Setting kernel command line
I’m trying to set memory limits on Docker containers running within my (Ubuntu) droplet. When I do this currently, I get the following warning:
WARNING: Your kernel does not support swap limit capabilities. Limitation discarded.
The fix for this is to set “cgroup_enable=memory swapaccount=1” in the command-line of the kernel (source).
/etc/default/grub to include these in my
GRUB_CMDLINE_LINUX and have run
update-grub; I can see the appropriate entries in the generated configuration in
/boot. However, when I reboot the machine:
$ cat /proc/cmdline root=LABEL=DOROOT ro
Is there anything I can do to set the command line parameters myself?