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User impact: User can't use QAN
STR:
Start PMM 2.25.0 or 2.26.0
Enable testing repositories
Update via UI to 2.27.0
Open QAN
Actual result: See screenshot:
In qan-api2.log:
ERRO[2022-04-01T11:43:00.059+00:00] Failed to save 0 buckets in 3.696348ms: failed to prepare statement: driver: bad connection. component=data_ingestion INFO[2022-04-01T11:43:35.999+00:00] Starting RPC /qan.v1beta1.Collector/Collect ... request=f71ed293-b1b0-11ec-8377-0242ac110002 INFO[2022-04-01T11:43:35.999+00:00] Saving 2 MetricsBucket. request=f71ed293-b1b0-11ec-8377-0242ac110002 INFO[2022-04-01T11:43:35.999+00:00] RPC /qan.v1beta1.Collector/Collect done in 157.808µs. request=f71ed293-b1b0-11ec-8377-0242ac110002 ERRO[2022-04-01T11:43:36.015+00:00] Failed to save 0 buckets in 15.89895ms: failed to prepare statement: driver: bad connection. component=data_ingestion INFO[2022-04-01T11:44:00.092+00:00] Starting RPC /qan.v1beta1.Collector/Collect ... request=057b1029-b1b1-11ec-8377-0242ac110002 INFO[2022-04-01T11:44:00.092+00:00] Saving 13 MetricsBucket. request=057b1029-b1b1-11ec-8377-0242ac110002 INFO[2022-04-01T11:44:00.092+00:00] RPC /qan.v1beta1.Collector/Collect done in 117.567µs. request=057b1029-b1b1-11ec-8377-0242ac110002 ERRO[2022-04-01T11:44:00.094+00:00] Failed to save 0 buckets in 1.741963ms: failed to prepare statement: driver: bad connection. component=data_ingestion stdlog: Got SIGTERM, shutting down... INFO[2022-04-01T11:44:08.108+00:00] Server stopped. component=JSON INFO[2022-04-01T11:44:08.119+00:00] Server stopped. component=debug WARN[2022-04-01T11:44:08.120+00:00] Closing requests channel. component=data_ingestion WARN[2022-04-01T11:44:08.120+00:00] Requests channel closed, nothing to store. component=data_ingestion WARN[2022-04-01T11:44:08.120+00:00] Requests channel closed, nothing to store. component=data_ingestion INFO[2022-04-01T11:44:08.120+00:00] Done. component=main stdlog: qan-api2 v2.27.0. INFO[2022-04-01T11:44:11.263+00:00] Log level: info. stdlog: Connection: dial tcp 127.0.0.1:9000: connect: connection refused stdlog: qan-api2 v2.27.0. INFO[2022-04-01T11:44:12.781+00:00] Log level: info. stdlog: Connection: dial tcp 127.0.0.1:9000: connect: connection refused stdlog: qan-api2 v2.27.0.