👀 Views: 58 💬 Answers: 1 📅 Created: 2025-06-13

kubernetes job configmap Python

I'm following best practices but I need some guidance on I just started working with I'm working on a personal project and I'm running a Kubernetes Job that processes a batch of data, but it keeps failing with the behavior `Back-off restarting failed container`... I've defined the Job in a YAML file and used the `kubectl apply -f job.yaml` command to create it. The Job runs a simple Python script that reads from a mounted ConfigMap and writes to a Persistent Volume Claim (PVC). Here's the relevant portion of my Job definition: ```yaml apiVersion: batch/v1 kind: Job metadata: name: data-processor spec: template: spec: containers: - name: processor image: python:3.9-slim command: ["python", "/scripts/process.py"] volumeMounts: - name: config-volume mountPath: /configs - name: data-volume mountPath: /data restartPolicy: OnFailure volumes: - name: config-volume configMap: name: processing-config - name: data-volume persistentVolumeClaim: claimName: data-pvc ``` When I check the logs using `kubectl logs job/data-processor`, I see the following behavior: ``` FileNotFoundError: [Errno 2] No such file or directory: '/configs/input.txt' ``` I verified that the ConfigMap is created properly with: ```bash kubectl get configmap processing-config -o yaml ``` And I can see that the `input.txt` file is indeed there. However, it seems that the Job is not able to access the ConfigMap during execution. I've also confirmed that the PVC is correctly bound: ```bash kubectl get pvc ``` After some troubleshooting, I tried increasing the resources in the container spec, but the pod still fails with the same behavior. I'm wondering if there's something specific about the way Kubernetes mounts the ConfigMap that I might be missing, or if there are any permissions issues that I need to address. Any insights on how to resolve this scenario would be greatly appreciated! Any help would be greatly appreciated! Is there a simpler solution I'm overlooking? Is this even possible? Thanks in advance! I'm using Python 3.9 in this project. I'd really appreciate any guidance on this.