Opentelemetry about codelab-monitoring

[qclaogui]

Correct ! By default, the Alloy only expose 12345 :

codelab-monitoring/docker-compose/common/compose-include/alloy.yaml

Lines 27 to 28 in 121cac5

	ports:
	- "12345:12345"

More info: https://github.com/qclaogui/codelab-monitoring?tab=readme-ov-file#grafana-lgtmp-stack-default-port-mapping

[qclaogui]

By default, the OpenTelemetry Java agent uses OTLP exporter. Just to send data to Grafana Alloy at OTEL_EXPORTER_OTLP_ENDPOINT: "http://alloy:4318". See:

codelab-monitoring/alloy-modules/compose/traces/process-and-transform.alloy

Line 63 in 11531c3

endpoint = "0.0.0.0:4318"

Here is a similar example:

codelab-monitoring/examples/grafana-beyla/compose.yaml

Line 35 in 11531c3

OTEL_EXPORTER_OTLP_ENDPOINT: "http://alloy:4318"

[qclaogui]

Hi @prody1605, just found opentelemetry-java-examples https://github.com/open-telemetry/opentelemetry-java-examples/blob/d740b00e31e8f8520560273860b4cd651e5fb31c/javaagent/docker-compose.yml#L7

we can do some change in docker-compose.yml:

Try it

git clone https://github.com/open-telemetry/opentelemetry-java-examples && cd "$(basename "$_" .git)"

cd javaagent && ../gradlew bootJar

Replace docker-compose.yml with the following:

include:
- path: https://github.com/qclaogui/codelab-monitoring.git#main:docker-compose/monolithic-mode/traces/compose.yaml

services:
  app:
    build: ./
    environment:
      OTEL_SERVICE_NAME: "agent-example-app"
      OTEL_EXPORTER_OTLP_ENDPOINT: "http://alloy:4318"
    ports:
      - "8080:8080"

COMPOSE_EXPERIMENTAL_GIT_REMOTE=true docker compose up -d --remove-orphans

Once all containers are up and running you can search for traces in Grafana.

Navigate to http://localhost:3000

[prody1605]

Hi @qclaogui , Thanks for hints. And if i want to use opentelemetry-java-examples from other vm i need to expose port 4318:4138 on codelab-monitoring?