This bug was initially created as a copy of Bug #1883461 I am copying this bug because: k8s.io/klog moved to v2 in client-go and frieds. The operator does not use v2 yet and hence, we lose one half of the logging output (v2).
tested with 4.7.0-0.nightly-2020-11-05-010603, prometheus-operator version is 0.43.0, and klog versin is k8s.io/klog/v2 # oc -n openshift-monitoring logs prometheus-operator-797cf585dc-2fm5k -c prometheus-operator level=info ts=2020-11-05T02:26:17.558970691Z caller=main.go:228 msg="Starting Prometheus Operator" version="(version=0.43.0, branch=rhaos-4.7-rhel-8, revision=5ceb365)"
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (Moderate: OpenShift Container Platform 4.7.0 security, bug fix, and enhancement update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2020:5633