[nsd-users] nsd4 process weirdness?

[Tom Hendrikx]

Hi Wouter,

I just tried with r3882, and that seems to work. I see you also fixed
the zones monitoring part which seemed broken too (but I did not have a
chance to look into that yet).

Thanks again,
	Tom

On 03/14/2013 12:33 PM, W.C.A. Wijngaards wrote:
> Hi Tom,
> 
> On 03/11/2013 01:07 AM, Tom Hendrikx wrote:
> 
>> 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:
> 
> The errors you see are caused by a shell script issue, compounded by
> the ps output that does not work with the nsd_munin_ script.
> 
> The process that forked and seems detached from the parent is normal
> after nsd reload processing.  But this caused the statistics problems.
> 
> In svn trunk I have updated nsd4 to have a new nsd-control command
> serverpid that prints out the pid of the process with the interesting
> RSS and VSZ.  That is used by the munin script (that I also updated)
> to output the correct values.
> 
> Very intermittently this may fail and print 0 memory usage, but for
> munin that should be good enough to get a graph about memory usage.
> 
> Would you like to try this updated version?
> 
> Best regards,
>    Wouter
> 
>> $ 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 _______________________________________________ 
>> nsd-users mailing list nsd-users at NLnetLabs.nl 
>> http://open.nlnetlabs.nl/mailman/listinfo/nsd-users
> 
> 
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