Automating SSH to windows with Ruby

Question

I have a 13 windows servers running Jenkins Slaves. For some reason (windows updates?), the Jenkins slaves periodically quit working and the Jenkins Slave service needs to be r

Answer 1

I tried it out in Pry and found two issues:

1. HOST is undefined, it should be host as this is the variable being passed into the block.
2. SSH.start expects the parameters to be STRING class, so add the .to_s as indicated below.

Also, I switched it to the idiomatic Ruby pattern of using do...end when a block extends past 1 line.

hosts.each do |host|
    puts "SSHing #{host} ..." 
    Net::SSH.start( host.to_s, USER, :password => PASS ) do |ssh|
        puts ssh.exec!('date')
        puts "Logging out..."
    end
end

I tested this in Pry and it's now working. I hope this helps.