Seamicro Serial Console

https://blueprints.launchpad.net/ironic/+spec/seamicro-serial-console

This blueprint implements console driver – “ShellinaboxConsole” which support serial console access for Seamicro Fabric Compute system.

Problem description

Currently there is no support to get the serial console for physical server configured within the Seamicro Fabric Compute system.

Proposed change

Implements a console driver – “ShellinaboxConsole” – that uses telnet+shellinabox to connect to serial console of physical servers configured within the Seamicro Fabric Compute system. SeaMicro System provides telnet facility to connect to any of it’s physical server’s serial console. Port to which we telnet depends on server-id. “server-id” here, is what SeaMicro box refers to it’s server and not ironic node’s uuid. We already have the required information (server-id) captured as part of driver_info. Following are details,

  • Use existing ironic/drivers/modules/console_utils module to start/stop shellinabox. IPMI driver already use shellinabox to access their serial console.
  • Add seamicro_terminal_port property to CONSOLE_PROPERTIES. This is going to be port on which shellinabox listens locally.
  • Add new class ShellinaboxConsole inherited from base.ConsoleInterface in ironic/drivers/modules/seamicro.py
  • Implement the following methods in ShellinaboxConsole class.
    • validate() - Validate the Node console info.
      • param task : a task from TaskManager.
      • raises : InvalidParameterValue
    • start_console() - Start a remote console for the node.
    • stop_console() - Stop the remote console session for the node.
    • get_console() - Get the type and connection information about the console.
  • Add self variable self.console in PXEAndSeaMicroDriver.

Alternatives

None

Data model impact

None

REST API impact

None

RPC API impact

None

Driver API impact

None

Nova driver impact

None

Security impact

None

Other end user impact

None

Scalability impact

None

Performance Impact

None

Other deployer impact

The following which are already part of driver_info fields are required:
  • seamicro_api_endpoint - hostname or IP address of seamicro
  • seamicro_username - seamicro username
  • seamicro_password - seamicro password
  • seamicro_server_id - seamicro server id
Additionally one field need to be provided with driver_info
  • seamicro_terminal_port - node’s UDP port to connect to. Only required for console access.

Developer impact

None

Implementation

Assignee(s)

Primary assignee:
harshada-kakad

Work Items

Implement ShellinaboxConsole class inherited from base.ManagementInterface. Implement validate , start_console, stop_console, get_console.

Dependencies

None

Testing

Unit Testing will be added.

Upgrades and Backwards Compatibility

None

Documentation Impact

As part of this blueprint I would be documenting usage of this feature.

References

None