When trying to install Kommander to a new DKP cluster, you may encounter an error that resembles the following:
failed to ensure "Kommander Root CA is deployed": failed creating root CA resources: could not read dir manifests: could not read dir rootca: callback returned an error: failed to patch resource from manifests/rootca/1_self-signed-issuer.yaml: failed to patch resource selfsigned-issuer (cert-manager.io/v1, Kind=ClusterIssuer): no matches for kind "ClusterIssuer" in version "cert-manager.io/v1"
Solution
The most common cause of this error is that you are trying to install Kommander to a cluster that is not yet self-managed.
To resolve this, follow the appropriate instructions in our documentation for making your DKP cluster self-managed before installing Kommander, depending on your provider: