[collectd] collectd: rrdcached plugin: rrdc_update failed with status -1

[Zhou, Yuantai]

Got the rrdcached plugin to work without errors. Noticed that, with RRDCached plugin, the data is refreshed on collectd server once every 5 min. Is there a parameter that we can set to control how frequent the data could be refreshed?

We are to have write_mongodb plugin enabled to send data to Mongo DB, does the rrdcached plugin impact the data write to Mongo DB?

Thanks.
Yuantai

-----Original Message-----
From: collectd-bounces at verplant.org [mailto:collectd-bounces at verplant.org] On Behalf Of Zhou, Yuantai
Sent: Thursday, July 18, 2013 10:10 AM
To: Yves Mettier; collectd at verplant.org
Subject: Re: [collectd] collectd: rrdcached plugin: rrdc_update failed with status -1

Hi Yves,
Thanks for replying.

For collectd server, we are using version Version: 5.1.0-3ubuntu1. For collectd clients, we are using version Version 4.10.1-2.1ubuntu7. We see same error on both systems.

Tried only using RRDCached plug-in, same error happens. I tested the permissions with everyone has read\write permission to /var/lib/rrdcached/db/collectd, it still has the same error. We don't have a collectd or rrdcached account in /etc/passwd.

One question:  if we just use RRDTool plugin, do we get same rrd file caching as RRDCached plugin? If not, what are the differences?

Thanks.
Yuantai



-----Original Message-----
From: collectd-bounces at verplant.org [mailto:collectd-bounces at verplant.org] On Behalf Of Yves Mettier
Sent: Wednesday, July 17, 2013 11:28 PM
To: collectd at verplant.org
Subject: Re: [collectd] collectd: rrdcached plugin: rrdc_update failed with status -1

Hello,

Please provide the version number of the collectd you are using. 
Sometimes, it helps.

For what I can say now, I think that you should not use both rrdcached and rrdtool.
If you use rrdcached, do not forget to add "CreateFiles true".

Also check that collectd (and rrdcached if you are using it) has the permissions to go to /var/lib/rrdcached/db/collectd and then to write files there.

More info here :
  
  
  
  
  
  
  
  
  
llectd.org/documentation/manpages/collectd.conf.5.shtml#plugin_rrdcached
https://collectd.org/wiki/index.php/Plugin:RRDCacheD (this one should be
updated)


Regards,
Yves


Le 2013-07-17 23:55, Zhou, Yuantai a écrit :
> Hi All,
> We want to use the RRDCached plugin in our collectd environment but we 
> are seeing a lot of errors in syslog from collectd servers (and 
> collectd clients) like the following:
> 
> rrdcached plugin: rrdc_update
> (/var/lib/rrdcached/db/collectd/xxxxxxxxxxx/df/df-root.rrd,
> [1374097922:0.000000:0.010000:0.050000], 1) failed with status -1.
> 
> The error appears to happen for every rrd file
> 
> The RRDCached plugin configurations is as follows:
> 
> <Plugin rrdcached>
>         DaemonAddress "unix:/var/run/rrdcached.sock"
>         DataDir "/var/lib/rrdcached/db/collectd"
>         CollectStatistics true
> </Plugin>
> 
> <Plugin rrdtool>
>         DataDir "/var/lib/rrdcached/db/collectd"
>         CacheTimeout 60
>         CacheFlush 3600
>         WritesPerSecond 1800
>         RandomTimeout 30
> </Plugin>
> 
> We do see that the RRD files (at least some or most of them) are being 
> updated (with new timestamps).
> 
> Any way to resolve the error?
> 
> Thanks.
> Yuantai
> 
> 
> _______________________________________________
> collectd mailing list
> collectd at verplant.org
> http://mailman.verplant.org/listinfo/collectd

-- 
- Homepage       - http://ymettier.free.fr                             -
- GPG key        - http://ymettier.free.fr/gpg.txt                     -
- C en action    - http://ymettier.free.fr/livres/C_en_action_ed2.html -
- Guide Survie C - http://www.pearson.fr/livre/?GCOI=27440100673730    -

_______________________________________________
collectd mailing list
collectd at verplant.org
http://mailman.verplant.org/listinfo/collectd
_______________________________________________
collectd mailing list
collectd at verplant.org
http://mailman.verplant.org/listinfo/collectd