[smokeping-users] master/slave error

[Peter Kristolaitis]

Are the slave RRD files getting updated?  Check the last-modified
timestamp.

Note that there seems to be a significant 'lag' when using slaves -- the
slave RRD files don't seem to get updated until the next cycle on the
master, so you have to run it for at least 2 cycles to see changes happen.



Seth Lyons wrote:
> Thanks for your response.  I set the permission accordingly, but I still
> have the same problem.  The .rrds and slave_cache files are being
> created, but the graphs are still blank.  I ran a debug on the slave and
> everything went fine...it ended with "Sent data to Server. Server said
> OK," and the pings showed the latency I was expecting.
>  
> If I dump one of the .rrd files to xml and view it in an editor, it is
> has a small amount of real data at the beginning, but it is mostly full
> of NaNs.
> 
>>>> Peter Kristolaitis <alter3d at alter3d.ca> 1/7/2009 2:25 PM >>>
> The directory that holds your RRD files must be readable/writeable by
> both the Smokeping process AND the webserver.
> 
> e.g.  If
>   - Your httpd runs as 'www'
>   - Smokeping runs as 'smokeping'
>   - In the Smokeping config, datadir  = /var/www/smokeping/rrd
> 
> Then,
> - Create a new group called 'smokeping'
> - Add both the 'www' and 'smokeping' users to that group
> - chgrp smokeping /var/www/smokeping/rrd
> - chmod -R 775 /var/www/smokeping/rrd
> 
> That should clear it up.
> 
> If that doesn't work, run one of your slaves with --debug and see if it
> spits back an error of any kind.
> 
> 
> 
> Seth Lyons wrote:
>> Greetings!
>> 
>> I am attempting to run a distributed smokeping setup in FreeBSD.  I
>> haven't been able to find in the docs information on what the
>> appropriate file permissions (and ownership) should be for the .rrd and
>> cache directories (/usr/local/var/smokeping).
>> 
>> The problem I'm having is that the graphs of my slaves are blank.  At
>> first I was unable to write cache files to the above directory (and
>> subdirectories), so I temporarily changed the perms to 777 just to see
>> if that would fix the problem.  Now the all of the files are being
>> written, but the graphs are still blank.
>> 
>> Please advise.
>> 
>> Thanks.
>> 
>> System info:
>> FreeBSD 7.0
>> smokeping-2.4.2
>> rrdtool-1.3.3
>>