Question

我的代码需要我连接到一台服务器，rsync连接到另一台服务器，然后连接到第二台服务器并在其上运行一堆命令。但是没有失败，第二个SSH连接会引发'do_open_failed': open failed (1) (Net::SSH::ChannelOpenFailed)错误。我在这里做错了吗，有没有办法正确关闭第一个连接，使第二个连接连接？

Net::SSH.start(self.from_creds['host'], self.from_creds['user'], :password => self.from_creds['password']) do |ssh|
  channel = ssh.open_channel do |ch|
    ch.exec "/usr/bin/rsync -e ssh -varuzP --exclude=sys-export --delete #{self.from_creds['filepath']}/#{self.client_id}/ #{self.scp_to}/#{new_client_id}" do |ch, success|
      raise "could not execute command" unless success

      # "on_data" is called when the process writes something to stdout
      ch.on_data do |c, data|
        $stdout.print data
      end

      # "on_extended_data" is called when the process writes something to stderr
      ch.on_extended_data do |c, type, data|
        $stderr.print data
      end

      ch.on_close { puts "done!" }
    end
  end
  channel.wait
end
Net::SSH.start(self.to_creds['host'], self.to_creds['user'], :password => self.to_creds['password']) do |ssh1|
  # Do some other stuff here
  tmp_path = "#{self.to_creds['filepath']}/tmp/#{Time.now.to_i}"
  ssh1.exec "mkdir -p #{tmp_path}"
  ssh1.exec "cd #{self.to_creds['filepath']}/#{new_client_id}"
end

Answer 1

根据文档，exec不会阻止。尝试使用exec!代替。

Net::SSH.start(self.to_creds['host'], self.to_creds['user'], :password => self.to_creds['password']) do |ssh1|
  # Do some other stuff here
  tmp_path = "#{self.to_creds['filepath']}/tmp/#{Time.now.to_i}"
  ssh1.exec! "mkdir -p #{tmp_path}"
  ssh1.exec! "cd #{self.to_creds['filepath']}/#{new_client_id}"
end

可替换地，

Net::SSH.start(self.to_creds['host'], self.to_creds['user'], :password => self.to_creds['password']) do |ssh1|
  # Do some other stuff here
  tmp_path = "#{self.to_creds['filepath']}/tmp/#{Time.now.to_i}"
  ssh1.exec "mkdir -p #{tmp_path}"
  ssh1.exec "cd #{self.to_creds['filepath']}/#{new_client_id}"
  ssh1.loop
end

SSH连接一个接一个，第二个失败

1 个答案: