http://bugzilla.suse.com/show_bug.cgi?id=1161289 Bug ID: 1161289 Summary: Multi-Master setup: upgrade from 1.16.x to 1.17.0 breaks cluster (update order) Classification: openSUSE Product: openSUSE Tumbleweed Version: Current Hardware: Other OS: Other Status: NEW Severity: Major Priority: P5 - None Component: Kubic Assignee: kubic-bugs@opensuse.org Reporter: kukuk@suse.com QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- I have a multi-master setup: 1x loadbalancer (haproxy) 3x master 3x worker With the update to kubelet 1.17.0 and still on the control-plane 1.16.3, the cluster broke, all machines with kubelet 1.17.0 couldn't join the cluster anymore. On the other side, an upgrade was only possible with kubeadm 1.17.0 So I had to: rollback whole cluster to kubelet 1.16.3 update to kubeadm 1.17.0 on all machines update control-plane and all nodes to 1.17.0 update kubelet to 1.17.0 So as described in the kubernetes upgrade documentation. Looks like we need to install the old and new kubelet in parallel until we migrated the cluster. -- You are receiving this mail because: You are the assignee for the bug.