| <codeclass="text-nowrap">--rules.alert.for-outage-tolerance</code> | Max time to tolerate prometheus outage for restoring "for" state of alert. Use with server mode only. | `1h` |
| <codeclass="text-nowrap">--rules.alert.for-grace-period</code> | Minimum duration between alert and restored "for" state. This is maintained only for alerts with configured "for" time greater than grace period. Use with server mode only. | `10m` |
| <codeclass="text-nowrap">--rules.alert.resend-delay</code> | Minimum amount of time to wait before resending an alert to Alertmanager. Use with server mode only. | `1m` |
| <codeclass="text-nowrap">--rules.max-concurrent-evals</code> | Global concurrency limit for independent rules which can run concurrently. Use with server mode only. | `4` |
| <codeclass="text-nowrap">--rules.max-concurrent-evals</code> | Global concurrency limit for independent rules that can run concurrently. Use with server mode only. | `4` |
| <codeclass="text-nowrap">--alertmanager.notification-queue-capacity</code> | The capacity of the queue for pending Alertmanager notifications. Use with server mode only. | `10000` |
| <codeclass="text-nowrap">--query.lookback-delta</code> | The maximum lookback duration for retrieving metrics during expression evaluations and federation. Use with server mode only. | `5m` |
| <codeclass="text-nowrap">--query.timeout</code> | Maximum time a query may take before being aborted. Use with server mode only. | `2m` |