It's currently maxUnavailable: 1, but we want maxUnavailable: 10%, so we scale better on clusters with large node-counts. Checking a recent 4.8 CI release: curl -s https://gcsweb-ci.apps.ci.l2s4.p1.openshiftapps.com/gcs/origin-ci-test/logs/release-openshift-origin-installer-e2e-aws-ovn-4.8/1366506486007599104/artifacts/e2e-aws/daemonsets.json | jq -r '.items[] | select(.spec.template.spec.nodeSelector["node-role.kubernetes.io/master"] != "") | .metadata.namespace + " " + .metadata.name + " " + (.spec.template.spec.nodeSelector | tostring) + " " + (.spec.updateStrategy | tostring)' | rg ovnkube-node openshift-ovn-kubernetes ovnkube-node {"beta.kubernetes.io/os":"linux"} {"rollingUpdate":{"maxUnavailable":1},"type":"RollingUpdate"} Like bug 1933159, but different DaemonSet.
https://github.com/openshift/cluster-network-operator/pull/1000
verified this bug on 4.8.0-0.nightly-2021-03-08-053437
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 4.8.2 bug fix and security 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-2021:2438