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Re: [pcp] JSON PMDA

To: Ken McDonell <kenj@xxxxxxxxxxxxxxxx>
Subject: Re: [pcp] JSON PMDA
From: "Frank Ch. Eigler" <fche@xxxxxxxxxx>
Date: Thu, 16 Apr 2015 19:35:08 -0400
Cc: "'David Smith'" <dsmith@xxxxxxxxxx>, pcp@xxxxxxxxxxx
Delivered-to: pcp@xxxxxxxxxxx
In-reply-to: <005301d0789a$2ecae550$8c60aff0$@internode.on.net>
References: <448002717.7934024.1427683964254.JavaMail.zimbra@xxxxxxxxxx> <552699FE.7040801@xxxxxxxxxx> <2139482617.15593599.1428634701360.JavaMail.zimbra@xxxxxxxxxx> <552D6524.1030803@xxxxxxxxxx> <y0mfv80ubzj.fsf@xxxxxxxx> <552FD368.6030602@xxxxxxxxxx> <20150416152834.GB6822@xxxxxxxxxx> <003f01d07887$90ee5180$b2caf480$@internode.on.net> <20150416222728.GD6822@xxxxxxxxxx> <005301d0789a$2ecae550$8c60aff0$@internode.on.net>
User-agent: Mutt/1.4.2.2i
Hi, Ken -


> If a PMDA is installed/removed/restarted, this may (or may not)
> involve losing the connection to PMCD ... the reconnect code in pmie
> is triggered when the PMCD connection is lost ... so this won't help
> if the PMCD connection is maintained while the PMDA is
> reconfigured. [...]

(AIUI the status quo is that such a pmda restart involves a pmcd
restart, so then pmie, pmlogger, and the other pmcd-connecting tools
you listed would notice and stop or pmLookup* upon reconnect.)


- FChE

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