Gitlab Registry Forbidden with managed Kubernetes Cluster


I’m currently trying out the managed Kubernetes Cluster with the Gitlab CI/CD and integrated private Registry. To understand my problem you need to know that I currently have a working Docker Swarm Cluster with that CI/CD and private Registry in use.

However with the managed Kubernetes the Pod Creation is always stuck at “ImagePullBackOff” with following error:

Failed to pull image "<PROJECT-PATH>/<BRANCH>:<COMMIT HASH>": rpc error: code = Unknown desc = Error response from daemon: Get "<PROJECT-PATH>/<BRANCH>:<COMMIT HASH>": denied: access forbidden

I tried it with Helm/Tiller and also with a normal Kubernetes Deploy file. The secret is in the same namespace as the deployment and is working on the mentioned Docker Swarm and on my local machine.

Is DO doing something weird here? Maybe someone of you have more information.

Kind regards, Kai

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I have similiar problem each time i create gitlab registry secrets via kubectl create secret. It just wont pull any image, but when i use this script everything works:

# Create Docker Image Registry secret in Kubernetes
# Usage:
# \
#   LOGIN=<your-username> \
#   PASSWORD=<your-pword> \
#   NAMESPACE=<your namespace> \
#   NAME=<secret-name> \
#   ./
# The same as:
# kubectl create \
#         --namespace=<your-namespace> \
#         secret docker-registry <secret-name> \
#         --docker-server=<your-registry-server> \
#         --docker-username=<your-username> \
#         --docker-password=<your-pword> \

set -eo pipefail

if [ "$1" == "delete" ]; then
  kubectl delete secret \
    --namespace="${NAMESPACE}" \
    "${NAME}" || true

AUTH=$(echo -n ${LOGIN}:${PASSWORD} | base64 -w 0)

export TOKEN=$(envsubst <<<'
' | base64 -w 0)

envsubst <<<'
apiVersion: v1
kind: Secret
  name: ${NAME}
  namespace: ${NAMESPACE}
  .dockerconfigjson: ${TOKEN}
' | kubectl create -f -

I had the same issue but in my case was a typo on the secret namespace. When I fixed that my problem got solved.

Any movement or insight on this?