Matthew Jacobson c2efcdde09 Alerting: Fix flaky SQLITE_BUSY when migrating with provisioned dashboards (#76658) ... * Alerting: Move migration from background service run to ngalert init sqlite database write contention between the migration's single transaction and dashboard provisioning's frequent commits was causing the migration to fail with SQLITE_BUSY/SQLITE_BUSY_SNAPSHOT on all retries. This is not a new issue for sqlite+grafana, but the discrepancy between the length of the transactions was causing it to be very consistent. In addition, since a failed migration has implications on the assumed correctness of the alertmanager and alert rule definition state, we cause a server shutdown on error. This can make e2e tests as well as some high-load provisioned sqlite installations flaky on startup. The correct fix for this is better transaction management across various services and is out of scope for this change as we're primarily interested in mitigating the current bout of server failures in e2e tests when using sqlite.		2023-10-19 10:03:00 -04:00
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background_services.go	Alerting: Fix flaky SQLITE_BUSY when migrating with provisioned dashboards (#76658)	2023-10-19 10:03:00 -04:00