This repo contains a small python service using flask. The service is available in 4 stages.

1 - without any instrumentation

2 - with basic Elastic APM instrumentation

3 - with a more advanced Elastic APM instrumentation

4 - with custom spans

5 - with custom context

6 - with ECS logging

7 - calling second service, showing distributed tracing

8 - calling third service, showing distributed tracing

11 - instrumented with OTEL instead of Elastic APM

Redis is required for the services to run.

docker run -p 6379:6379 -d redis

A Python venv is recommended:

virtualenv -p python3 .venv
source .venv/bin/activate

Install dependencies:

pip install -r requirements.txt

Before running the services, make sure you provide the following endpoints and credentials:

.env: 

SECRET_TOKEN
SERVER_URL
OTEL_EXPORTER_OTLP_ENDPOINT
OTEL_EXPORTER_OTLP_HEADERS


filebeat.yml:
 
cloud.id: deploymentname:secret123
cloud.auth: elastic:secret123
or 
output.elasticsearch:
  hosts: ["localhost:9200"]
  username: "elastic"
  password: "changeme"

You can download Filebeat here: https://www.elastic.co/downloads/beats/filebeat

APM-Server, Elasticsearch and Kibana also need to be running. You can find more information about the Elastic Stack here

To run the python services, execute the following command for the file you'd like to run:

sh loadgen.sh