Pod for etcd not synced (pod sandbox not found), retrying

I already have ufw and apparmor masked (have for years on this cluster) and I don't get any other relevant logs

check the kubelet.log for errors

@creamy-pencil-82913 I tried to manually launch the kubelet command spewed to the console..

don’t do that

looks like its failing due to cgroupv1

Did you read the release notes before upgrading? https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.35.md#deprecation > • ACTION REQUIRED: `failCgroupV1`will be set to true from 1.35. This means that nodes will not start on a cgroup v1 by default. This puts cgroup v1 into a deprecated state. (#134298,@kannon92) >

cool, I will work on getting the nodes updated

I would have appreciated a little (*) note for OS-es that default to cgroupv1 in the support matrix of k8s 1.35+. Like RHEL-clone version 8.x. That would have saved me some sweat yesterday. Yes I should have read the k8s release notes, but when you have such a nice compatibility list this warrants a warning IMO.