See e.g. this run: https://prow.ci.openshift.org/view/gs/origin-ci-test/pr-logs/pull/openshift_installer/4206/pull-ci-openshift-installer-master-e2e-metal/1308812206216843264 A CI search shows this is failing fairly often: https://search.ci.openshift.org/?search=kubelet+terminates+kube-apiserver+gracefully&maxAge=48h&context=1&type=bug%2Bjunit&name=&maxMatches=5&maxBytes=20971520&groupBy=job
This test shows problems in our platform and/or in cloud providers not fulfilling the specification of their LBs. We know it is not perfect, but doesn't look like a blocker for 4.7. We keep working on this.
*** This bug has been marked as a duplicate of bug 1882750 ***