# Hub-agent removal **URL:** \ **Category:** Traefik v2\ **Tags:** kubernetes-ingress\ **Created:** [March 25, 2022, 8:20pm UTC](https://community.traefik.io/t/hub-agent-removal/13909 "2022-03-25T20:20:43Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![rp346](https://avatars.discourse-cdn.com/v4/letter/r/76d3ee/32.png) [@rp346](https://community.traefik.io/u/rp346)\ **Post date:** [March 25, 2022, 8:20pm UTC](https://community.traefik.io/t/hub-agent-removal/13909/1 "2022-03-25T20:20:43Z")
I had installed Trafik Hub beta on Kubenrets cluster for some time. recently I removed hub-agent by deleting the namespace. Now when I try to update anything for `IngressRoute` I get following error ```auto error: ingressroutes.traefik.containo.us "app-external" could not be patched: Internal error occurred: failed calling webhook "hub-agent.hub-agent.svc": Post "https://hub-agent-controller.hub-agent.svc:443/?timeout=10s": service "hub-agent-controller" not found You can run `kubectl replace -f /var/folders/4d/8x1jzt_d3qbdhrv3bdqh8xtw0000gp/T/kubectl-edit-665412160.yaml` to try this update again. ``` How can I remove all reference to `hub-agent` ? ---
**Author:** ![douglasdtm](https://sea2.discourse-cdn.com/flex020/user_avatar/community.traefik.io/douglasdtm/32/2002_2.png) [@douglasdtm](https://community.traefik.io/u/douglasdtm)\ **Post date:** [March 25, 2022, 9:03pm UTC](https://community.traefik.io/t/hub-agent-removal/13909/2 "2022-03-25T21:03:21Z")
Hello! Sometimes it can occur that a CRD might block a resource exclusion due to a failed webhook, leaving the resource orphaned on Kubernetes. Have you deleted the whole namespace where hub was deployed? If so you could try checking for those failed webhooks and then get rid of them forcefully like this: ```auto ## Find it kubectl get namespace test -o json |jq '.spec = {"finalizers":[]}' > temp.json ## Remove Manually curl -k -H "Content-Type: application/json" -X PUT --data-binary @temp.json :8001/api/v1/namespaces//finalize ``` I will also let the Hub team know about this issue! ---
**Author:** ![rp346](https://avatars.discourse-cdn.com/v4/letter/r/76d3ee/32.png) [@rp346](https://community.traefik.io/u/rp346)\ **Post date:** [March 28, 2022, 2:09pm UTC](https://community.traefik.io/t/hub-agent-removal/13909/3 "2022-03-28T14:09:17Z")
`hub-agent` was deployed into namespace `hub-agent` which I deleted completely. How can I fix this. This is blocking me from updating `ingressroutes` ---
**Author:** ![mloiseleur](https://sea2.discourse-cdn.com/flex020/user_avatar/community.traefik.io/mloiseleur/32/4987_2.png) [@mloiseleur](https://community.traefik.io/u/mloiseleur)\ **Post date:** [March 28, 2022, 2:41pm UTC](https://community.traefik.io/t/hub-agent-removal/13909/4 "2022-03-28T14:41:11Z")
Hub Agent comes with MutatingWebHook. MutatingWebHooks are not tied to a namespace. Manually, you'll need to delete the namespace AND this MutatingWebHook : `kubectl delete mutatingwebhookconfigurations hub` ---
**Author:** ![rp346](https://avatars.discourse-cdn.com/v4/letter/r/76d3ee/32.png) [@rp346](https://community.traefik.io/u/rp346)\ **Post date:** [March 29, 2022, 5:49pm UTC](https://community.traefik.io/t/hub-agent-removal/13909/5 "2022-03-29T17:49:36Z")
I deleted MutatingWebHook with `kubectl delete mutatingwebhookconfigurations hub` & namespace `hub-agent` ```auto % kubectl get ns hub-agent Error from server (NotFound): namespaces "hub-agent" not found ``` ```auto % kubectl get mutatingwebhookconfigurations hub Error from server (NotFound): mutatingwebhookconfigurations.admissionregistration.k8s.io "hub" not found ``` when I try to update `IngressRoute` I see following ```auto % kubectl -n marketing edit IngressRoute external-1 error: ingressroutes.traefik.containo.us "external-1" could not be patched: Internal error occurred: failed calling webhook "hub-agent.hub-agent.svc": Post "https://hub-agent-controller.hub-agent.svc:443/validation?timeout=10s": service "hub-agent-controller" not found You can run `kubectl replace -f /var/folders/4d/8x1jzt_d3qbdhrv3bdqh8xtw0000gp/T/kubectl-edit-2566697197.yaml` to try this update again. ``` What I am missing here ? ---
**Author:** ![mloiseleur](https://sea2.discourse-cdn.com/flex020/user_avatar/community.traefik.io/mloiseleur/32/4987_2.png) [@mloiseleur](https://community.traefik.io/u/mloiseleur)\ **Post date:** [March 30, 2022, 6:54am UTC](https://community.traefik.io/t/hub-agent-removal/13909/6 "2022-03-30T06:54:42Z")
It comes also with a validatingwebhook. So for a complete manual uninstall, you'll have to delete this webhook too ```auto kubectl delete validatingwebhookconfiguration hub ``` So, in summary, for a complete uninstall, one can use either helm : ```auto helm uninstall hub-agent -n hub-agent ``` Or manually : ```auto kubectl delete namespace hub-agent kubectl delete mutatingwebhookconfigurations hub kubectl delete validatingwebhookconfigurations hub ``` ---
**Author:** ![system](https://us1.discourse-cdn.com/flex020/uploads/containo/original/2X/b/bd81ebdb578656e76e56ff3cc3eed021d3ba132d.png) [@system](https://community.traefik.io/u/system)\ **Post date:** [April 2, 2022, 6:55am UTC](https://community.traefik.io/t/hub-agent-removal/13909/7 "2022-04-02T06:55:02Z")
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