Ok, so that means that you don’t have a name=systemd cgroup mount on the host, this then breaks systemd in containers as the kernel won’t allow the mount.
That’s odd because CentOS 7 uses systemd I thought, so you’d expect the host to have properly setup systemd cgroups.
Can you show grep cgroup /proc/self/mountinfo on the host?
Think we can close this off as I i’m running this particular instance on severely locked down CentOS VM, they probably pushed something out with Puppet. Not a rabbit hole worth diving down.
Thanks for your help!
Cheers,
Jon.