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Re: [pcp] pmlogger_check stuck if host is down

To: Rares Vernica <rvernica@xxxxxxxxx>
Subject: Re: [pcp] pmlogger_check stuck if host is down
From: Nathan Scott <nathans@xxxxxxxxxx>
Date: Tue, 3 May 2016 19:14:44 -0400 (EDT)
Cc: pcp@xxxxxxxxxxx
Delivered-to: pcp@xxxxxxxxxxx
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References: <CALQ9KxCa75FNi0RY7rfSrQjJh=L33mPQWZpQpgGy2quPE+cimQ@xxxxxxxxxxxxxx> <639232678.44816362.1462256596580.JavaMail.zimbra@xxxxxxxxxx> <CALQ9KxBuMtd-D6x7Oxo_C0dx=mtoch5H1fDfr7bOo0TMhJgeew@xxxxxxxxxxxxxx>
Reply-to: Nathan Scott <nathans@xxxxxxxxxx>
Thread-index: sMxgdB8vbpCxIxyFUpf95dxTtb+iPg==
Thread-topic: pmlogger_check stuck if host is down

----- Original Message -----
> On Thu, Apr 28, 2016 at 8:03 PM, Nathan Scott <nathans@xxxxxxxxxx> wrote:
> > > [...]
> >
> > (any pmprobe processes running OOC?  that grep would have excluded 'em,
> but
> > I wonder if thats where the blockage is)
> 
> Yes, pmprobe is running as well:
> 
> > ps ax | grep pmp
> 
> 30792 ?        S      0:00 pmprobe -h b-02 -v apache.total_accesses

*nod* - thanks Rares, good to confirm that.

> I checked the config.remote file referenced in control and it does not
> contain any apache metrics:
> 
> > grep apache /var/lib/pcp/config/pmlogger/config.remote
> #+ apache/processes:x::
> #+ apache/summary:x::
> #+ apache/uptime:x::
> 
> Is pmprobe checking all the metrics, regardless of that it is in the
> config.remote file?
> 

The pmlogconf groups can have a "probe" line, which means those groups
of metrics will only be added to the pmlogger config if they're active
(in the case of apache, needs pmdaapache installed, else the probe will
"fail" & not activate those metric groups - as above).

cheers.

--
Nathan

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