Prometheus rules TLS error

[Mohan Nagandlla]

Hi team 

I have deployed new Prometheus operator by using helm but the deployment was failed because of below error 

Error from server (InternalError): error when creating "t.yaml": Internal error occurred: failed calling webhook "prometheusrulemutate.monitoring.coreos.com": Post "https://pro-kube-prometheus-stack-operator.prom-op.svc:443/admission-prometheusrules/validate?timeout=10s": x509: certificate signed by unknown authority (possibly because of "x509: ECDSA verification failure" while trying to verify candidate authority certificate "nil1")
Error from server (InternalError): error when creating "t.yaml": Internal error occurred: failed calling webhook "prometheusrulemutate.monitoring.coreos.com": Post "https://pro-kube-prometheus-stack-operator.prom-op.svc:443/admission-prometheusrules/validate?timeout=10s": x509: certificate signed by unknown authority (possibly because of "x509: ECDSA verification failure" while trying to verify candidate authority certificate "nil1")

[Brian Candler]

Both Kubernetes and Prometheus Operator are separate projects, and not part of prometheus itself.  (Indeed, there are multiple projects called "prometheus operator" or similar).

You would probably be best off asking for help in the mailing list or discussion group for the project you are using.