Net::SSH connection fails from inside resque job
I have an app that sets creates EC2 instances - I have a resque ta开发者_JAVA百科sk that will configure the server (via ssh) once it's up and running:
Net::SSH.start(server.dns_name, 'root', :keys => ['~/.ssh/testkey.pem'], :paranoid => false, :verbose => :debug) do |ssh|
result = ssh.exec!("ls -l")
puts result
end
I get an error:
*** (Job{serverbuild} | ServerBuilder | [22]) failed: #<Errno::ECONNREFUSED: Connection refused - connect(2)>
If I run this from irb, or from my rails app, it's connects just fine. Any thoughts?
It's a timing issue - EC2 instances are "up" before the will accept ssh requests. I rescued the error retried again in 20 seconds (up to 5 times). working now.
begin
Net::SSH.start(server.dns_name.to_s, 'root', :keys => ['/Users/stevebrewer/.ssh/testkey.pem'], :paranoid => false) do |ssh|
result = ssh.exec!("ls -la")
puts result
end
rescue
if(retries < 5)
Resque.enqueue_at(20.seconds.from_now, ServerBuilder, server_id, retries + 1)
end
end
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