Real World Docker for the Rubyist
summary
New Relic runs real services in Docker and documents what actually changed: a custom Centurion gem deploys images to many hosts with rolling restarts, logs go to stdout and into Elasticsearch/Kibana and Insights, and a 300MB Rails app hits 256MB default OOM kills until containers are given e g 2g memory. Images use onbuild base images to preinstall Ruby, supervisord and app‑server switches, tests mount local code into containers instead of rebuilding, a workflow that already runs hundreds of services.
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chapters (5)
- 0:00Start
- 9:03QUAY
- 16:07Let's take a closer look on the container
- 17:41How much memory does your app use?
- 28:38You've got a problem with nobody
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