ```bash kubectl rollout restart deployment/my-deployment ``` However, when I exec into the pod and run: ```bash echo $MY_ENV_VAR ``` it still shows the old value. I've verified that the ConfigMap contains the updated key-value pair, but the pods do not reflect these changes. I've also checked the pod logs and the events, but there are no clear errors indicating what might be wrong. I'm running Kubernetes version 1.23 and I’ve also confirmed that the ConfigMap is in the same namespace as the deployment. What else can I check to debug this scenario? Is there a specific behavior related to ConfigMaps that I'm missing? My development environment is Ubuntu. Am I missing something obvious? For reference, this is a production REST API. Any suggestions would be helpful. I'm working on a web app that needs to handle this. Thanks for your help in advance!