Fixing duplicate UID ranges on OpenShift namespaces after migration

When a Namespace is created in OpenShift, it is assigned a unique User Id (UID) range, a Supplemental Group (GID) range, and unique SELinux MCS labels. They are stored in the metadata.annotations field of the Namespace. Everytime a new Namespace is created, OpenShift assigns it a new range from its available pool of UIDs and updates the metadata.annotations field to reflect the assigned values. However, if the Namespace resource already has those annotations set, OpenShift does not re-assign new values for the Namespace....

January 26, 2022 · Pranav Gaikwad

Using Single Node OpenShift for Development

Introduction Single Node OpenShift is a new offering that also works great for development, although it does require some planning and preparation before using it for the first time. You will need to provide 8 vCPU, 32GB of RAM, and 120GB of storage at a minimum. Decide where you want to run SNO after reviewing the minimum requiremnents Configuring a static lease is helpful but not required Configuring DNS entries is preferable, but again optional Minimum Requirements:...

November 3, 2021 · Jason Montleon