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Disconnects from cloud

See original GitHub issue

Since cloud went to Zeebe 0.21.1, this happens every day:

{"context":"/server/endpoint/node_modules/@magikcraft/nestjs-zeebe/node_modules/zeebe-node/dist/zb/ZBWorker.js:122","id":"retrieve-spells_103","level":50,"message":"Stalled on gRPC error","pollMode":"Long Poll","taskType":"retrieve-spells","time":"2019 Oct-28 01:48:50AM","timestamp":"2019-10-28T01:48:50.672Z"}
{"context":"/server/endpoint/node_modules/@magikcraft/nestjs-zeebe/node_modules/zeebe-node/dist/lib/GRPCClient.js:71","id":"gRPC Channel","level":50,"message":"GRPC ERROR: 1 CANCELLED: Received http2 header with status: 502","pollMode":"Long Poll","taskType":"gRPC Channel","time":"2019 Oct-28 01:48:50AM","timestamp":"2019-10-28T01:48:50.672Z"}
{"context":"/server/endpoint/node_modules/@magikcraft/nestjs-zeebe/node_modules/zeebe-node/dist/lib/GRPCClient.js:242","id":"gRPC Channel","level":50,"message":"GRPC Channel State: READY","pollMode":"Long Poll","taskType":"gRPC Channel","time":"2019 Oct-28 01:48:50AM","timestamp":"2019-10-28T01:48:50.673Z"}
{"context":"/server/endpoint/node_modules/@magikcraft/nestjs-zeebe/node_modules/zeebe-node/dist/lib/GRPCClient.js:77","id":"gRPC Channel","level":30,"message":"gRPC Channel reconnected","pollMode":"Long Poll","taskType":"gRPC Channel","time":"2019 Oct-28 01:48:50AM","timestamp":"2019-10-28T01:48:50.673Z"}
{"context":"/server/endpoint/node_modules/@magikcraft/nestjs-zeebe/node_modules/zeebe-node/dist/lib/GRPCClient.js:258","id":"gRPC Channel","level":30,"message":"gRPC Channel State: READY","pollMode":"Long Poll","taskType":"gRPC Channel","time":"2019 Oct-28 01:48:50AM","timestamp":"2019-10-28T01:48:50.855Z"}
{"context":"/server/endpoint/node_modules/@magikcraft/nestjs-zeebe/node_modules/zeebe-node/dist/lib/GRPCClient.js:259","id":"gRPC Channel","level":30,"message":"gRPC Retry count: 2","pollMode":"Long Poll","taskType":"gRPC Channel","time":"2019 Oct-28 01:48:50AM","timestamp":"2019-10-28T01:48:50.855Z"}
{"context":"/server/endpoint/node_modules/@magikcraft/nestjs-zeebe/node_modules/zeebe-node/dist/lib/GRPCClient.js:262","id":"gRPC Channel","level":30,"message":"gRPC reconnected","pollMode":"Long Poll","taskType":"gRPC Channel","time":"2019 Oct-28 01:48:50AM","timestamp":"2019-10-28T01:48:50.855Z"}
{"context":"/server/endpoint/node_modules/@magikcraft/nestjs-zeebe/node_modules/zeebe-node/dist/lib/GRPCClient.js:77","id":"gRPC Channel","level":30,"message":"gRPC Channel reconnected","pollMode":"Long Poll","taskType":"gRPC Channel","time":"2019 Oct-28 01:48:50AM","timestamp":"2019-10-28T01:48:50.856Z"}

The client reports it is connected, but does not retrieve any jobs.

Could this be due to pod rescheduling?

Issue Analytics

State:
Created 4 years ago
Comments:12 (8 by maintainers)

Top GitHub Comments

1reaction

afirthcommented, Jan 23, 2020

Looked into this today with @colrad. We believe nginx receives the keepalive but doesn’t pass it to the backend. Because the nginx <-> backend connection has no data on it, it’s killed after 60s by the grpc_read_timeout. We’ve increased that timeout to 601s (1s > than the default long-poll of 10 mins) in https://github.com/camunda-cloud/zeebe-controller-k8s/pull/185 - this should go live this week

0reactions

afirthcommented, May 6, 2020

@jwulf thanks for the fix! what was the root cause?