问题
I am planning to deploy an application in my kubernetes-clustering infra. I pushed image to dockerhub repo. How can I pull image from dockerhub?
回答1:
One line command to create a Docker registry secret
kubectl create secret docker-registry regcred --docker-username=<your-name> --docker-password=<your-pword> --docker-email=<your-email> -n <your-namespace>
Then you can use it in your deployment file under spec
spec:
containers:
- name: private-reg-container-name
image: <your-private-image>
imagePullSecrets:
- name: regcred
More details: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/#create-a-secret-in-the-cluster-that-holds-your-authorization-token
回答2:
Kubernetes run docker pull pseudo/your-image:latest
under the hood. image
field in Kubernetes resources is simply the docker image to run.
spec:
containers:
- name: app
image: pseudo/your-image:latest
[...]
As the docker image name contains no specific docker registry url, the default is docker.io. Your image is in fact docker.io/pseudo/your-image:latest
If your image is hosted in a private docker hub repo, you need to specify an image pull secret in the spec field.
spec:
containers:
- name: app
image: pseudo/your-image:latest
imagePullSecrets:
- name: dockerhub-credential
Here is the documentation to create the secret containing your docker hub login: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
来源:https://stackoverflow.com/questions/49032812/how-to-pull-image-from-dockerhub-in-kubernetes