Cloud Provider (STFC)

Notes for the STFC OpenStack cloud provider compute instances.

Instance base image

The cluster nodes are based on a refined image called rke-k8s-base-ubuntu-docker-20.10.24-b [1]. This special Ubuntu image is also pre-configured to disable automated system updates driven by the provider’s use of the Quattor toolkit (see the provider’s NoQuattor notes).

If the automated updates are not disabled there’s a risk that the node’s Docker service gets regularly stopped and updated.

  • This image MUST be used for all Kubernetes compute instances that you create using Rancher Node Templates.

  • This image should also be used for additional compute resources, like an NFS server providing NFS volumes to the clusters.

  • This image should also be used for the Rancher RKE nodes.

It the image cannot be used for an instance follow the provider’s NoQuattor notes on how to disable automated updates.

Footnotes