(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

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News

2014-08-01
(R)?ex 0.51.2 released. This release loads the CMDB and the INI group module by default and fixes some bugs. See the release page for more information.
2014-07-20
(R)?ex 0.50.0 released. This release is a bugfix release. See the release page for more information.
2014-07-13
(R)?ex 0.49.1 released. This release adds support for FreeBSD 10 and pkgng.
2014-07-02
For the website and build.rexify.org we are now using SSL certificates signed by CACert.org.
2014-05-31
Read the new howto to setup OpenLDAP and SSSD with Rex.
2014-04-03
Talk from Ferenc Erki at Free Software Conference of Szeged uploaded to slideshare

Conferences

2014-05-08 - 2014-05-10

Visit us at the LinuxTag in Berlin. There will be also a Rex hands-on workshop on Friday (2014-05-09).

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

Need Help?

Rex is a pure open source project, you can find community support in the following places:

Professional support is also available.

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"; };
};
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