问题
This is a very wried thing.
I created a private GKE cluster with a node pool of 3 nodes. Then I have a replica set with 3 pods. some of these pods will be scheduled to one node.
So one of these pods always get ImagePullBackOff, I check the error
Failed to pull image "bitnami/mongodb:3.6": rpc error: code = Unknown desc = Error response from daemon: Get https://registry-1.docker.io/v2/: net/http: request canceled while waiting for connection (Client.Timeout exceeded while awaiting headers)
And the pods scheduled to the remaining two nodes work well.
I ssh to that node, run docker pull and everything is fine. I cannot find another way to troubleshoot this error.
I tried to drain or delete that node and let the cluster to recreate the node. but it is still not working.
Help me, please.
Update: From GCP documentation, it will fail to pull images from the docker hub.
BUT the weirdest thing is ONLY ONE node is unable to pull the images.
回答1:
There was a related reported bug in Kubernetes 1.11
Make sure it is not your case
来源：https://stackoverflow.com/questions/56558767/one-node-for-a-gke-cluster-cannot-pull-image-from-dockerhub