where to specify the public key and username in ssh command?

[Tommy Chheng]

I'm trying to run a series of commands via Fog's ssh method, but im unsure where to specify the public key and the username in the ssh command? 

Trying:

compute = Fog::Compute.new(:provider => "AWS", 

                             :aws_access_key_id => AWS_ID, 

                             :aws_secret_access_key => AWS_KEY)

server = compute.servers.last

server.ssh(['ls'])

thanks,

Tommy

[geemus (Wesley Beary)]

You can add it right there, like this:

compute = Fog::Compute.new(:provider => "AWS", 

                             :aws_access_key_id => AWS_ID, 

                             :aws_secret_access_key => AWS_KEY)

server = compute.servers.last

server.username = 'username'

server.public_key_path = 'path/to/key'

server.ssh(['ls'])

or you can specify them in your ~/.fog file under the default key and it will use that.

[Tommy Chheng]

I tried a system ssh command and it works, but server.ssh still fails:

require 'rubygems'

require 'fog'

require 'rake'

require File.join(File.expand_path(File.dirname(__FILE__)), 'install_cmds')

AWS_ID = XXX

AWS_KEY = YYYY

PUBLIC_KEY_PATH =  File.join(File.expand_path(File.dirname(__FILE__)), '..', 'ec2-keys', 'XXX.pem')

PRIVATE_KEY_PATH =  File.join(File.expand_path(File.dirname(__FILE__)), '..', 'ec2-keys', 'YYYY.pem')

compute = Fog::Compute.new(:provider => "AWS", 

                             :aws_access_key_id => AWS_ID, 

                             :aws_secret_access_key => AWS_KEY)

server = compute.servers.last

server.username = 'ubuntu'

server.public_key_path = PUBLIC_KEY_PATH

#this fails with Net::SSH::AuthenticationFailed: ubuntu

server.ssh(["ls"])

#this works

system("ssh -i #{server.public_key_path} #{server.username}@#{server.dns_name} ls")

-- 
@tommychheng

http://tommy.chheng.com

[geemus (Wesley Beary)]

Oops, I think I told you slightly wrong. Looks like it is the private key path that really matters, not public.  Try something like this:

  server = compute.servers.last

  server.username = 'ubuntu'

  server.private_key_path = PRIVATE_KEY_PATH