I want to configure docker inside kubernetes so that it will use http instead of https to pull container from a specific ip.
I can do that locally by adding this line to the docker json config file :
"insecure-registries" : ["mydomain:port"]
I want to make it clear that I it's not about using a private registry, it's about using an insecure one.
How can I do that in kubernetes ?
You need to add your http registry as a insecure-registry (as you mention in your question) to your docker daemon on each kubernetes node (don't forget the workers).
Related
I’m trying to deploy a docker image on a kubernetes cluster. This cluster is on a server accessible via a ssh connection.
Here is the part of the .yaml I use to pull the image :
spec :
containers :
- name : my_image_name
image : my_private_registry/my_image
my_image is stored in a private registry in another server accessible via a ssh connection (with a proxyjump).
I know how to pull an image from a private registry that is on the same server that the kubernetes cluster. But when it is on another server, I don’t. I'm sure that it is possible to configure kubernetes to make it use the ssh connection, but I didn't find ressources helping me to do that. The others private registry are accessible just by a "docker login" command ?
I’ve found a beginning of solution sending the image using a package named « docker_over_ssh », but it was not really appropriate. I’ve found a solution by pushing the image on dockerhub, but I’m sure that we can do better …
Thank you for your help. I’m sure that it is not complicated, but I’m quite new in kubernetes and docker.
It is quite important to understand, that the docker daemon does not run inside kubernetes. So whatever you provide through kubernetes objects (pods, services...) is usually not accessible from outside.
You could provide a mirror registry for your cluster, so that it is accessible in the usual way.
Another option would be to use ssh port forwarding, if the ssh proxy allows that and use the forwarding host as registry.
The official doc provides a way to run docker registry on containers, but given the situation that it is not allowed to run the registry in the container, how to start docker-registry without docker?
There are multiple options. You can use one of the following repository manager to easily setup a docker private registry and use that.
Sonatype nexus
GitLab container registry
I want to use local registery for my kubernetes. I can use How to access private Docker Hub repository from Kubernetes on Vagrant and it works i can pull my image from it but i should use
image: IP_OF_DOCKER_REGISTERY:5000/IMAGE_NAME
But i do not want it. i want to every image pull form my docker registery without assign any IP and port.
What should i do?
How can i use proxy?
What you're asking is not possible out-of-the-box with docker, if you want to use a registry different to Docker hub, you have to specify it as stated in the documentation.
$ docker pull <private_registry>/image_name:tag
Refer to this Github issue for more information
I am trying to use Jenkins to build and push docker images to private registry. However, while trying docker login command, I am getting this error:
http: server gave HTTP response to HTTPS client
I know that this might be happening because the private registry is not added as an insecure registry. But, how I can resolve this in CI pipeline?
Jenkins is set up on a Kubernetes cluster and I am trying to automate the deployment of an application on the cluster.
This has nothing to do with the Jenkins CI pipeline or Kubernetes. Jenkins will not be able to push your images until configure follow either of the below steps
You have two options here
1) Configure your docker client to use the secure registry over HTTPS. This will include setting up self signed certificates or getting certificates from your local certificate authority.
2) Second solution is to use your registry over an unencrypted HTTP connection.
So if you are running docker on kubernetes. You will have to configure the daemon.json file in /etc/docker/daemon.json.
PS: This file might not exist. You will have to create it.
Then add in the below content. Make sure you change the url to match your docker registry
{
"insecure-registries" : ["myregistrydomain.com:5000"]
}
Then restart docker using systemctl restart docker or etc/init.d/docker restart depending on the version of linux distro installed on your cluster
Let me know if you have any questions
I have create a private registry by harbor.
but when I use rancher to update a container, rancher can not pull images.
before this registry.ziztour.com is normal operation.
Rancher registries:
Error:
Manually pull my private registry image successful:
rancher v1.1.0
docker v1.11.2
Better late than never, but when I had issues pulling from a secure registry I solved the issue by creating/modifying the etc/docker/daemon.json file on the rancher server and all rancher hosts and adding the following.
{
"insecure-registries" : [
"<registry-1-ip>",
"<registry-2-ip>"
]
}
Once you've done this run sudo service docker restart
When you add the ip's leave the http:// or https:// off.
Make sure you do this on all your rancher hosts as well as on the rancher server, otherwise it won't work.