Friday, 22 March 2019

Tainting and "untainting" nodes in a Kubernetes cluster

Having been tinkering with the taint function on an x86 node in an IBM Kubernetes Service (IKS) cluster, to force my pods to deploy onto another node in the same cluster: -

kubectl taint node node1 node1=DoNotSchedulePods:NoExecute

I was looking for an easy way to reverse the taint ( "untaint" ), and found this: -

kubectl patch node node1 -p '{"spec":{"taints":[]}}'

with thanks to this: -

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Note to self - use kubectl to query images in a pod or deployment

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