ingress-nginx opentracing

docs are few and far between

ingress-nginx opentracing

docs are few and far between

ingress-nginx

Don't ask me why I'm using the default ingress-nginx, I just have to. Anyway, I want to try out its integration with jaeger

config

minimal

Annoyingly I spent 4 hours only to realize the reason my ingress was crashing was because the docs show the latest master but I'm running the latest release, and the jaeger-endpoint config option was very recent.

data:
  enable-opentracing: "true"
  # agent host (udp/6831) adjust accordingly
  jaeger-collector-host: jaeger.jaeger.svc.cluster.local

  # takes precedence over collector-host
  # only available after 0.44.0
  # jaeger-endpoint: "http://jaeger.jaeger.svc.cluster.local:14268/api/traces"

other

For reasons, the default config is a bit useless: each request generates 2 spans: both with the name service name nginx and the operation name being the Ingress path, which for most people is just /.

Thankfully, they can be customized, especially useful are the available log fields

data:
  # rename the service
  jaeger-service-name: nginx-default

  # outer span
  opentracing-operation-name: "$request_method $host"
  # inner span
  opentracing-location-operation-name: "$namespace $service_name"

  # don't kill jaeger
  jaeger-sampler-type: ratelimiting
  jaeger-sampler-param: "5"