(R)?ex Deployment & Configuration Management


Deprecating official Rex packages

As part of our efforts to simplify maintenance around RexOps projects, we have decided to stop building Rex packages on our side. We recommend relying on OS packages maintained by the various distributions in their respective upstream repositories, or to install Rex from CPAN.

Post-migration updates & clean-up

Over the course of the past weeks many clean-ups have been done, reaping the benefits provided by our new Statocles-based site:

New site engine for rexify.org

After months of work on a new site backend, we reached the MVP today for our site to be switched over to a new engine: from now on, our site will be maintained using the static site generator Statocles.



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

Professional support is also available.

» Home » Docs » Release notes » Release notes for 0.42

Release notes for 0.42


Net::OpenSSH connection mode - chenryn

As of this release it is possible to use Net::OpenSSH for the connection. With this it is also possible to use kerberos authentication and all features OpenSSH has (like ProxyCommand, etc.).

To use Net::OpenSSH you have to set the connection type in your Rexfile.

This fixes long standing pull request #70.

use Rex -feature => '0.42';
⁠set connection => 'OpenSSH';
⁠task 'yourtask', 'yourserver', sub {
⁠  say run 'uptime';

Kerberos authentication - chenryn

If you want to use kerberos authentication you have to use Net::OpenSSH.

⁠set connection => "OpenSSH";
⁠user "youruser";

Custom user for sudo command

It is now possible to use custom users for the sudo command.

⁠task "mytask", "server1", sub {
⁠  sudo {
⁠    user    => "foo",
⁠    command => "id",
⁠  };

new function delete_lines_according_to - liedekef

This function is similar to delete_lines_matching but with an other syntax and the possibility to use the on_change hook if the file was changed.

⁠task "cleanup", "server1", sub {
⁠  delete_lines_according_to qr{^foo:}, "/etc/passwd", on_change => sub {
⁠    say "removed user foo.";
⁠  };

new feature flag use_server_auth to enable auth properties in INI files

define server groups with special server properties in INI files

The INI file feature is improved to allow custom properties for servers and to allow inheritance of sections.

You have to use use_server_auth feature flag for this.

# Rexfileuse Rex -feature => [qw/use_server_auth/];
⁠use Rex::Group::Lookup::INI;
; my group file


# the backends



[memcache < redis]
memcache02 user=root password=foob4r sudo=true services=apache,memcache

This will create the following groups:

frontends: fe01, fe02, fe03, fe04, fe05
backends: be01, be02, be04
db: db01, db02
redis: be01, be02, be04, redis01, redis02
memcache: be01, be02, be04, redis01, redis02, memcache01, memcache02

memcache02 will use custom authentication and there will be a special option "services" for this server that can be queried like this:

⁠task "mytask",
⁠  group => "memcache",
⁠  sub {
⁠  say connection->server->option("services");
⁠  };

cwd option for run command

⁠run "ls -l", cwd => "/home";

Speed improvements


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