Knowledgebase

Symptoms

CloudLinux Manager in WHM shows that the server needs to be rebooted after rebooting, and an error similar to the following can be found in the system log.

modprobe: ERROR: could not insert 'kmodlve': Cannot allocate memory

Description

The issue occurs due to the systemd.unified_cgroup_hierarchy value set to 1 at boot. The value should be 0.

Workaround

1. Access the server's command line as the 'root' user via SSH or "Terminal" in WHM.
2. Open the /etc/default/grub file in your preferred text editor.
3. On the GRUB_CMDLINE_LINUX line, change systemd.unified_cgroup_hierarchy=1 to systemd.unified_cgroup_hierarchy=0.
4. Save the changes and exit the text editor.
5. Rebuild the GRUB configuration.

   grub2-mkconfig -o /etc/grub2.cfg

   grub2-mkconfig -o /etc/grub2-efi.cfg

   grub2-mkconfig -o /boot/grub2/grub.cfg

   grub2-mkconfig -o /boot/efi/EFI/centos/grub.cfg

   grub2-mkconfig -o /boot/efi/EFI/almalinux/grub.cfg

6. Reboot the server.

Additional resources

LVE load fail: could not insert 'kmodlve': Cannot allocate memory