Question

Ingress Tutorial Cert Issuer Error

Following this tutorial for ingress and ssl setup. https://www.digitalocean.com/community/tutorials/how-to-set-up-an-nginx-ingress-on-digitalocean-kubernetes-using-helm

Everything going good, installed the cert manager but getting an error applying the cert issuer

kubectl apply -f production_issuer.yaml

Error from server (InternalError): error when creating “kube/issuer.yaml”: Internal error occurred: failed calling webhook “webhook.cert-manager.io”: failed to call webhook: Post “https://cert-manager-webhook.cert-manager.svc:443/mutate?timeout=10s”: x509: certificate signed by unknown authority


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Looks like the ca-injector failed to start.

E1106 23:15:28.823721 1 start.go:170] cert-manager/ca-injector “msg”=“Error registering certificate based controllers. Retrying after 5 seconds.” “error”=“no matches for kind "MutatingWebhookConfiguration" in version "admissionregistration.k8s.io/v1beta1"”
Error: error registering secret controller: no matches for kind “MutatingWebhookConfiguration” in version “admissionregistration.k8s.io/v1beta1

That api does not exist

kc api-versions | grep admission
admissionregistration.k8s.io/v1

I took the --version off the cert-manager options. Assuming this installs the latest version of the chart. After that the issuer was able to be applied. Think that step in the tutorial needs to be updated.

helm install cert-manager jetstack/cert-manager --namespace cert-manager --set installCRDs=true