otel.exporter.otlp.protocol is not exported as an environment variable

[taro-yanagiya]

Jenkins and plugins versions report

Environment

Jenkins: 2.466
OS: Linux - 6.5.0-41-generic
Java: 17.0.11 - Eclipse Adoptium (OpenJDK 64-Bit Server VM)
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ws-cleanup:0.47

What Operating System are you using (both controller, and any agents involved in the problem)?

Ubuntu 22.04
Docker image: jenkins/jenkins:latest

Reproduction steps

1. Enable this option: Export OpenTelemetry configuration as environment variables
2. Add a configuration property: otel.exporter.otlp.protocol=http/protobuf
3. Run a build with this pipeline script:

pipeline {
    agent any

    stages {
        stage('Hello') {
            steps {
                echo env.OTEL_EXPORTER_OTLP_PROTOCOL
            }
        }
    }
}

Expected Results

http/protobuf

Actual Results

null

Anything else?

No response

Are you interested in contributing a fix?

No response

[cyrille-leclerc]

WIP:

• Better OTel SDK config on Jenkins build agents #1010