Experimental Physics and
Industrial Control System

Jack <[email protected]> · Tue, 25 Feb 2014 14:53:03 +0100

Hi Michel,
to tasks like that,

we are using Nagios, better, now we are using check-mk

(http://mathias-kettner.com/check_mk.html).

Hope this helps,
-Mauro

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Mauro Giacchini

Istituto Nazionale di Fisica Nucleare - Laboratori Nazionali di Legnaro
V.le dell'Universita', 2
35020 LEGNARO (PD) - ITALY
Tel./Fax. +39.049.8068558

EPICS _at_ LNL http://www.lnl.infn.it/~epics/

...the first EPICS installation to the project SPES realized from the
scratch in ITALY is in production since begin 2010!!

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

On 2/25/2014 1:22 PM, David Michel wrote:

Hi All,

I have a device with an IP (i.e. a computer on the network which then

talks to other devices, but we'd like to treat it as a black box) and

I'd like to be able to do a "pulse check" from an IOC running on

another machine to detect whether it's still running or not.

Just as a quick test, I wrote a quick C function that performs a

'ping' and hooked that up to an aSub record. That works fine but, as

you can imagine, it's obviously very slow and keeps the device busy

responding to ping calls all the time, so it's not very practical at

all.... there must be a better way!

Now, EPICS itself does this pulsecheck somehow as can be observed when

shutting down an IOC where others IOCs that depend on it will rather

quickly notify of this connection loss on the iocshell, or with OPIs

screens suddenly showing widgets as disconnected.

Wondering how this is done and how I can apply it to my case. Any

ideas most welcome.

Thanks
David

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System