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Override jaeger configuration with env variables

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Michael 2021-06-18 18:10:05 +02:00 committed by GitHub
parent 9af0e705a5
commit 2ccdc419d0
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4 changed files with 14 additions and 5 deletions
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3
docs/content/observability/tracing/jaeger.md
View file

@ -20,6 +20,9 @@ tracing:
Traefik is able to send data over the compact thrift protocol to the [Jaeger agent](https://www.jaegertracing.io/docs/deployment/#agent)
or a [Jaeger collector](https://www.jaegertracing.io/docs/deployment/#collectors).
!!! info
All Jaeger configuration can be overridden by [environment variables](https://github.com/jaegertracing/jaeger-client-go#environment-variables)
#### `samplingServerURL`
_Required, Default="http://localhost:5778/sampling"_

2
go.mod
View file

@ -72,7 +72,7 @@ require (
github.com/traefik/gziphandler v1.1.2-0.20210212101304-175e0fad6888
github.com/traefik/paerser v0.1.2
github.com/traefik/yaegi v0.9.17
github.com/uber/jaeger-client-go v2.25.0+incompatible
github.com/uber/jaeger-client-go v2.29.1+incompatible
github.com/uber/jaeger-lib v2.2.0+incompatible
github.com/unrolled/render v1.0.2
github.com/unrolled/secure v1.0.7

4
go.sum
View file

@ -1018,8 +1018,8 @@ github.com/transip/gotransip/v6 v6.6.0/go.mod h1:pQZ36hWWRahCUXkFWlx9Hs711gLd8J4
github.com/tv42/httpunix v0.0.0-20150427012821-b75d8614f926/go.mod h1:9ESjWnEqriFuLhtthL60Sar/7RFoluCcXsuvEwTV5KM=
github.com/uber-go/atomic v1.3.2 h1:Azu9lPBWRNKzYXSIwRfgRuDuS0YKsK4NFhiQv98gkxo=
github.com/uber-go/atomic v1.3.2/go.mod h1:/Ct5t2lcmbJ4OSe/waGBoaVvVqtO0bmtfVNex1PFV8g=
github.com/uber/jaeger-client-go v2.25.0+incompatible h1:IxcNZ7WRY1Y3G4poYlx24szfsn/3LvK9QHCq9oQw8+U=
github.com/uber/jaeger-client-go v2.25.0+incompatible/go.mod h1:WVhlPFC8FDjOFMMWRy2pZqQJSXxYSwNYOkTr/Z6d3Kk=
github.com/uber/jaeger-client-go v2.29.1+incompatible h1:R9ec3zO3sGpzs0abd43Y+fBZRJ9uiH6lXyR/+u6brW4=
github.com/uber/jaeger-client-go v2.29.1+incompatible/go.mod h1:WVhlPFC8FDjOFMMWRy2pZqQJSXxYSwNYOkTr/Z6d3Kk=
github.com/uber/jaeger-lib v2.2.0+incompatible h1:MxZXOiR2JuoANZ3J6DE/U0kSFv/eJ/GfSYVCjK7dyaw=
github.com/uber/jaeger-lib v2.2.0+incompatible/go.mod h1:ComeNDZlWwrWnDv8aPp0Ba6+uUTzImX/AauajbLI56U=
github.com/ugorji/go v1.1.4/go.mod h1:uQMGLiO92mf5W77hV/PUCpI3pbzQx3CRekS0kk+RGrc=

10
pkg/tracing/jaeger/jaeger.go
View file

@ -68,7 +68,7 @@ func (c *Config) Setup(componentName string) (opentracing.Tracer, io.Closer, err
reporter.Password = c.Collector.Password
}
jcfg := jaegercfg.Configuration{
jcfg := &jaegercfg.Configuration{
Sampler: &jaegercfg.SamplerConfig{
SamplingServerURL: c.SamplingServerURL,
Type: c.SamplingType,
@ -80,6 +80,12 @@ func (c *Config) Setup(componentName string) (opentracing.Tracer, io.Closer, err
},
}
// Overrides existing tracer's Configuration with environment variables.
_, err := jcfg.FromEnv()
if err != nil {
return nil, nil, err
}
jMetricsFactory := jaegermet.NullFactory
opts := []jaegercfg.Option{
@ -106,7 +112,7 @@ func (c *Config) Setup(componentName string) (opentracing.Tracer, io.Closer, err
opts...,
)
if err != nil {
log.WithoutContext().Warnf("Could not initialize jaeger tracer: %s", err.Error())
log.WithoutContext().Warnf("Could not initialize jaeger tracer: %v", err)
return nil, nil, err
}
log.WithoutContext().Debug("Jaeger tracer configured")