Sampling strategies are not applied to the image 'jaeger:all-in-one'

[nfsp3k]

Describe the bug
Sampling strategies are not applied to jaeger all-in-one.
Even though I set the default sampling rate to 0.05, the Jaeger samples every trace.

To Reproduce
Steps to reproduce the behavior:

1. Create a Kubernetes cluster and run an application in the cluster
2. Create jaeger:all-in-one pod with the sampling strategies argument in the cluster
3. Send traffic to the cluster and see if the sampling strategies are applied.

Expected behavior
The sampling rate I mentioned in the sampling strategies json file is applied to the jaeger in my cluster.

Screenshots
My jaeger .yaml file is as follows.

My JSON file is as follows.

The partial output of the command 'kubectl describe pod jaeger-xxx' is as follows:

The Jaeger pod works correctly as follows.

Version (please complete the following information):

• OS: Ubuntu 16.04
• Jaeger version: I don't know... How can I get that? I'm using the image whose URL is jaegertracing/all-in-one:latest.
• Deployment: Kubernetes

What troubleshooting steps did you try?
I even don't know what I can do about that.

[jpkrohling]

Sorry for the noise, I thought this was about the operator.

[nfsp3k]

Thanks for the comment, @jpkrohling.
I'm going to see the operator repository.

[yurishkuro]

Did you configure all-in-one to use remote sampler? By default it uses always-on sampler.

jaeger/cmd/all-in-one/main.go

Lines 252 to 261 in 6d315d7

	func initTracer(metricsFactory metrics.Factory, logger *zap.Logger) io.Closer {
	traceCfg := &jaegerClientConfig.Configuration{
	ServiceName: "jaeger-query",
	Sampler: &jaegerClientConfig.SamplerConfig{
	Type: "const",
	Param: 1.0,
	},
	RPCMetrics: true,
	}
	traceCfg, err := traceCfg.FromEnv()

You need to set JAEGER_SAMPLER_TYPE=remote and JAEGER_SAMPLER_PARAM={default probability} env vars.