(R)?ex Deployment & Configuration Management

Automate Everything, Relax Anytime

  • > Integrates seamless in your running environment
  • > Easy to use and extend
  • > Easy to learn, it's just plain Perl
  • > Apache 2.0 licensed
task prepare => sub {
   install "apache2";
   service apache2 => ensure => "started";
};
Read the Getting Started Guide

Search

News

2014-04-12
(R)?ex 0.45.0 released. This release comes with OpenStack cloud support and lot of enhancements for common resources/functions. See the release notes including examples for the new features.
2014-04-03
Talk from Ferenc Erki at Free Software Conference of Szeged uploaded to slideshare
2014-02-02
(R)?ex 0.44.1 released. This release enhance Rex with cool new features and fixes a lot of bugs. See the release notes on Github.
2013-09-21
The talk of Kieler Linux Tage is uploaded to slideshare and on youtube (language: german).
2013-03-20

We are proud to announce that Rex was voted under the Best Open Source solutions 2013 by initiative mittelstand. And we want to thank inovex for the support to make this happen.

Conferences

2014-05-08 - 2014-05-10

Visit us at the LinuxTag in Berlin.

LinuxTag is Europe's leading exhibition and conference for Linux, Free Software and Open Source.

Need Help?

Rex is a pure Open Source project. So you can find community support in the following places.

Why use Rex?

If you have to do a task more than once, automate it!

Don‘t forget an installation step anymore. Automation reduces the risk of failure and let you do your real work.

Advantages

  • uses ssh, no agent required
  • seamless integration, no conflicts
  • easy to use and to extend
  • easy to learn, it‘s just plain perl

Open Source

We believe in the idea of open source. So Rex and all its parts are released under Apache 2.0 license.

You‘re invited to join the community to make Rex better and better.

Uptime?

This command line example will execute "uptime" on all the given hosts (frontend01, frontend02, ...).

$ rex -H "frontend[01..15] middleware[01..05] db[01..04]" -e "say run 'uptime'"

The same, but with a Rexfile

desc "Get Disk Free";
task "disk_free", sub {
   my $output = run "df -h";
   say $output;
};

Now you can run your Task with this command

$ rex -H "frontend[01..15] middleware[01..05] db[01..04]" disk_free

Keep Your Configuration In Sync

This example will install the Apache Webserver on 5 servers and keep the configuration in sync. If the configuration file was changed it will automatically reload apache.

If this task gets executed against a virgin host (where no apache is installed) it will first install it.

user "root";
group frontend => "frontend[01..05]";

desc "Prepare Frontend Server";
task "prepare", group => "frontend", sub {
  pkg "apache2",
    ensure => "latest";

  service "apache2",
    ensure => "started";
};

desc "Keep Configuration in sync";
task "configure", group => "frontend", sub {
  prepare();

  file "/etc/apache2/apache2.conf",
    source    => "files/etc/apache2/apache2.conf",
    on_change => sub { service apache2 => "reload"; };
};

Running under sudo?

You can also run everything with sudo. Just define the sudo password and activate sudo.

user "ubuntu";
group frontend => "frontend[01..05]";
sudo TRUE;

desc "Prepare Frontend Server";
task "prepare", group => "frontend", sub {
  pkg "apache2",
    ensure => "latest";

  service "apache2",
    ensure => "started";
};

desc "Keep Configuration in sync";
task "configure", group => "frontend", sub {
  prepare();

  file "/etc/apache2/apache2.conf",
    source    => "files/etc/apache2/apache2.conf",
    on_change => sub { service apache2 => "reload"; };
};
Fork me on GitHub
Google Group / Twitter / Github / Mailinglist / irc.freenode.net #rex   -.ô.-   Disclaimer