Tag: Docker


oc rsync takes down OKD master processes

It might sound a little weird, but that’s the case. I was trying to setup NFS mount in OKD docker registry (from this tutorial). During oc rsync from inside docker-registry container I found that OKD master processes are down because of heath check thinking that there is some connectivity problem. This arised because oc rsync does not have rate limiting feature and it I fully utilized local network then there is no bandwidth left for the cluster itself. Few things taken out from logs (/var/log/messages): The starting transfer from docker-registry container is at the of 200MB/s. I’m not quite sure


Docker Registry on Ubuntu 20.04

Docker Registry could be useful in various scenarios, but the most common would be containers orchestration software such as Kubernetes, OpenShift/OKD or Nomad. In example environment you could have Gitlab CI pipeline configured to build Docker image and push it to your registry and then let orchestration software to deploy it to a cluster. In order to install internal, private Docker Registry you need to install Docker package first. Then you need to grab certificate and start docker registry container: This way we start a registry container which will always be up and running. We bind it on port 443

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