MIXED NAMESPACE

[Zenitugo]

Describe the bug:

I am trying to install cert-manager on my EKS cluster using the command below.

kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.14.4/cert-manager.yaml --namespace cert-manager

The Error Message:

the namespace from the provided object "kube-system" does not match the namespace "cert-manager". You must pass '--namespace=kube-system' to perform this operation.

Expected behaviour: I expected it to deploy successfully because I created a namespace called cert-manager but unfortunately that was not the case.

I downloaded the YAML file to my local computer and I can see the code to create a namespace called cert-manager but I noticed the namespace was not specified in all the play. But I didn't think it should matter when the command I am using has instructed kubectl to deploy in the cert-manager

The last two plays in the YAML files are named mutatingwebhookconfiguration.admissionregistration.k8s.io/cert-manager-webhook created and validatingwebhookconfiguration.admissionregistration.k8s.io/cert-manager-webhook created

I don't understand these error messages coming after they were successfully created

mutatingwebhookconfiguration.admissionregistration.k8s.io/cert-manager-webhook created
the namespace from the provided object "kube-system" does not match the namespace "cert-manager". You must pass '--namespace=kube-system' to perform this operation.
the namespace from the provided object "kube-system" does not match the namespace "cert-manager". You must pass '--namespace=kube-system' to perform this operation.
validatingwebhookconfiguration.admissionregistration.k8s.io/cert-manager-webhook created
the namespace from the provided object "kube-system" does not match the namespace "cert-manager". You must pass '--namespace=kube-system' to perform this operation.
the namespace from the provided object "kube-system" does not match the namespace "cert-manager". You must pass '--namespace=kube-system' to perform this operation.

Please I need help. What can I do to solve this?

[Zenitugo]

I Just found out it works without the namespace attached to the command. So simply run

kubectl apply -f https://github.com/cert-manager/cert-manager/releases/download/v1.14.4/cert-manager.yaml

[inteon]

Leader election uses kube-system by default, that is why you are seeing that error message.
This PR actually wants to change the default leader election namespace: #6766, which would fix the issue you were seeing.

[inteon]

Closing in favor of #6766