Identify current host - Capistrano

Message from discussion Identify current host

Gary Richardson

More options 6 July, 16:06

From: Gary Richardson <gary.richard...@gmail.com>

Date: Mon, 6 Jul 2009 08:06:21 -0700

Local: Mon 6 July 2009 16:06

Subject: Re: [capistrano] Re: Identify current host

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Hmm. That's odd..$CAPISTRANO:HOST$ wasn't working for me on Friday. Must be
them gremlins.
Is there another variable I can use to get the current host in the ruby
code? This is what I'm trying to do:

task :bootstrap, :roles => [:master] do
# instanceids is an array containing hostname => instanceid
id = instanceids["$CAPISTRANO:HOST$"]
run "register_host -H $CAPISTRANO:HOST$ -s #{id}"
end

Obviously, $CAPISTRANO:HOST$ doesn't interpolate on the id = instanceids[]
line.

Thanks!

On Mon, Jul 6, 2009 at 3:31 AM, Rafael G. <r...@aspgems.com> wrote:

> Gary Richardson wrote:
> > Hey,

> > Two part question that I haven't been able to answer:

> > 1) can I get the current host a task is executing on? I've read some
> > stuff about $CAPISTRANO:HOST$, but it doesn't seem to work for me
> I tested this task and works for me:

> task :host_name do
> run "host $CAPISTRANO:HOST$"
> end

> What OS are you using? Could you paste your deploy.rb in
> someplace(gist.github, pastie,...)?

> > 2) if I have an array of values (let's say an array that maps ec2 host
> > names to ec2 instance id's), can I use this same method to look up
> > something from that array?
> Capistrano uses ruby If you can do it with ruby you can do the same in a
> capistrano task.

> --
> Rafa

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