(R)?ex the friendly automation framework



The Rex-1.13.3 release is now available on CPAN. It contains documentation updates, and a fix for debconf parsing. Behind the scenes, CI was migrated over to GitHub Actions as well.


The Rex-1.13.2 release is now available on CPAN. It contains only documentation updates, mostly for the built-in template capabilities, but also fixes a few typos.


Happy 10th birthday, Rex!

The Rex-1.13.1 release is now available on CPAN. It is focusing on CMDB bugfixes and documentation, while also fixing a missing feature flag. Upgrade is recommended for all users.


The Rex-1.13.0 release is now available on CPAN. It adds on_no_change hooks for file management commands to trigger further actions when files are left unchanged. Upgrade is recommended for all users.


The Rex-1.12.2 release is now available on CPAN. It fixes various regressions, as well as bugs around file management. Upgrade is highly recommended for all users.


Learning automation using Rex

Ferenc Erki (FErki) will be the guest of Gábor Szabó on the next Code Maven live stream to learn about automation using Rex. Register for the free event via Code Maven or Meetup, and join the discussion!

Unexpected use cases with Rex

Unexpected use cases with Rex at the 22nd German Perl/Raku Workshop 2020 in Erlangen by Ferenc Erki (FErki).

Rex & Friends

Rex & Friends talk at the Barcelona Perl & Friends 2019 by Ferenc Erki (FErki).

» Home » Docs » Release notes » Release notes for 0.12

Release notes for 0.12


task "dosomething", sub { say sudo "id"; };

user "root"; public_key "/path/to/your/ec2-public.key"; private_key "/path/to/your/ec2-private.key.pem";

# set the cloud service provider to "Amazon" cloud_service "Amazon";

# set cloud auth cloud_auth "$access_key", "$secret_access_key";

# set cloud region cloud_region "ec2.eu-west-1.amazonaws.com";

# define a group with all running ec2 instances group ec2 => get_cloud_instances_as_group();

task "list", sub { print Dumper cloud_instances_list; print Dumper cloud_volume_list;

<span class="hljs-function">print</span> Dumper get_cloud_regions;
<span class="hljs-function">print</span> Dumper get_cloud_availability_zones;


task "create", sub {

<span class="hljs-comment"># if you want an ebs volume, create it. if not, you don't need this.</span><span class="hljs-comment">

my $vol_id = cloud_volume create => { size => 1, zone => "eu-west-1a"; };

<span class="hljs-comment"># create the cloud instances and attach the just created ebs volume.</span><span class="hljs-comment">

cloud_instance create => { image_id => "ami-02103876", name => "test-ec2", key => "my-test-key", volume => $vol_id, # if you don't have a volume, skip this zone => "eu-west-1a", # the volume and the instance must be in the same zone. skip this if you don't have a volume. }; };

task "destroy", sub { cloud_volume detach => "vol-xxaabb"; cloud_instance terminate => "i-ffgghhjj"; cloud_colume delete => "vol-xxaabb"; };

task "prepare", group => "ec2", sub { run "apt-get update"; install package => "apache2"; service apache2 => "start"; };

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