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NGINX Unit is a lightweight and versatile open-source server that has two primary capabilities:
Unit compresses several layers of the modern application stack into a potent, coherent solution with a focus on performance, low latency, and scalability. It is intended as a universal building block for any web architecture regardless of its complexity, from enterprise-scale deployments to your pet's homepage.
Its native RESTful JSON API enables dynamic updates with zero interruptions and flexible configuration, while its out-of-the-box productivity reliably scales to production-grade workloads. We achieve that with a complex, asynchronous, multithreading architecture comprising multiple processes to ensure security and robustness while getting the most out of today's computing platforms.
$ brew install nginx/unit/unit
For details and available language packages, see the docs.
$ docker pull unit:<TAG>
$ mkdir /tmp/unit-control # customize as needed.
$ docker run -d \
--mount type=bind,src=/tmp/unit-control,dst=/var/run \
--mount type=bind,src=.,dst=/www \
--network host \
unit
For a description of image tags, see the docs.
WARNING: latest image tag may not provide support for specific language modules, do check the available image tags from the link above before pulling your image.
Your current working directory will now be mounted to the Unit image at /www.
You can reach its socket at /tmp/unit-control/control.unit.sock assuming no
further customizations have been made.
$ wget https://raw.githubusercontent.com/nginx/unit/master/tools/setup-unit && chmod +x setup-unit
# ./setup-unit repo-config && yum install unit
# ./setup-unit welcome
For details and available language packages, see the docs.
$ wget https://raw.githubusercontent.com/nginx/unit/master/tools/setup-unit && chmod +x setup-unit
# ./setup-unit repo-config && apt install unit
# ./setup-unit welcome
For details and available language packages, see the docs.
NGINX Unit provides a RESTful API for dynamic configuration. See the control API documentation for more information on what endpoints are available and how to use them.
For full details of configuration management, see the docs.
Unit runs apps in a variety of languages. Let's consider a basic example, choosing PHP for no particular reason.
Suppose you saved a PHP script as /www/helloworld/index.php:
<?php echo "Hello, PHP on Unit!"; ?>
To run it on Unit with the unit-php module installed, first set up an
application object. Let's store our first config snippet in a file called
config.json:
{
"helloworld": {
"type": "php",
"root": "/www/helloworld/"
}
}
Saving it as a file isn't necessary, but can come in handy with larger objects.
Now, PUT it into the /config/applications section of Unit's control API,
usually available by default via a Unix domain socket:
# curl -X PUT --data-binary @config.json --unix-socket \
/path/to/control.unit.sock http://localhost/config/applications
{
"success": "Reconfiguration done."
}
Next, reference the app from a listener object in the /config/listeners
section of the API. This time, we pass the config snippet straight from the
command line:
# curl -X PUT -d '{"127.0.0.1:8080": {"pass": "applications/helloworld"}}' \
--unix-socket /path/to/control.unit.sock http://localhost/config/listeners
{
"success": "Reconfiguration done."
}
Now Unit accepts requests at the specified IP and port, passing them to the application process. Your app works!
$ curl 127.0.0.1:8080
Hello, PHP on Unit!
Finally, query the entire /config section of the control API:
# curl --unix-socket /path/to/control.unit.sock http://localhost/config/
Unit's output should contain both snippets, neatly organized:
{
"listeners": {
"127.0.0.1:8080": {
"pass": "applications/helloworld"
}
},
"applications": {
"helloworld": {
"type": "php",
"root": "/www/helloworld/"
}
}
}
Unit supports running WebAssembly Components (WASI 0.2). For more information see the Unit Configuration Docs.
Our OpenAPI specification aims to simplify configuring and integrating NGINX Unit deployments and provide an authoritative source of knowledge about the control API.
Although the specification is still in the early beta stage, it is a promising step forward for the NGINX Unit community. While working on it, we kindly ask you to experiment and provide feedback to help improve its functionality and usability.
The go-to place to start asking questions and share your thoughts is GitHub Discussions.
Our GitHub issues page offers space for a more technical discussion at your own pace.
The project map on GitHub sheds some light on our current work and plans for the future.
Our official website may provide answers not easily found otherwise.
Get involved with the project by contributing! See the contributing guide for details.
To reach the team directly, subscribe to the mailing list.
For security issues, email us, mentioning NGINX Unit in the subject and following the CVSS v3.1 spec.
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