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It is also possible to get a JSON response from the health check, for example via `curl`. You only have to pass a valid `Accept: application/json` header to your request.
As already mentioned, there is a JSON endpoint at https://aleksis.example.com/health/. You can use an json check plugin to check seperate health checks or just use a HTTP check to check if the site returns HTTP 200.
AlekSIS provides a Prometheus exporter.The exporter provides metrics about responses and requests, e.g.s about response codes, request latency and requests per view.It al provides data about database operations.
The metrics endpoint can be found at https://aleksis.example.com/metrics. In the default configuration it can be scraped from everywhere. You might want to add some webserver configuration to restrict access to this url.
If you are using the prometheus alertmanager, it is possible to create some alerting rules so that an alert is fired when your AlekSIS instance is slow or something.
Each logged in user has several options to provided through the AlekSIS core. Which of these items are display depends on whether the user has a person and what your system administrator has configured.
### Notifications {#sec:Notifications} The AlekSIS core has a built-in notification system which can be used by apps to send urgent information to specific persons (e. g. timetable changes). Notifications are shown on the dashboard and the notifications page reachable over the menu entry `Notifications`. In addition to that, notifications can be sent to users through several communication channels. These channels can be switched on or off in your personal preferences (cf. [@sec:PersonalPreferences]).
