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Simple Guide To Use The Runit Init System

Simple Guide To Use The Runit Init System
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#Linux

What's Runit System?

runit is a boot system for Unix-like systems such as Linux. Its main function is to start and manage the processes that are part of the operating system.:

Why some system's like Void linux use the runit?

  • Simplicity: Runit is known for its simplicity and minimalist desig- He focuses on doing the basics and doing them well.

  • Managed Processes: Runit is used to start, stop and restart processes on the syste- This includes services, daemons, and other background programs.

  • Dependencies: It can handle dependencies between services, which means you can configure it to start services in the correct order, taking into account the dependencies between them.

  • Easy Configuration: Runit configuration is generally done through simple directories and scripts, making it accessible even to less experienced system administrators.

  • Alternative to Systemd: Some systems prefer runit over systemd, especially those that value simplicity and transparency in initialization and service management.

How i can use that thing?

  • Before uploading a service it is necessary to enable it so that it can be activated at boot time and can be managed by the sv command, to enable a service with runit run:
$ ln -s /etc/runit/sv/<Name Of Your Service> /run/runit/service

Controlling the service

Note: When the service is enabled it starts automatically

sv start <Name Of Your Service>
  • To stop him:
sv stop <Name Of Your Service>
  • To check its status
sv status <Name Of Your Service>
  • To restart it
sv restart <Name Of Your Service>

Disabling service at boot

  • To disable access at boot simply create a file called *down* in the program folder in question, example:
 touch /etc/runit/sv/<Name Of Your Service>/down

Monitoring the system

  • View the status of all services
sv status /var/service/*

Seeing boot tree

First install the tree command from your package manager and then

tree /etc/runit/sv/servicedir

You will see output similar to:

 servicedir
 ├── run (755)
 ├── check (755)
 ├── conf (644)
 ├── finish (755)
 └── log (directory)
     ├── config (644)
     └── run (755)