This is spamming the logs of all tools-worker-* nodes:
Dec 12 06:35:08 tools-worker-1015 prometheus-node-exporter[654]: time="2018-12-12T06:35:08Z" level=error msg="Error on statfs() system call for "/run/docker/netns/47128f4653d2": permission denied" source="filesystem_linux.go:57" Dec 12 06:35:08 tools-worker-1015 prometheus-node-exporter[654]: time="2018-12-12T06:35:08Z" level=error msg="Error on statfs() system call for "/var/lib/docker/devicemapper/mnt/7f729ce826fa165cd4ee4e55125680e54ee6630f8413c2d78d6f05c28852b16f": permission denied" source="filesystem_linux.go:57"
Similar to what is described in T184469 but maybe with different paths / fstypes:
- /var/lib/docker/devicemapper/mnt
- /var/lib/docker/containers
- /run/docker/netns
- /var/lib/kubelet/pods/