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Informations about the package nyx
Nyx
A lighweight PHP process manager.
Nyx is a worker process manager which aims to provide functionality to run multiple workers based on configuration. The idea of Nyx replaces the need to run multiple windows / screens / commands within the termnial when instantiating workers.
A better example of Nyx would be to use Supervisor.d which is heavily supported and maintained. Nyx is a lightweight alternative written in PHP.
Example
Let's assume the scripts below are long-running process workers that need to be run from the command line. Multiple termnials (or linux screens) would be created to achieve this.
Nyx tries to eliminate this by allowing you to confgure the amount of workers you want to run, thus running one command.
Getting started
Download the latest .phar from https://steadweb.github.io/nyx
Or install using composer
Configuration
Using nyx.phar requires you to provide the location of your nyx.json. The configuration files suggests where your workers are located, how many workers the manager should spawn and whether to log the outout / errors to file.
Example.
This sample configuration will create three pools, each with one worker assigned. The first two pools will continue to ping their respective IPs 8.8.8.8 and 8.8.4.4. We'll come back to the third pool later on.
Basic usage
Once you've created your nyx.json run the following command:
php nyx.phar run /path/to/nyx.json
And you should see the following output:
Notes
-
The current PID is the process ID of the nyx manager. At any given point you can track this using a process monitor, i.e.
top, if using a linux / unix system. -
Each pool that's suggested within your config will tell you each time it creates a new worker and a new process.
- The handler registered log allows us to catch
SIGTERMsignals.
To exit the manager, simply press CTRL + C and all sub processes will exit along with the manager.
Working example: foo.php
Our example configuration had three pools; two of those pools create one worker in each which would ping IPs. The third pool creates one worker which runs a PHP script, foo.php.
The example foo.php script is below. Take a look at the example, you'll notice the script ends after ~5 seconds.
Code
Nyx keeps track of each worker within the assigned pool and restarts the process if the worker has been signaled or has stopped, meaning Nyx will spawn an new worker for you.
As long as a worker process is deemed as running Nyx will not spawn a new worker until that process has been signaled or has stopped. Nyx will only ever spawn the amount of workes you have defined within config.
Testing
Checkout the repository from Github and run the following commands:
License
steadweb/nyx is licensed under MIT.
All versions of nyx with dependencies
hassankhan/config Version ^0.9.1
symfony/console Version ^2.6
squizlabs/php_codesniffer Version *