[atlas] Probe operator notifications

For this purpose I use an online ping check service.
Your probe need to have IPv6 or public IPv4 and ICMP be not blocked by a firewall to be able to respond pings from outside.

To be exact, I use http://wedos.online that is run by one of the largest server-hosting company in the Czech Republic. It is free of charge. You can choose how often (1 minute or more) it will ping the probe and how many pings can be lost, then it sends both DOWN and UP notifications (email, Slack, Rocket chat)

Cheers
Jiri

______________________________________________________________
> Od: "Ponikierski, Grzegorz" <gponikie at akamai.com>
> Komu: "Edward Lewis" <edlewisjr at cox.net>, "ripe-atlas at ripe.net" <ripe-atlas at ripe.net>
> Datum: 11.12.2020 12:16
> Předmět: Re: [atlas] Probe operator notifications
>
>+1 for 'your probe came back on-line'
>
>Regards,
>Grzegorz
>
>From: Edward Lewis <edlewisjr at cox.net>
>Date: Thursday 2020-12-10 at 22:32
>To: "ripe-atlas at ripe.net" <ripe-atlas at ripe.net>
>Cc: Ed Lewis <edlewisjr at cox.net>
>Subject: [atlas] Probe operator notifications
>
>(Seeing the thread about DNS intercepted probes reminded me to send this:)
>
>For 5 or so years running I have a probe operating in my garage (behind my home’s NAT and using the ISP’s NXDOMAIN rewriting, non-DNSSEC handling recursive server) a run-of-the-mill home cable set up.
>
>When I got my November report, it said I’d been down the last half of November.  That was news to me.  I then down'd/up’d it and it reconnected and seems to be on-line again.
>
>I do get the “your probe went off-line” notices.  I would like “your probe came back on-line” notices as well.  If we had those, I may have noticed it stayed down after the last message I saw.
>
>Ed
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