All,

Sorry to bump this, but does anyone have any ideas on a solution for this ? 

Regards,

Wayne Pascoe
RBS Global Banking & Markets
Office: +44 20 3361 9571   |  Mobile: +44 7799 707450 
 

> -----Original Message-----
> From: PASCOE, Wayne, GBM 
> Sent: 26 June 2009 11:24
> To: [email protected]
> Subject: Re: [Ganglia-general] No rrd file being created for metrics
 
Thanks for your reply - hopefully this will clarify the 
missing bits of information.
 
> > -----Original Message-----
> >
> > Your email is missing some relevant information.  gmond 
> doesn't store 
> > metrics into RRD files, it only makes the metric 
> information available 
> > via XML.  gmetad is the process that gets these metrics (from gmond
> > nodes) and stores them on RRD files on disk.  You seem to 
> be debugging 
> > under the assumption that your problem is that the collector gmond 
> > isn't getting the metrics from the other gmond, but you 
> haven't given 
> > us information to indicate that you've verified that.
 
To clarify, I will call our regular collecter 'BoxA' and the 
host with the disk metrics 'WinBox'. BoxA is a Linux host 
running Ganglia 3.0.7 and WinBox is a windows host running 
Ganglia 3.0.7
 
When I setup WinBox as my cluster collector node in gmetad, 
all of the metrics that I expect to be present are there and 
RRD files are created for them. 

They are only missing if I configure WinBox to send to BoxA 
and setup BoxA as my collecter in gmetad.conf
 
Working config:
 
WinBox gmond.conf
udp_send_channel {
  host = WinBox
  port = 8649
} 
 
gmetad.conf
data_source "My Cluster" WinBox.mydomain.com


Failing config:

WinBox gmond.conf
udp_send_channel {
  host = BoxA
  port = 8649
}
 
BoxA gmond.conf
udp_send_channel {
  host = BoxA
  port = 8649
}
 
gmetad.conf
data_source "My Cluster" BoxA.mydomain.com
 
  
> > So:
> >  - Can you look at the XML from your collector node (tcp port 8649)
> >    and check if it's actually missing the metrics?

The metrics are there, and appear in gmetad when using WinBox 
as my collector. When WinBox is configured to send to itself 
(see working configuration above), telnetting to 8469 on the 
server shows those metrics are present. 

When I set BoxA to be the collecter and configure WinBox to 
send to that, the metrics are NOT present when I telnet to BoxA 8649. 
 
> >  - Is your gmetad polling the correct collector nodes?

Yes, it is - in both scenarios, WinBox appears appears in the 
collection in Gmetad

At this point, it looks as if the data is missing when it is 
sent to BoxA, the Linux collector. At this point, I cannot 
see the metrics in the XML output any more, so it makes sense 
that it never arrives at the gmetad host. 
 
On this basis, where do I go to investigate this further ? 
 
On BoxA, sbin/gmond -m does not include any of the metrics 
that I am collecting on my Windows box and wish to appear in 
my cluster - is this relevant ? Do these metrics have to be 
supported by this gmond to be collected? If so, how can I 
configure them, given that my earlier attempt to include them 
caused gmond to fail with the following message:
 
Unable to collect metric 'phys_disk_time' on this platform. Exiting.
 
Thanks in advance for any assistance that anyone can give :) 
> 
> --
> Wayne Pascoe
> RBS Global Banking & Markets
> Office: +44 20 3361 9571   |  Mobile: +44 7799 707450 

> _______________________________________________
> Ganglia-general mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/ganglia-general
> 

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