Issue
I can see that a monitor is connected to many alerts in the UI after I save it. I've only connected it to one alert when creating it. Why are all these other alerts connected?
Applies To
Monitors
Alerts
All Sentry Users
Resolution
Sentry Alerts can be configured to trigger on issues from sources in one of two ways:
Alert on all issues in selected projects
Alert on specific monitors
If you select "Alert on all issues in select projects" then any monitor (Metric, Cron, Uptime, Mobile Build etc.) can potentially create or update an issue that triggers the Alert and is by default connected to all monitors in the project.
Note: The number of connected alerts does not take into account the filters on those alerts that might prevent them from picking up issues from the monitor (an example of a filter that might exclude metric issues is "Issue.category is not equal to 'metric'").
We show this information on a Monitor in the Connect Alerts table like so:
If you want to ensure that Alerts do not appear in this list you should instead connect them to specific monitors from a project using the "Alert on specific monitors" source.
For example:
An alert that should only triggered by issues created from errors in a project can be connected to the projects Error Monitor
An alert that that should only be triggered by issues created or updated from Uptime monitors can be connected to the project's Uptime Monitor.
Note: Performance Issues can only be alerted on via Project "monitor" when using "Alert on specific monitors" source or by alerting on all issues in selected projects.