Kubectl 运行后的 ImagePullBackOff

Question

I am new to Kubernetes. I am using Minikube for Mac with VM hyperkit. I also have docker-desktop installed (in which I have tried both enable/disable Kubernetes).

docker pull is executed smoothly with no error.

but on

kubectl run kubernetes-jenkins --image=jenkins:latest --port=8080 

(or any image, be it gcr.io/google-samples/kubernetes-bootcamp:v1) it fails with ImagePullBackOff

Trimming few parts from kubectl cluster-info dump :

I1230 10:20:56.812648 1 serving.go:312] Generated self-signed cert in-memory W1230 10:20:58.777494 1 configmap_cafile_content.go:102] unable to load initial CA bundle for: "client-ca::kube-system::extension-apiserver-authentication::client-ca-file" due to: configmap "extension-apiserver-authentication" not found W1230 10:20:58.778005 1 configmap_cafile_content.go:102] unable to load initial CA bundle for: "client-ca::kube-system::extension-apiserver-authentication::requestheader-client-ca-file" due to: configmap "extension-apiserver-authentication" not found W1230 10:20:58.849619 1 authorization.go:47] Authorization is disabled W1230 10:20:58.850375 1 authentication.go:92] Authentication is disabled

"reason": "Failed", "message": "Failed to pull image \\"jenkins:latest\\": rpc error: code = Unknown desc = Error response from daemon: Get https://registry-1.docker.io/v2/ : dial tcp: lookup registry-1.docker.io on 192.168.64.1:53: read udp 192.168.64.3:38558-\>192.168.64.1:53: read: connection refused", "source": { "component": "kubelet", "host": "minikube" }

Why kubectl is unable to pull image from the repository?

Answer 1

In minikube your local docker registry docker image can't be found,so you have to set your docker env to use minikube registry for local image you build and pull

eval $(minikube docker-env)

if that doesn't solve your problem, you have to start minikube by telling it's registry

minikube start --vm-driver="virtualbox" --insecure-registry=$(docker-machine ip registry):80