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The Buckblog

assorted ramblings by Jamis Buck

Preview Releases: Net::SSH, Net::SSH::Multi

19 April 2008 — 2-minute read

I’m almost ready to do a preview release of the next Capistrano version, which is built on top of the new Net::SSH library. To do that, though, I need to prime the pump by pushing out a few small fixes to Net::SSH. So, behold!

Net::SSH 2.0 Preview Release #4 (1.99.3):

gem install --source net-ssh

This release has two minor new features and two fixed bugs:

  • Make sure HOME is set to something sane, even on OS’s that don’t set it by default. This makes things work a little better on Windows than before. (Ahem…any windows users out there that want to start playing with Net::SSH…I’d love to hear from you how it does.)
  • Add a :passphrase option to specify the passphrase to use with private keys. This lets you use encrypted keys without interaction (though since it requires you to hard-code the passphrase in your script…it kind of makes it pointless to use an encrypted key. Still, I’ve had lots of requests for this, and Francis Sullivan finally provided a patch).
  • BUG FIX: a new auth-agent connection will now be opened for every auth-agent channel request, rather than reusing a single auth-agent connection. This fixes some rather bizarre errors on some hosts.
  • BUG FIX: explicitly provided keys (those given via the :keys option) are now loaded correctly, thanks to some timely File.expand_path’ing provided in a patch from Thomas Hudson.

Net::SSH::Multi 1.0 Preview Release #2 (0.99.1)

Unrelated to Capistrano (since the next release of cap won’t be using it), I’m also pushing out a second preview release of Net::SSH::Multi, a library for managing multiple Net::SSH connections in parallel.

gem install --source net-ssh-multi

This release has a single bug fix:

  • BUG FIX: don’t try to do on closed streams. This fixes a problem related to auth-agent channels getting closed and causing the parallel session processing to blow up.

Capistrano 2.3.0 preview release?

I’ll hopefully have a preview release for the next Capistrano version next week sometime. It’s close! I’m using it myself, locally, but I want to try it on a few more deploys to make sure it really works as advertised. I haven’t actually run any timings on it, but Capistrano with Net::SSH v2 feels significantly faster than it was on Net::SSH 1.x. Stay tuned!

Reader Comments

Nice post! Net::SSH 2.0 is working with all Ruby version?

@Kfz, define “all”. :) Net::SSH v2 is not working with Ruby 1.9, and won’t until after I release 2.0. It is known to work with 1.8.5 and 1.8.6, and probably works with 1.8.2 to 1.8.4 as well. It will not work with Rubies earlier than 1.8.2 due to missing interfaces in the Ruby OpenSSL bindings.