A node example app that sends OTEL traces and logs to New Relic using an OTEL collector.
This is a simple node app that generates a random number then displays the generated number. Logs are generated using winston logging library as well as using the fs File System library to manually write non json logs. The combination of these different log types are processed using OTEL and enriched with some metadata and then exported to New Relic.
The OTEL collector offers several options for receivng logs e.g reading from a file using Fluent, syslogs, etc. For this example we will be reading logs form a local file. We will write the logs locally on the host where the app will run, then we will mount the logs to an OTEL collector docker container.
Below is a basic architecture of this app.
Clone this repo
git clone https://github.com/Dkairu/node-otel-example.git
Go into the directory
cd node-otel-example
Install the dependencies
npm install
Start the OTEL collector and mount the configuration file plus the logs location. Please note a New Relic license key is required and should be saved on the host machine as an env variable NEW_RELIC_LICENSE_KEY
docker run -d -v $(pwd)/src/utils/otel-collector-config.yml:/etc/otelcol-contrib/config.yaml -v $(pwd)/src/logs/app.logs:/etc/otelcol-contrib/app-logs/app.logs -e NEW_RELIC_LICENSE_KEY=$NEW_RELIC_LICENSE_KEY -p 4318:4318 otel/opentelemetry-collector-contrib::0.55.0
Start the app
npm start
Open the app running on http://localhost:3500
View your logs in New Relic UI
