Skip injection for host network pods #48
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byxorna
approved these changes
Aug 27, 2020
pkg/server/webhook.go
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| @@ -531,6 +531,14 @@ func (whsvr *WebhookServer) mutate(req *v1beta1.AdmissionRequest) *v1beta1.Admis | |||
| } | |||
| } | |||
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| if injectionConfig.SkipHostNetwork && pod.Spec.HostNetwork { | |||
| glog.Infof("Injection skipped by SkipHostNetwork") | |||
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[nit] maybe a more expressive message like "injection skipped due to pod using HostNetwork, and SkipHostNetwork is enabled for this sidecar"?
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Thanks for your review! I've pushed a new commit which prints readable skipping reason, as well as the ns/name of the pod and the name of the sidecar config.
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What and why?
Provide the ability to skip the injection for host network pods.
Some sidecars will run
ip rule,ip routeandiptablesto manipulate traffic to/from the sidecar. This might be dangerous if the pod is runninghostNetwork. It would be great if the injector configuration can be configured to skip the injection for host network pods, just like Istio.Testing Steps
make test)Reviewers
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@byxornaRequest reviews from other people you want to review this PR in the "Reviewers" section on the right.