Sorry for the late reply, I run Zabbix https://www.zabbix.com/ to monitor
all the stuff at my home as well as my day job. It is 100% open source and
easy to setup and run. Out of the box it will monitor everything you are
looking for.



On Mon, Nov 1, 2021 at 11:20 AM AZ Pete via PLUG-discuss <
plug-discuss@lists.phxlinux.org> wrote:

> Thanks to everyone that replied.
> Haven't decided which way to go yet, but thanks for all the good info!
> Just to clarify a bit, I'm not putting the Pis under any kind of heavy
> load. They will be running in environmentally "unfriendly" areas (garage,
> patio, etc), so I want to ensure that they are not overheating, especially
> in summer (I already have them in custom cooled cases).
>
> thanks!
> Peter
>
>
> On 10/30/2021 6:18 PM, Matt Graham via PLUG-discuss wrote:
>
> On 2021-10-29 17:57, AZ Pete via PLUG-discuss wrote:
>
> 3 Raspberry Pis, 1 Ubuntu, 1 Linux Mint, and am looking for a way that I
> can monitor them remotely.
>
>
> You probably don't need to do this unless they're under much heavier load
> than is usual for home machines.
>
> a unified dashboard that would list for each server:
> CPU utilization history, Drive space consumed, Temperature monitoring
> (CPU, chip set, & hard drive temps), Fan speed monitoring, Some kind
> of alerting mechanism when a given threshold is passed
>
>
> I've looked into Webmin, Glances, Nagios, Collectd & Cockpit. Mostly
> these seemed to be geared more toward remote admin. But the monitoring
> that was available didn't seem to include the temperature info or the
> idea of one unified dashboard.
>
>
> When I was doing this (a long time ago), it was not possible without 2
> separate programs.  We used Ganglia to keep records of CPU load, disk
> space, free RAM, number of database connections (if the machine was a MySQL
> server), and other stats.  Ganglia's default configuration had a web page
> that showed various statistics for all the machines that are set up and
> running the client Ganglia service.
>
> Ganglia does not notify people about things though.  To send mail to
> people or put a notice on a web page that said, "WARNING: machine foo-1234
> has more than 200 active database connections", we used Nagios. The Nagios
> server can monitor any parameter that is measurable from the Nagios
> clients, because Nagios monitors are (were?) Perl scripts that run on the
> clients.  Perl can easily parse the output from `sensors` or `df` or `free`
> and return "OK", "Warning", or "Error" as you wish.
>
> There used to be a rather useful firefox extension called nagios-checker
> that would poll a Nagios web page and display useful information in
> firefox's status bar.  However, they have improved firefox so much that the
> extension no longer works.
>
> If installing and configuring this stuff sounds like too much work for a
> tiny number of machines that are probably not under very heavy load, you're
> right.  It might be a useful learning experience, but its *practical* value
> is probably not very high.
>
>
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