How to change the priority of service in run levels on ubuntu?

Question

I have tried to change the priority of samba on run level 2 by renaming the S16samaba to S21samba.

mv S16samaba S21samaba

But when I reboot the server it starts before other services which are low priority like S12ntp.

I have also tried using update-rc.d command.

update-rc.d samba start 80 2 3 4 5

This command renamed S21samba back to S16samba. And it doesn't work.

I want to start the samba after all other services are started.

Please give me suggestion with the idea of priority of service in run levels.

Answer 1

The reason your approaches do not work it that they assume a system V init. Ubuntu does not use system V init. It either uses upstart or systemd depending on version. I do not believe either system uses run levels which is a tragic step back for such "advanced" systems.

Answer 2

This from Debian Wiki https://wiki.debian.org/LSBInitScripts/DependencyBasedBoot

To do this, in Debian you currently need to talk to the maintainer of packages with scripts Z and X, asking one of them (or both) to move their script into a different number. Dependency based boot sequencing make it possible for each package maintainer to specify the dependencies of its scripts, and leave the number allocation to the dependency resolver.

hildred's answer doesn't make sense to me if it means that runlevels have been superseded in more advanced initialization designs.