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Support #17271

Updated by Nico César about 3 years ago

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 

 <pre> 
 if [ -e /sys/fs/cgroup/cgroup.controllers ]  
 then  
   echo "cgroupsV2 enabled" 
 fi 
 </pre> 

 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" 

 <pre> 
 update-grub 
 </pre> 

 Fedora 31 

 <pre> 
 dnf install -y grubby 
 grubby --update-kernel=ALL --args=”systemd.unified_cgroup_hierarchy=0" 

 </pre>

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