GKE集群的一个节点无法从dockerhub提取映像 [英] One node for a GKE cluster cannot pull image from dockerhub
问题描述
这是一件很担心的事情.
This is a very wried thing.
我创建了一个具有3个节点的节点池的私有 GKE集群.然后，我有一个带有3个吊舱的副本集.其中一些吊舱将被安排到一个节点上.
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.
所以这些吊舱之一总是得到ImagePullBackOff，我检查了错误
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)
排定到其余两个节点的Pod可以很好地工作.
And the pods scheduled to the remaining two nodes work well.
我ssh到那个节点，运行docker pull，一切都很好.我找不到其他方法来解决此错误.
I ssh to that node, run docker pull and everything is fine. I cannot find another way to troubleshoot this error.
我尝试drain或delete该节点，并让群集重新创建该节点.但它仍然无法正常工作.
I tried to drain or delete that node and let the cluster to recreate the node. but it is still not working.
请帮助我.
更新: 从GCP 文档，它将无法从Docker集线器中拉取图像.
Update: From GCP documentation, it will fail to pull images from the docker hub.
最奇怪的是，只有一个节点无法拉出图像.
BUT the weirdest thing is ONLY ONE node is unable to pull the images.
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