Accessing minishift registry from Linux

In the Getting Started guide, we provide instructions on how to setup OpenDevStack on a Windows host. This blog post explores one aspect: accessing the configured docker registry from a Linux Host. It might also be helpful, if you have Rundeck not running on OpenShift.


We assume, that you have set up OpenShift as described in the getting started guide and that you have exposed a route to the minishift internal registry.

Extract the minishift CA certificate

On your linux host, execute

openssl s_client -connect -showcerts < /dev/null 2>/dev/null| sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' > /tmp/minishift.crt

You should now have two PEM encoded certificate in /tmp/minishift.crt. Remove the first one (this is the server certificate) and keep the CA Cert using the editor of your choice.

Make docker recognize the new CA

Docker will recognize all ca certificates that are stored under /etc/docker/certs.d in a special directory structure.

So, we need to set this structure up:

mkdir -p /etc/docker/certs.d/

and copy the CA cert there:

cp /tmp/minishift.crt /etc/docker/certs.d/

Login and test

On Windows, you can get a login token, using oc login -u developer -n default && oc whoami -t. This token, you will need to login to the docker registry.

So, on your Linux box, execute:

docker login -u developer -p "<token-value>"

You should now see a “Login succeeded”.

Try now to pull your cd/jenkins-slave-base image.

docker pull