kubectl-view-webhook

Visualize your webhook configurations in Kubernetes.

kubectl-view-webhook
- Installation
- Usage
  - Table details
- License

Installation

Go binaries are automatically built with each release by GoReleaser. These can be accessed on the GitHub releases page for this project.

There are several ways to install view-webhook. The recommended installation method is via krew.

Via Go

$ go get https://github.com/Trendyol/kubectl-view-webhook

Via source code

Option 1 (if you have a Go compiler and want to tweak the code):

$ git clone https://github.com/Trendyol/kubectl-view-webhook
$ cd kubectl-view-webhook
$ go build .

Via krew

Krew is a kubectl plugin manager. If you have not yet installed krew, get it at kubernetes-sigs/krew. Then installation is as simple as :

$ kubectl krew install view-webhook
$ kubectl view-webhook --help

Usage

By default, view-webhook will display all the Validating&Mutating Admission webhooks that available on your cluster.Also, you can get the detail of each one of them by giving its name.

$ kubectl view-webhook [flags]
$ kubectl view-webhook NAME [flags]

Table details

| Kind                                      | Name                       | Webhook             | Service                    | Resources                                    | Operations                                  | Remaing Day        | Active Namespaces    |
|-------------------------------------------|----------------------------|---------------------|----------------------------|----------------------------------------------|---------------------------------------------|--------------------|----------------------|
| Type of the webhook (Mutating/Validating) | Name of the webhook config | Name of the webhook | service details of webhook | Kubernetes Resources which webhook interests | Kubernetes Operations(CREATE/UPDATE/DELETE) | Cert Remaining Day | Activated namespaces |

License

This repository is available under the Apache License 2.0.

Crash on usage

Describe the bug

% k view-webhook                                                                                                
W1002 10:10:34.102548   96545 warnings.go:67] admissionregistration.k8s.io/v1beta1 MutatingWebhookConfiguration is deprecated in v1.16+, unavailable in v1.22+; use admissionregistration.k8s.io/v1 MutatingWebhookConfiguration
W1002 10:10:34.162715   96545 warnings.go:67] admissionregistration.k8s.io/v1beta1 ValidatingWebhookConfiguration is deprecated in v1.16+, unavailable in v1.22+; use admissionregistration.k8s.io/v1 ValidatingWebhookConfiguration
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x18 pc=0x1e96c8a]

goroutine 1 [running]:
github.com/Trendyol/kubectl-view-webhook/pkg/k8s.retrieveValidDateCount(0x0, 0x0, 0x0, 0x0)
	/home/runner/work/kubectl-view-webhook/kubectl-view-webhook/pkg/k8s/webhook.go:257 +0x4a
github.com/Trendyol/kubectl-view-webhook/pkg/k8s.(*WebHookClient).fillMutatingWebhookConfigurations(0xc000353d60, 0x0, 0x0, 0x0, 0x0, 0xc00056cae0, 0x21, 0x0, 0x0, 0x0, ...)
	/home/runner/work/kubectl-view-webhook/kubectl-view-webhook/pkg/k8s/webhook.go:112 +0x2b3
github.com/Trendyol/kubectl-view-webhook/pkg/k8s.(*WebHookClient).Run(0xc000353d60, 0x2cf9798, 0x0, 0x0, 0xb, 0x2237d5a, 0x5)
	/home/runner/work/kubectl-view-webhook/kubectl-view-webhook/pkg/k8s/webhook.go:70 +0x208
github.com/Trendyol/kubectl-view-webhook/cmd.(*ViewWebhookOptions).Run(0xc0003e37a0, 0xc0003c7340, 0x2cf9798)
	/home/runner/work/kubectl-view-webhook/kubectl-view-webhook/cmd/root.go:139 +0xa5
github.com/Trendyol/kubectl-view-webhook/cmd.NewCmdViewWebhook.func1(0xc0003c7340, 0x2cf9798, 0x0, 0x0, 0x0, 0x0)
	/home/runner/work/kubectl-view-webhook/kubectl-view-webhook/cmd/root.go:70 +0x78
github.com/spf13/cobra.(*Command).execute(0xc0003c7340, 0xc00003a1d0, 0x0, 0x0, 0xc0003c7340, 0xc00003a1d0)
	/home/runner/go/pkg/mod/github.com/spf13/[email protected]/command.go:850 +0x47c
github.com/spf13/cobra.(*Command).ExecuteC(0xc0003c7340, 0xc00000e010, 0x23d6aa0, 0xc00000e018)
	/home/runner/go/pkg/mod/github.com/spf13/[email protected]/command.go:958 +0x375
github.com/spf13/cobra.(*Command).Execute(...)
	/home/runner/go/pkg/mod/github.com/spf13/[email protected]/command.go:895
main.main()
	/home/runner/work/kubectl-view-webhook/kubectl-view-webhook/main.go:36 +0x167

% k version                                                                                                 
Client Version: version.Info{Major:"1", Minor:"21", GitVersion:"v1.21.2", GitCommit:"092fbfbf53427de67cac1e9fa54aaa09a28371d7", GitTreeState:"clean", BuildDate:"2021-06-16T12:59:11Z", GoVersion:"go1.16.5", Compiler:"gc", Platform:"darwin/amd64"}
Server Version: version.Info{Major:"1", Minor:"21", GitVersion:"v1.21.4-gke.1801", GitCommit:"589503e56a4fd76a38f277d6fb11bd6ec4931482", GitTreeState:"clean", BuildDate:"2021-09-14T03:52:38Z", GoVersion:"go1.16.6b7", Compiler:"gc", Platform:"linux/amd64"}

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