Hi, On 27/05/2020 17:48, Anand Buddhdev via nsd-users wrote: > On 27/05/2020 16:37, Simon Deziel via nsd-users wrote: > > Hi Simon, > >> As you saw, you need to add "ReadWritePaths=/var/log/" to the systemd >> unit so that nsd can create the file. >> >> When you do so, on first startup, nsd changes UID from root -> nsd and >> then creates /var/log/nsd.log: >> >> root@d10-nsd:~# ls -l /var/log/nsd.log >> -rw-r--r-- 1 nsd nsd 151 May 27 14:15 /var/log/nsd.log >> >> On subsequent starts, nsd checks if it can append to the log while still >> running as root. I believe this is a bug as this check should happen > > Are you certain of this? I have never seen any errors on my NSD systems.
I tried to fix the contrib nsd.service by adding Simon's suggestion to it, if that is wrong let me know: https://github.com/NLnetLabs/nsd/commit/922d5a27f8b291b1157530cfde49707c134cf486 Also the unlink error message is fixed in the same manner as Unbound's printout; by silencing it to avoid chatter due to permission errors. It seems like NSD did manage to empty the file for MJ, but not unlink it. https://github.com/NLnetLabs/nsd/commit/bcc9b1107e1bc6a728f95c904db9603105a142ac Best regards, Wouter > >> after the switch from root->nsd. You can workaround it by using the big >> hammer that is CAP_DAC_OVERRIDE [*] or add this with `systemctl edit >> nsd`: >> >> [Service] >> ExecStartPre=-/bin/chown --quiet root:root /var/log/nsd.log > > All of this seems to be band-aid upon band-aid of unnecessary hacks. > >> As for the failed unlinking of the pidfile, this is harmless and should >> not be logged as a warning. It may already be fixed in newer releases as >> it was done with Unbound already. > > PID files are so passé! They are irrelevant on systems where daemons are > run under supervisors. I would highly recommend setting "pidfile" to "" > in nsd.conf. This prevents creation of a PID file. Systemd already knows > the PID of the NSD process, and can signal it directly. > > Regards, > Anand > _______________________________________________ > nsd-users mailing list > [email protected] > https://lists.nlnetlabs.nl/mailman/listinfo/nsd-users _______________________________________________ nsd-users mailing list [email protected] https://lists.nlnetlabs.nl/mailman/listinfo/nsd-users
