theforeman/foreman · error · RuntimeError

no unused port found

Error message

no unused port found

What it means

Error "no unused port found" thrown in theforeman/foreman.

Source

Thrown at app/models/compute_resources/foreman/model/vmware.rb:812

      case e.message
      when /The remote system presented a public key with hash (\w+) but we're expecting a hash of/
        raise Foreman::FingerprintException.new(
          N_("The remote system presented a public key with hash %s but we're expecting a different hash. If you are sure the remote system is authentic, go to the compute resource edit page, press the 'Test Connection' or 'Load Datacenters' button and submit"), Regexp.last_match(1))
      when /Cannot complete login due to an incorrect user name or password./
        raise Foreman::UsernameOrPasswordException.new(
          N_("Can not load datacenters due to an incorrect user name or password."))
      else
        raise e
      end
    end

    def unused_vnc_port(ip)
      10.times do
        port   = rand(5901..5964)
        unused = (TCPSocket.connect(ip, port).close rescue true)
        return port if unused
      end
      raise "no unused port found"
    end

    def vm_instance_defaults
      super.merge(
        :memory_mb  => 2048,
        :interfaces => [new_interface],
        :volumes    => [new_volume],
        :scsi_controllers => [{ :type => scsi_controller_default_type }],
        :nvme_controllers => [],
        :datacenter => datacenter,
        :firmware => 'automatic',
        :boot_order => ['network', 'disk']
      )
    end

    def set_vm_volumes_attributes(vm, vm_attrs)
      volumes = vm.volumes || []
      vm_attrs[:volumes_attributes] = Hash[volumes.each_with_index.map { |volume, idx| [idx.to_s, volume.attributes.merge(:size_gb => volume.size_gb)] }]

View on GitHub (pinned to 6b05625475)

When it happens

Trigger: Thrown at app/models/compute_resources/foreman/model/vmware.rb:812 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of theforeman/foreman@6b05625475 (2026-08-23). Data as JSON: /api/errors/fe0eff443edb41f2. Report an issue: GitHub.