Deployment not running due to ImagePullBackOff reason

I'm trying to create a deployment that is pulling a container image from a private registry.

My deployment.yaml file:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: my-app
  namespace: my-namespace
spec:
  replicas: 1
  selector:
    matchLabels:
      app: my-app
  template:
    metadata:
      labels:
        app: my-app
    spec:
      containers:
        - name: my-app
          image: my-repo/my-app:1.0
      imagePullSecrets:
        - name: regcred

I'm deploying with the following command: kubectl apply -f deployment.yaml -n my-namespace.

The deployment is not running due to the ImagePullBackOff.

I checked available resources to troubleshoot this issue and ruled out the following:

• my image and tag exist in the repo
• the secret works for other images

Pod description wasn't super helpful to me. I see the following:

state: waiting: message: Back-off pulling image "my-repo/my-app:tag" reason: ImagePullBackOff

I don't understand why in the pod description, namespace is listed as 'default'. This is my only remaining straw that I'm grasping to.

apiVersion: v1 kind: Pod metadata: annotations: ..org/containerID: ... ..org/podIP: ... ..org/podIPs: creationTimestamp: "" generateName: ... labels: app: my-app pod-template-hash: ... name: ... namespace: default

I would appreciate any suggestions how to troubleshoot this. Thank you!

Original deployment.yaml did not contain namespace, so the pod was attempting to deploy in the default namespace. The secret was created in a different namespace. Once I added namespace to the manifest, the pod deployed successfully in the specified namespace. My problem was that I was looking for pods in the default namespace and kept on seeing the originally failed deployment. Once I looked in the correct namespace kubectl get pods -n my-namespace, I saw that the pod is running and pulling the correct image.