(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 0.45

Release notes for 0.45

These are the changes in 0.45 release.

We want to thank all the people for contributing code and to fill bug reports. This helps making Rex better and better :)


Changes in the Cloud API

my $instance = cloud_instance create => { image_id => "ccd8bcab-8ad2-4744-8227-08279fab7a42", name => "ostack01", plan_id => 2, volume => $vol_id, };
-   Terminating an instance and removing the volume.

    <pre><code class="hljs">cloud_instance terminate =&gt; <span class="hljs-type">$instance</span>-&gt;{id};

cloud_volume delete => $vol_id;


Changes in the core. These include new resources and new options for existing one.

# somewhere else in the code notify run => "kill-process-httpd";
-   *creates* option for run() resource.

    This tell Rex that this command creates a special file. If this file is found, the command won't get executed anymore.

    <pre><code class="hljs">run "<span class="hljs-string">download-ipxe</span>",

command => "wget -O /var/lib/tftpboot/undionly.ipxe http://boot.ipxe.org/undionly.kpxe", creates => "/var/lib/tftpboot/undionly.ipxe";

-   *only\_if* and *unless* option for run() resource.

    This will execute the command only if the command given will execute successfully (or terminate unsuccessfull).

    <pre><code class="hljs">run "<span class="hljs-string">add-service-os</span>",

command => "mysql -uroot < /tmp/data.sql", unless => "mysql -uroot dbschema -e 'SELECT id FROM os_template WHERE id=2' | grep -q 2";

-   support for customized environments. - \#316 - andrejzverev

    It is now possible to add custom environment variables to the run() resource.

    <pre><code class="hljs">run "<span class="hljs-string">my_command</span>",

env => { env_var_1 => "the value for 1", env_var_2 => "the value for 2", };

# somewhere else in the code file "/etc/httpd/httpd.conf", content => template( "templates/httpd.conf.tpl", %vars ), on_change => sub { notify service => "httpd"; };


Known bugs that has been fixed.

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