CODEWITHSUNDEEP
rubyapiobjectssh
Thufir
Thufir

Reputation: 8497

ssh wrong number of arguments

Referencing the net-ssh API, what's the "best" way to pass connection parameters which come from a yaml?

error:

thufir@dur:~/ruby$ 
thufir@dur:~/ruby$ ruby ssh.rb 
{:host=>"localhost", :user=>"me", :port=>123, :password=>"mypassword"}
/home/thufir/.rvm/gems/ruby-2.0.0-p247/gems/net-ssh-2.6.8/lib/net/ssh.rb:165:in `start': wrong number of arguments (1 for 2..3) (ArgumentError)
    from ssh.rb:14:in `<main>'
thufir@dur:~/ruby$

code:

#!/usr/bin/env ruby
require 'rubygems'
require 'net/ssh'
require 'yaml'
require 'pry'

conn = YAML.load_file('conn.yml')

params = {:host => conn['host'], :user => conn['user'], 
          :port => conn['port'],:password => conn['password']}

puts params

Net::SSH.start(params) do |ssh|
  puts 'hi'
end

yaml:

user: me
password: mypassword
port: 123
host: localhost

is it possible to just pass one monolithic object? Or, do you have to break it up into host, user, et. al.?

Upvotes: 0

Views: 471

Answers (1)

C. K. Young
C. K. Young

Reputation: 223133

The host and user arguments must be specified as positional arguments, not as part of the options hash. Thus:

Net::SSH.start(conn['host'], conn['user'], port: conn['port'], password: conn['password']) do |ssh|
  # ...
end

Or you can just pass through all the YAML key-value pairs directly:

Net::SSH.start(conn.delete('host'), conn.delete('user'), conn) do |ssh|
  # ...
end

Upvotes: 4

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