Bug Report

Last week, we have updated Concourse to v3.9.1. After update, we recognized that sometimes tasks never start although the concourse workers are available. In this case, we cancel the build and restart it.

In our environment, we have 17 linux agents and 2 windows agents. And 220 pipelines are active on Concourse. 99% of these pipelines run on linux workers.

Prometheus metrics for concourse

• Concourse version: 3.9.1
• Deployment type (BOSH/Docker/binary): BOSH
• Infrastructure/IaaS: Ubuntu/VMWare

PS: All screenshots were collected in a problematic time.