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cmd/k8s-operator: default nameserver image to tailscale/k8s-nameserver:unstable (#11991)

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We are now publishing nameserver images to tailscale/k8s-nameserver,
so we can start defaulting the images if users haven't set
them explicitly, same as we already do with proxy images.

The nameserver images are currently only published for unstable
track, so we have to use the static 'unstable' tag.
Once we start publishing to stable, we can make the operator
default to its own tag (because then we'll know that for each
operator tag X there is also a nameserver tag X as we always
cut all images for a given tag.

Updates tailscale/tailscale#10499

Signed-off-by: Irbe Krumina <irbe@tailscale.com>
This commit is contained in:
Irbe Krumina 2024-05-09 07:29:10 +01:00 committed by GitHub
parent 8f7f9ac17e
commit b5dbf155b1
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GPG Key ID: B5690EEEBB952194
2 changed files with 19 additions and 2 deletions
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12
cmd/k8s-operator/nameserver.go
View File

@ -41,6 +41,12 @@
messageNameserverCreationFailed = "Failed creating nameserver resources: %v"
messageMultipleDNSConfigsPresent = "Multiple DNSConfig resources found in cluster. Please ensure no more than one is present."
defaultNameserverImageRepo = "tailscale/k8s-nameserver"
// TODO (irbekrm): once we start publishing nameserver images for stable
// track, replace 'unstable' here with the version of this operator
// instance.
defaultNameserverImageTag = "unstable"
)
// NameserverReconciler knows how to create nameserver resources in cluster in
@ -163,11 +169,13 @@ func (a *NameserverReconciler) maybeProvision(ctx context.Context, tsDNSCfg *tsa
ownerRefs: []metav1.OwnerReference{*metav1.NewControllerRef(tsDNSCfg, tsapi.SchemeGroupVersion.WithKind("DNSConfig"))},
namespace: a.tsNamespace,
labels: labels,
imageRepo: defaultNameserverImageRepo,
imageTag: defaultNameserverImageTag,
}
if tsDNSCfg.Spec.Nameserver.Image.Repo != "" {
if tsDNSCfg.Spec.Nameserver.Image != nil && tsDNSCfg.Spec.Nameserver.Image.Repo != "" {
dCfg.imageRepo = tsDNSCfg.Spec.Nameserver.Image.Repo
}
if tsDNSCfg.Spec.Nameserver.Image.Tag != "" {
if tsDNSCfg.Spec.Nameserver.Image != nil && tsDNSCfg.Spec.Nameserver.Image.Tag != "" {
dCfg.imageTag = tsDNSCfg.Spec.Nameserver.Image.Tag
}
for _, deployable := range []deployable{saDeployable, deployDeployable, svcDeployable, cmDeployable} {

9
cmd/k8s-operator/nameserver_test.go
View File

@ -115,4 +115,13 @@ func TestNameserverReconciler(t *testing.T) {
Data: map[string]string{"records.json": string(bs)},
}
expectEqual(t, fc, wantCm, nil)
// Verify that if dnsconfig.spec.nameserver.image.{repo,tag} are unset,
// the nameserver image defaults to tailscale/k8s-nameserver:unstable.
mustUpdate(t, fc, "", "test", func(dnsCfg *tsapi.DNSConfig) {
dnsCfg.Spec.Nameserver.Image = nil
})
expectReconciled(t, nr, "", "test")
wantsDeploy.Spec.Template.Spec.Containers[0].Image = "tailscale/k8s-nameserver:unstable"
expectEqual(t, fc, wantsDeploy, nil)
}