Update cheatsheets

kubectl-taint

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# kubectl taint
+
+> Update the taints on nodes.
+> More information: <https://kubernetes.io/docs/reference/generated/kubectl/kubectl-commands#taint>.
+
+- Apply taint to a node:
+
+`kubectl taint nodes {{node_name}} {{label_key}}={{label_value}}:{{effect}}`
+
+- Remove taint from a node:
+
+`kubectl taint nodes {{node_name}} {{label_key}}:{{effect}}-`
+
+- Remove all taints from a node:
+
+`kubectl taint nodes {{node_name}} {{label_key}}-`