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cmd/k8s-operator: allow pod tolerations on nameservers (#17260)

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This commit modifies the `DNSConfig` custom resource to allow specifying
[tolerations](https://kubernetes.io/docs/concepts/scheduling-eviction/taint-and-toleration/)
on the nameserver pods.

This will allow users to dictate where their nameserver pods are located
within their clusters.

Fixes: https://github.com/tailscale/tailscale/issues/17092

Signed-off-by: David Bond <davidsbond93@gmail.com>
This commit is contained in:
David Bond
2025-10-17 18:32:30 +01:00
committed by GitHub
parent 6493206ac7
commit 9083ef1ac4
7 changed files with 171 additions and 7 deletions
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43
cmd/k8s-operator/deploy/manifests/operator.yaml
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@@ -431,6 +431,49 @@ spec:
description: Tag defaults to unstable.
type: string
type: object
pod:
description: Pod configuration.
properties:
tolerations:
description: If specified, applies tolerations to the pods deployed by the DNSConfig resource.
items:
description: |-
The pod this Toleration is attached to tolerates any taint that matches
the triple <key,value,effect> using the matching operator <operator>.
properties:
effect:
description: |-
Effect indicates the taint effect to match. Empty means match all taint effects.
When specified, allowed values are NoSchedule, PreferNoSchedule and NoExecute.
type: string
key:
description: |-
Key is the taint key that the toleration applies to. Empty means match all taint keys.
If the key is empty, operator must be Exists; this combination means to match all values and all keys.
type: string
operator:
description: |-
Operator represents a key's relationship to the value.
Valid operators are Exists and Equal. Defaults to Equal.
Exists is equivalent to wildcard for value, so that a pod can
tolerate all taints of a particular category.
type: string
tolerationSeconds:
description: |-
TolerationSeconds represents the period of time the toleration (which must be
of effect NoExecute, otherwise this field is ignored) tolerates the taint. By default,
it is not set, which means tolerate the taint forever (do not evict). Zero and
negative values will be treated as 0 (evict immediately) by the system.
format: int64
type: integer
value:
description: |-
Value is the taint value the toleration matches to.
If the operator is Exists, the value should be empty, otherwise just a regular string.
type: string
type: object
type: array
type: object
replicas:
description: Replicas specifies how many Pods to create. Defaults to 1.
format: int32