Merge pull request #91556 from mburke5678/mco-taint-daemonset

mburke5678 · web-flow · commit 8ca7db242711 · 2025-06-27T16:50:43.000-04:00
Tainting nodes fail for Daemonsets
diff --git a/modules/binding-infra-node-workloads-using-taints-tolerations.adoc b/modules/binding-infra-node-workloads-using-taints-tolerations.adoc
@@ -78,6 +78,8 @@ spec:
 +
 These examples place a taint on `node1` that has the `node-role.kubernetes.io/infra` key and the `NoSchedule` taint effect. Nodes with the `NoSchedule` effect schedule only pods that tolerate the taint, but allow existing pods to remain scheduled on the node. 
 +
+If you added a `NoSchedule` taint to the infrastructure node, any pods that are controlled by a daemon set on that node are marked as `misscheduled`. You must either delete the pods or add a toleration to the pods as shown in the Red Hat Knowledgebase solution link:https://access.redhat.com/solutions/6592171[add toleration on `misscheduled` DNS pods]. Note that you cannot add a toleration to a daemon set object that is managed by an operator.
++
 [NOTE]
 ====
 If a descheduler is used, pods violating node taints could be evicted from the cluster.

Original file line number	Diff line number	Diff line change
`@@ -78,6 +78,8 @@ spec:`
`78`	`78`	`+`
`79`	`79`	These examples place a taint on `node1` that has the `node-role.kubernetes.io/infra` key and the `NoSchedule` taint effect. Nodes with the `NoSchedule` effect schedule only pods that tolerate the taint, but allow existing pods to remain scheduled on the node.
`80`	`80`	`+`
	`81`	+If you added a `NoSchedule` taint to the infrastructure node, any pods that are controlled by a daemon set on that node are marked as `misscheduled`. You must either delete the pods or add a toleration to the pods as shown in the Red Hat Knowledgebase solution link:https://access.redhat.com/solutions/6592171[add toleration on `misscheduled` DNS pods]. Note that you cannot add a toleration to a daemon set object that is managed by an operator.
	`82`	`++`
`81`	`83`	`[NOTE]`
`82`	`84`	`====`
`83`	`85`	`If a descheduler is used, pods violating node taints could be evicted from the cluster.`