Verified with 4.2.0-0.nightly-2020-03-08-215456 and the issue has been fixed. $ oc -n openshift-ingress delete secret router-metrics-certs-default $ oc -n openshift-ingress logs router-default-7f9886d584-crgb6 I0309 06:45:36.222501 1 template.go:637] Reloaded metrics certificate for cert file "/etc/pki/tls/metrics-certs/tls.crt" and key file "/etc/pki/tls/metrics-certs/tls.key"
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, 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/RHBA-2020:0787