[nsd-users] nsd4 process weirdness?

[Tom Hendrikx]

Hi,

I was playing with the munin plugin in nsd4 beta4, and saw some strange
errors. Directly after starting nsd on linux, I'm seeing:

$ ps ax -o pid,ppid,user,args | grep nsd
 1638     1 nsd      /usr/sbin/nsd -c /etc/nsd/nsd.conf
 1641  1638 nsd      /usr/sbin/nsd -c /etc/nsd/nsd.conf
 1647  1641 nsd      /usr/sbin/nsd -c /etc/nsd/nsd.conf

$ sudo munin-run nsd_munin_memory
/etc/munin/plugins/nsd_munin_memory: line 377: test: : integer
expression expected
/etc/munin/plugins/nsd_munin_memory: line 383: test: expr: syntax error:
integer expression expected
/etc/munin/plugins/nsd_munin_memory: line 389: test: : integer
expression expected
/etc/munin/plugins/nsd_munin_memory: line 395: test: expr: syntax error:
integer expression expected
size_vsz 0
size_rss 0
size_db_mem.value 124776
size_xfrd_mem.value 12622376
size_config_mem.value 1928
size_db_disk.value 334848
size_config_disk.value 371

$ ps ax -o pid,ppid,user,args | grep nsd
 1638     1 nsd      /usr/sbin/nsd -c /etc/nsd/nsd.conf
 2912     1 nsd      /usr/sbin/nsd -c /etc/nsd/nsd.conf
 2913  2912 nsd      /usr/sbin/nsd -c /etc/nsd/nsd.conf

The munin errors are generated because the child process of pid 1638
(1641 in above output) went away, occurring while pulling vsz and rss
numbers from ps output. That might a c/p error from the unbound plugin
(unbound creates threads that all keep the same ppid).

But I'm mostly interested in nsd forking a new process (2912) detached
from the parent...

Kind regards,
	Tom