### Execute Healthcheck Script

Source: https://github.com/smartiniongithub/fastify-healthcheck/blob/master/README.md

Run the healthcheck script from another Node.js project. Specify the web application's healthcheck URL as an argument. If no URL is provided, it defaults to http://localhost:3000/health.

```bash
node node_modules/fastify-healthcheck/src/healthcheck http://localhost:8000/health
```

--------------------------------

### Register Fastify Healthcheck Plugin

Source: https://github.com/smartiniongithub/fastify-healthcheck/blob/master/README.md

Register the plugin with default options to expose a healthcheck route at '/health'. This is the simplest way to integrate health checks into your Fastify application.

```javascript
const fastify = require('fastify')()

// example without specifying options, returning a default healthcheck
// route mapped to '/health' that only reply to a GET request
fastify.register(require('fastify-healthcheck'))
// or
// example with custom healthcheck url and response to always fail
// fastify.register(require('fastify-healthcheck'), { healthcheckUrl: '/custom-health', healthcheckUrlAlwaysFail: true })
//

fastify.listen({ port: 3000, host: 'localhost' })
```

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