hshalan
Cadet
Cadet
  • 1,193 Views

EX280 Pod scheduling

Hello Dears,
just preparing for my ex280 exam and i searched the channel and googled for any tips and I keep seeing the topic taint and toleration which I studied it very well, in case I came to a situation where I have to deal with that during the exam, what would be the best approach to handle that ?!

Are we allowed to simply untain the nodes or do we really have to apply toleration to all pods, or shouldn't the approach make any difference in the grading?!

Thanks

Labels (2)
5 Replies
Walid
Flight Engineer Flight Engineer
Flight Engineer
  • 1,185 Views

The exam usually follow realistic situations, so do not expect to untaint control-plane nodes, and if you need to untaint worker nodes, make sure that is actually the intent, think simple "KISS" keep it simple and smart ;-)

also scheduling is not just taints, there are selectors, labels, among other things, start always with the basics and don't panic, and don't complicate things. wish you the best

 

~ Walid - Red Hat Accelerator, DevOps Janitor
hshalan
Cadet
Cadet
  • 1,182 Views

Thanks Walid for opinion :)
For sure no intent to untaint the control plane i meant here the workers ;)
Walid
Flight Engineer Flight Engineer
Flight Engineer
  • 1,179 Views

What I mean is if you find a taint/toleration that does not make sense, you should know what to do. Also, on the subject of taints, check out that realistic solution Critical DaemonSets Missing Universal Toleration 

~ Walid - Red Hat Accelerator, DevOps Janitor
JL777
Mission Specialist
Mission Specialist
  • 907 Views

Instead of untainting worker nodes, can we add tolerations on deployment?

I always thought CP or Worker nodes should NOT be touched(at least for the exam). Only mess with resources. Not sure how to approach to this ??!!

dkcbk
Flight Engineer
Flight Engineer
  • 875 Views

I have the same question. How should we know which option is correct? Instructions can be very unclear so I am really concerned.
Join the discussion
You must log in to join this conversation.