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Add support for running as a init sidecar container (#99)

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Adds support for injecting the client as a [sidecar
container](https://kubernetes.io/docs/concepts/workloads/pods/sidecar-containers/)
using the `netbird.io/init-sidecar: "true"` pod annotation.
This commit is contained in:
Bethuel Mmbaga
2026-02-11 15:20:52 +03:00
committed by GitHub
parent d548240320
commit 5fb144559c
5 changed files with 123 additions and 17 deletions
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internal/webhook/v1/pod_webhook_test.go
+27
View File
@@ -125,6 +125,33 @@ var _ = Describe("Pod Webhook", func() {
Expect(obj.Spec.Containers).To(HaveLen(2))
Expect(obj.Spec.Containers[1].Name).To(Equal("netbird"))
})
It("Should inject NB container as native sidecar when init-sidecar annotation is true", func() {
obj.Annotations[sidecarAnnotation] = "true"
Expect(defaulter.Default(context.Background(), obj)).NotTo(HaveOccurred())
Expect(obj.Spec.Containers).To(HaveLen(1), "original containers should be unchanged")
Expect(obj.Spec.InitContainers).To(HaveLen(1))
Expect(obj.Spec.InitContainers[0].Name).To(Equal("netbird"))
Expect(obj.Spec.InitContainers[0].RestartPolicy).NotTo(BeNil())
Expect(*obj.Spec.InitContainers[0].RestartPolicy).To(Equal(corev1.ContainerRestartPolicyAlways))
})
It("Should inject NB as regular container when init-sidecar annotation is false", func() {
obj.Annotations[sidecarAnnotation] = "false"
Expect(defaulter.Default(context.Background(), obj)).NotTo(HaveOccurred())
Expect(obj.Spec.Containers).To(HaveLen(2))
Expect(obj.Spec.Containers[1].Name).To(Equal("netbird"))
Expect(obj.Spec.InitContainers).To(BeEmpty())
})
It("Should inject NB as regular container when init-sidecar annotation is absent", func() {
delete(obj.Annotations, sidecarAnnotation)
Expect(defaulter.Default(context.Background(), obj)).NotTo(HaveOccurred())
Expect(obj.Spec.Containers).To(HaveLen(2))
Expect(obj.Spec.Containers[1].Name).To(Equal("netbird"))
Expect(obj.Spec.InitContainers).To(BeEmpty())
})
})
})
})