bosh-log-tracer

README

bosh-log-tracer

To visualize what BOSH is busy doing during a task.

It's taking an after-the-fact approach at profiling by reading logs and pretending it knows what BOSH was thinking while it happened. You probably shouldn't fully trust the accuracy of the results.

Quick Start

Run Jaeger (the tooling and UI) locally according to their Getting started guide...

docker run -d --name jaeger \
  -e COLLECTOR_ZIPKIN_HTTP_PORT=9411 \
  -p 5775:5775/udp \
  -p 6831:6831/udp \
  -p 6832:6832/udp \
  -p 5778:5778 \
  -p 16686:16686 \
  -p 14268:14268 \
  -p 9411:9411 \
  jaegertracing/all-in-one:1.12

Provide the debug log of a deploy task via STDIN...

bosh task --debug 1234 | go run github.com/dpb587/bosh-log-tracer/cmd/taskdebugjaeger

Open the URL it prints (something like http://localhost:16686/trace/1cfa67194cc4d8ef).

Caveats

alpha/experiment/buggy/use-at-your-own-risk; also:

• alpha (pre-alpha?)
• experiment / proof of concept; worth pursuing more? get in touch
• currently only works with deploy tasks
• not tested with failed tasks
• not tested across diverse environments
• don't expect the code to easily make sense right now
• relevant log lines are included in traces and may include sensitive data

Screenshot

License

Apache License, Version 2.0