Kubernetes: Remove taint from node

2 min read | by Jordi Prats

With a taint on a node we can repel Pods as we saw on the post regarding taints and tolerations. So, if we want to taint a node we use kubectl taint as follows:

$ kubectl taint nodes minikube application=example:NoSchedule node/minikube tainted 

How do we untaint a node?

We can use kubectl taint but adding an hyphen at the end to remove the taint (untaint the node):

$ kubectl taint nodes minikube application=example:NoSchedule- node/minikubee untainted 

If we don't know the command used to taint the node we can use kubectl describe node to get the exact taint we'll need to use to untaint the node:

$ kubectl describe node minikube Name: minikube Roles: control-plane,master Labels: beta.kubernetes.io/arch=amd64  beta.kubernetes.io/os=linux  kubernetes.io/arch=amd64  kubernetes.io/hostname=minikube  kubernetes.io/os=linux  minikube.k8s.io/commit=a03fbcf166e6f74ef224d4a63be4277d017bb62e  minikube.k8s.io/name=minikube  minikube.k8s.io/updated_at=2021_09_02T15_54_26_0700  minikube.k8s.io/version=v1.22.0  node-role.kubernetes.io/control-plane=  node-role.kubernetes.io/master=  node.kubernetes.io/exclude-from-external-load-balancers= Annotations: kubeadm.alpha.kubernetes.io/cri-socket: /var/run/dockershim.sock  node.alpha.kubernetes.io/ttl: 0  volumes.kubernetes.io/controller-managed-attach-detach: true CreationTimestamp: Thu, 02 Sep 2021 15:53:58 +0200 Taints: group=ampa:NoSchedule Unschedulable: false (...) 

Based on the taint we see the command we need to use to remove it is:

$ kubectl taint nodes minikube group=ampa:NoSchedule- node/minikube untainted 

Posted on 13/09/2021

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