k8s taint - Shell-Bash

Kubernetes is a powerful container orchestration system that can be used to manage complex containerized applications. One of the features of Kubernetes is taint-based evictions, which allow you to mark nodes as unsuitable for running certain types of pods.

The k8s taint command is a Shell-Bash command that allows you to manipulate taints on Kubernetes nodes from the command line. By using this command, you can add, list, and remove taints on Kubernetes nodes.

Here are some examples of how to use the k8s taint command:

Add a taint to a node

To add a taint to a node, use the k8s taint add command. For example, to add a taint with the key "example.com/foo" and the effect "NoSchedule" to the node "node-1", you can use the following command:

k8s taint add node-1 example.com/foo=NoSchedule

This will add the taint to the node and prevent pods with a matching toleration from running on that node.

List taints on a node

To list the taints on a node, use the k8s taint list command. For example, to list the taints on "node-1", you can use the following command:

k8s taint list node-1

This will display a list of the taints on the node, along with their keys and effects.

Remove a taint from a node

To remove a taint from a node, use the k8s taint remove command. For example, to remove the taint with the key "example.com/foo" from the node "node-1", you can use the following command:

k8s taint remove node-1 example.com/foo

This will remove the taint from the node and allow pods with a matching toleration to run on that node.

In conclusion, the k8s taint command is a handy tool for managing taints on Kubernetes nodes. Whether you need to add, list, or remove taints, this command gives you the ability to do so from the command line.