Faster images download
The images registry is normally a single web app which is not scalable, and several gigabyte images can take a long time to be downloaded. In our cluster we're running the UBER Kraken - a peer-to-peer layer that caches images layers on cluster nodes and provides significantly improved download speed.
Currently it's set up to serve the images from the following registries:
| Registry | Prefix |
|---|---|
| gitlab-registry.nrp-nautilus.io/prp | prp |
| gitlab-registry.nrp-nautilus.io/nrp | nrp |
| gitlab-registry.nrp-nautilus.io/ar-noc | ar-noc |
| gitlab-registry.nrp-nautilus.io/madany | madany |
| gitlab-registry.nrp-nautilus.io/casper | casper |
| gitlab-registry.nrp-nautilus.io/jed | jed |
| gitlab-registry.nrp-nautilus.io/suave | suave |
| gitlab-registry.nrp-nautilus.io/ar-noc | ar-noc |
| gitlab-registry.nrp-nautilus.io/usra | usra |
| docker hub (hub.docker.io) official images | library |
| docker hub (hub.docker.io) user images |
If you need some other image cached, let us know in Matrix.
The way to use kraken is to specify the image as localhost:30081/prefix/<your_image>, for example gitlab-registry.nrp-nautilus.io/prp/jupyter:latest becomes localhost:30081/prp/jupyter:latest. For user-uploaded docker hub images use the user name as prefix. Nodes will download and cache your image, and next time the download to another node will be much faster.