failed to populate resolver cache

[azzid]

I've installed the operator in OpenShift using OperatorHub

I've been able to create a standalone db - but I don't think it works properly - OpenShift reports CoreDNS is returning SERVFAIL for X% of requests. and when I look at the logs they are littered with:

[INFO] 10.130.0.28:32931 - 10162 "AAAA IN my-mongodb-standalone. udp 43 false 512" SERVFAIL qr,aa,rd,ra 43 0.000048726s
[INFO] 10.130.0.28:58916 - 30165 "A IN my-mongodb-standalone. udp 43 false 512" SERVFAIL qr,aa,rd,ra 43 0.00003007s

I started looking for a service with that name but found none:

$ oc get pods,statefulset,svc -n my-project 
NAME                                    READY   STATUS    RESTARTS       AGE
pod/my-mongodb-standalone-0         1/1     Running   0              153m
pod/mongodb-operator-655cd8cdf4-dhj7q   1/1     Running   1 (140m ago)   146m

NAME                                         READY   AGE
statefulset.apps/my-mongodb-standalone   1/1     4h9m

Digging a bit further I found the following - which seem related:

$ oc get sub -n my-project mongodb-operator -o jsonpath='{.items[*].status.conditions[1:3]}{\n}'
{"status":"False","type":"BundleUnpacking"} {"message":"failed to populate resolver cache from source redhat-operators/openshift-marketplace: error encountered while listing bundles: rpc error: code = DeadlineExceeded desc = context deadline exceeded","reason":"ErrorPreventedResolution","status":"True","type":"ResolutionFailed"}

Please help me understand what's wrong.