I have setup a new Kubernetes v1.5 cluster.
I locally created a new docker image using :
# MAIN IMAGE
FROM gcr.io/google_containers/nginx-slimI created it using the command :
docker build -t myapp:1 .I can see that the image is avaiable and running :
docker ps | grep app
d6fc0508e56b myapp:1 "nginx -g 'daemon ..." 31 seconds ago Up 30 seconds 0.0.0.0:32354->80/tcp Now I am trying to use the same image in a kubernetes deployment.
kubectl run app-deployment --image myapp:1 --replicas=1 --port=80But doing so does not start the pod and I get the ERROR :
19s 3s 2 {kubelet 10.0.0.17} spec.containers{app-deployment} Normal Pulling pulling image "myapp:1"
18s 2s 2 {kubelet 10.0.0.17} spec.containers{app-deployment} Warning Failed Failed to pull image "myapp:1": unauthorized: authentication required
18s 2s 2 {kubelet 10.0.0.17} Warning FailedSync Error syncing pod, skipping: failed to "StartContainer" for "app-deployment" with ErrImagePull: "unauthorized: authentication required"The files /root/.docker/config.json & /var/lib/kubelet/.dockercfg are currently empty. Is there something Ive missed in setting up Kubernetes ?
Since you are building a custom docker image, you have to build it in every node of your cluster that the scheduler could put the pod into.
Furthermore, you need yo specify in your PodSpec an imagePullPolicy of ifNotPresent to indicate the kubelet not to try to download your image if it is already present.
This should make your image work, but I strongly suggest you to push your image in a docker registry and let the nodes pull it from there.