> For the complete documentation index, see [llms.txt](https://developer.harness.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.harness.io/open-source/use-harness-open-source/pipelines-1/samples/nats.md).

# Nats

This guide covers configuring continuous integration pipelines for projects that have a Nats dependency.

## Basic Example <a href="#basic-example" id="basic-example"></a>

In the below example we demonstrate a pipeline that launches Nats as a background step. The nats service will be available at `nats:4222`, where the hostname matches the background step name.

```yaml
kind: pipeline
spec:
  stages:
  - type: ci
    spec:
      steps:
      - name: nats
        type: background
        spec:
          container: nats:1.3.0
        
      - name: test
        type: run
        spec:
          container: ruby:2
          script: |-
            gem install nats
            nats-pub -s tcp://nats:4222 greeting 'hello'
            nats-pub -s tcp://nats:4222 greeting 'world' 
```