DatasourceError

Incident Report for The Graph

Resolved

This incident has been resolved.
Posted Jan 17, 2026 - 21:28 UTC

Investigating

[FIRING:1] DatasourceError Production (partial_outage P2-High BSC Chapel: Block ingestor lagging behind true Tech Support)
https://thegraph.grafana.net/alerting/list

**Firing**

Value: A=-1, B=-1
Labels:
- alertname = DatasourceError
- cmp_BSC = partial_outage
- grafana_folder = Production
- priority = P2-High
- rulename = BSC Chapel: Block ingestor lagging behind
- statuspage = true
- team = Tech Support
Annotations:
- Error = failed to execute query [A]: [sse.dataQueryError] failed to execute query [A]: unexpected response with status code 521: error code: 521
- statuspage = BSC Chapel: Block ingestor lagging behind
Source: https://thegraph.grafana.net/alerting/grafana/M9Ml62G4z/view?orgId=1
Silence: https://thegraph.grafana.net/alerting/silence/new?alertmanager=grafana&matcher=__alert_rule_uid__%3DM9Ml62G4z&matcher=cmp_BSC%3Dpartial_outage&matcher=priority%3DP2-High&matcher=rulename%3DBSC+Chapel%3A+Block+ingestor+lagging+behind&matcher=statuspage%3Dtrue&matcher=team%3DTech+Support&orgId=1
Dashboard: https://thegraph.grafana.net/d/7rcuDImZk?from=1768680460000&orgId=1&to=1768684092966
Panel: https://thegraph.grafana.net/d/7rcuDImZk?from=1768680460000&orgId=1&to=1768684092966&viewPanel=87
Posted Jan 17, 2026 - 21:08 UTC
This incident affected: Upgrade Indexer - Indexing (BSC).