BC-5423 - Add POD affinity and anti-affinity #2935

mamutmk5 · 2023-12-01T11:52:13Z

Description

To Improve the distribution of PODs to the least number of kubernetes worker nodes who is Required
but also to secure that the PODs of one Deployment are distributed over the Fault Zones and Node pools
the pod affinity and anti affinity are set.

Affernety number calculation:
Assign Number for an host = 0 - 20 X Fault Zone - 10 X Node Pool + 9 X Host
Host = 1 if on the host runs an POD from the Schulcloud-Verbund on any namespace
Host = 0 if on the host runs no POD from the Schulcloud-Verbund on any namespace
Node Pool = 1 if on a host of this node pool runs an POD from the Deployment
Node Pool = 0 if on no host of this node pool runs an POD from the Deployment
Fault Pool = 1 if on a host of this fault zone runs an POD from the Deployment
Fault Pool = 0 if on no host of this fault zone uns an POD from the Deployment

Links to Tickets or other pull requests

Changes

Data-security

Deployment

New Repos, NPM packages or vendor scripts

Screenshots of UI changes

Checklist before merging

QA: In addition to review, the code has been manually tested (if manual testing is possible)
PO: Any deviation from requirements was agreed with Product-Owner / ticket author / support-team
DEV: Every new component is implemented having accessibility in mind (e.g. aria-label, role property)