Ruby - remote method invocation

ruby-talk
1

How to start/run a ruby program in a remote machine in a LAN using a
ruby program in local machine?

···

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Posted via http://www.ruby-forum.com/.

2

Net-ssh. Or capistrano!

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On Sep 21, 2012, at 12:29 AM, ajay paswan <lists@ruby-forum.com> wrote:

How to start/run a ruby program in a remote machine in a LAN using a
ruby program in local machine?

--
Posted via http://www.ruby-forum.com/\.

3

Either using ssh, the netssh gem, or by using sockets to implement communication.

Brandon Weaver

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On Sep 21, 2012, at 1:29 AM, ajay paswan <lists@ruby-forum.com> wrote:

How to start/run a ruby program in a remote machine in a LAN using a
ruby program in local machine?

--
Posted via http://www.ruby-forum.com/\.

4

I am no expert but I use this to manage devices.

require 'rubygems'
require 'net/ssh'
require 'net/ssh/telnet'

class SSH
  attr_accessor :errors

  def initialize(creds)
    begin
      @ssh_session = Net::SSH.start(creds[:host], creds[:user], :password
=> creds[:password], :keys => )
      @ssh = Net::SSH::Telnet.new("Session" => @ssh_session, "Prompt" =>
creds[:prompt])
      @errors = false
    rescue Exception => e
      @errors = e
    end
  end

  def cmd(command)
    @ssh.cmd(command)
  end

  def close
    @ssh_session.close
  end

end

I would then create something like this depending on the device type I was
connecting to.

require './ssh.rb'

class Cisco_ssh < SSH
  attr_accessor :config, :users
  def initialize(creds)
    begin
      @host = creds[:host]
      @users =

      creds[:prompt] = /.*>|.*#/
      super(creds)
      @ssh.cmd("en\r#{creds[:enable]}")
      @ssh.cmd("term len 0")

      @config = @ssh.cmd("show run")
      get_users
    rescue Exception => e
      @errors = e
    end
  end

  def enable(pass)
    @ssh.cmd("en\r#{pass}")
  end

  def termlen=(length)
    @ssh.cmd("term len #{length}")
  end

  def close
    termlen=24
    @ssh_session.close
  end

  def update_config
    @config = @ssh.cmd("show run")
    get_users
  end

  private
  def get_users
    @config.lines.each do |line|
      if line.include? "username"
        user = {}
        user[:username] = line.split[1]
        user[:password] = line.match(/(password|secret).\d.*/)[0].split[2]
        @users.push(user)
      end
    end
  end
end

This stuff is pretty old so I should probably review it and clean it up.
Anyhow feel free to use it. I am still learning Ruby myself. Criticisms are
welcome!

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On Fri, Sep 21, 2012 at 12:38 AM, Jam Bees <jam@jamandbees.net> wrote:

Net-ssh. Or capistrano!

On Sep 21, 2012, at 12:29 AM, ajay paswan <lists@ruby-forum.com> wrote:

> How to start/run a ruby program in a remote machine in a LAN using a
> ruby program in local machine?
>
> --
> Posted via http://www.ruby-forum.com/\.
>

--

vizualize.me/cliffrosson

5

Brandon Weaver wrote in post #1076989:

Either using ssh, the netssh gem, or by using sockets to implement
communication.

Brandon Weaver

Thank you everybody.. for you amazingly helping words.. I think I'll go
for socket as I am not feeling comfortable with netssh!!! thanks again!

···

--
Posted via http://www.ruby-forum.com/\.

6

There's also DRb. Although then you have to

a) ensure a DRb server is running on the other machine
b) do authentication yourself.

It all depends... :slight_smile:

Kind regards

robert

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On Sat, Sep 22, 2012 at 2:53 PM, ajay paswan <lists@ruby-forum.com> wrote:

Brandon Weaver wrote in post #1076989:

Either using ssh, the netssh gem, or by using sockets to implement
communication.

Brandon Weaver

Thank you everybody.. for you amazingly helping words.. I think I'll go
for socket as I am not feeling comfortable with netssh!!! thanks again!

--
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/