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Support #17271
closeddocument that compute nodes need to use cgroupsv1 / cgroupsfs for Docker
Status:
Resolved
Priority:
Normal
Assigned To:
Category:
Documentation
Target version:
Due date:
Story points:
-
Release:
Release relationship:
Auto
Description
If you have the following versions
linux kernel > 4.x
systemd > 247 (en debian family)
docker > 20.10
Is very likely that you have cgroupsv2 enable by default. You can check by doing
if [ -e /sys/fs/cgroup/cgroup.controllers ] then echo "cgroupsV2 enabled" fi
Unfortunately Arvados 2.1 doesn't have support for cgrupsV2 so compute nodes need to have this disabled
this can be done by adding `systemd.unified_cgroup_hierarchy=0` to the kernel parameters.
Debian / Ubuntu:
in /etc/default/grub make sure that you have
GRUB_CMDLINE_LINUX="systemd.unified_cgroup_hierarchy=0"
update-grub
Fedora 31
dnf install -y grubby grubby --update-kernel=ALL --args=”systemd.unified_cgroup_hierarchy=0"
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