- WRITE YOUR FIRST SERVICE
- SEE ALSO
- COPYRIGHT AND LICENSE
Ubic::Manual::Intro - Initial introduction
Ubic is a polymorphic service manager.
It can run any program as a service and provides frontend script
ubic to manage services.
Polymorphic means that ubic can use various pluggable backends for managing services, for configuring services and even for describing a list of all services. Don't panic, it offers easy-to-use default solutions for the common tasks out-of-the-box too!
Ubic includes a centralized watchdog process which checks every service periodically and brings them back online if necessary.
Installing ubic is easy.
First, install the module using your favorite CPAN client:
Second, invoke ubic-admin script to perform initial configuration:
If you don't want to answer too many questions, you can invoke it with batch-mode option:
ubic-admin setup --batch-mode
Alternatively, if you're using Debian or Ubuntu, you can install ubic .deb package from the official launchpad PPA repository:
apt-add-repository ppa:berekuk/ubic apt-get update apt-get install ubic
WRITE YOUR FIRST SERVICE
Put this code in your service dir, i.e. in the file /etc/ubic/service/example (or if you opted for a home-dir installation, in the ~/ubic/service/example):
use Ubic::Service::SimpleDaemon; Ubic::Service::SimpleDaemon->new( bin => 'sleep 1000', );
$ ubic start example Starting example... started (pid 41209)
Check its status:
$ ubic status example running (pid 41209) ubic ubic.ping off ubic.update off ubic.watchdog running (pid 93226)
$ ubic status example example running (pid 41209)
Now let's see how the watchdog works by killing the process (replace the pid value with the pid you got from the status command above):
$ kill 41209 $ ubic status example example not running $ ubic-watchdog [Thu May 26 20:20:54 2011] example is broken, restarting
You don't have to run
ubic-watchdog manually; it will do its work in background in a minute.
Ubic::Service::SimpleDaemon allows you to tune other service aspects other than bin. Check it out.
Now go and read Ubic::Manual::Overview, it explains everything else that ubic has to offer.
Vyacheslav Matyukhin <email@example.com>
COPYRIGHT AND LICENSE
This software is copyright (c) 2015 by Yandex LLC.
This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.