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Flexible server monitoring

Introducing Simon 5!

Simon version 5 is now available. It is a massive update, introducing a much-requested feature: syncing the Simon data between multiple Macs, plus a Simon Status service, a Link Checker filter, improved Find filter, iMessage and Speak Error notifiers, a new app icon, and much more.

Important: please note that Simon 5 requires a minimum of macOS 10.12 (Sierra), and is a paid upgrade from Simon 4. Purchasers since September 1, 2020 automatically get a version 5 license (that also works in previous versions).

Read the Simon What's New page for details.

Dependencies

The feature I really need - unless I'm just missing it? - is a way to model dependencies. The biggest case is that I don't want to get alerts for web sites I monitor when my home internet connection has a problem. In nagios I make external services dependent on my router ping, dns server ping, and google.com check and I'd like to be able to do the same thing in Simon.

David Sinclair's picture

Re: Dependencies

Simon handles local internet outages automatically. Before each check, it checks that it can access one of two popular domains (apple.com and google.com, if I recall correctly), and if not, goes into an offline mode until the connection is restored.

You can disable this feature on a per-test basis via the checkbox to allow checking when offline (e.g. for local-only tests, or if you want to be alerted when your local internet is down).