Re: Distributed System Monitoring

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On Thursday, June 7, 2018 8:31:35 AM CDT Chris Olson wrote:
> We have recently been assigned to help with the development
> of a system that will power non-computer/non-network devices
> located at various places within a 10,000 square ft facility.
> Most of these devices will operate on a fairly wide range of
> DC input power.
> 
> The availability of surplus Cat-5 cable and the availability
> of low cost POE switches has been suggested as a method of
> powering these devices.  There also appears to be some good,
> low cost installation options for all of the required system
> elements.
> 
> The activity and health of the devices is directly related
> to their power consumption. Is there a standard CentOS feature
> or commonly used App that would facilitate monitoring the power
> being supplied by each of the individual POE switch outputs?  
> 
> Thanks in advance for any information shared.

Hi Chris -

Most PoE network switches can report the current consumed by each port.  To 
get this you have to either use the CLI of the switch or SNMP.

I suggest exploring Nagios.  It is available for CentOS from standard 
repositories.  It takes a bit of effort to set up, but it can monitor dang 
near anything that SNMP can report.  The secret is to find MIBs for the 
switches you are using, then finding the MIB entries.

-- 
Bill Gee



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