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Ironic - PXE boot

asked 2016-08-17 03:41:07 -0600

matancha gravatar image

Hi, I have a question that the Ironic documentation doesn't seem to really answer. How exactly the Openstack networks are to be connected to the baremetal nodes. When the baremetal node PXE boots, is it through the tagged flat network (which I understand is a problem), or does it have to have a dedicated port connected to the untagged PXE openstack network?

My goal is to have as few ports as possible that need to be connected to the Ironic Conductor.

Thanks for your help!

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answered 2016-08-25 00:32:09 -0600

sunnyarora gravatar image

As per my understanding, You would need atleast 2 Interfaces of Bare Metal node ( One for IPMI and another NIC interface ). If you Look at the Architecture of Ironic. The Ironic conductor is what does the heavy lifting. It is responsible for the powering on and off of hardware, and the actual provisioning and decommissioning of instances onto the hardware. Ironic also has some other dependancies, such as PXE, DHCP, NPB, TFTP, and IMPI

image description

You can refer pdf doc from Fujitsu

Drivers Provides interface between Ironic and baremetal nodes. Default diver controls nodes with IPMI. Hardware vendors implement their own drivers to provide improved performance and additional functions For Example : - iRMC driver (Fujitsu) - iLO driver (HP) - DRAC driver (Dell)

It works like 1. Ironic powers on a baremetal node using a driver 2. The baremetal node gets a deployment image 3. The deployment image configures iSCSI target 4. Ironic copies a user OS image to the baremetal node 5. Ironic reboots the baremetal node 6. The baremetal is booted by the user image image description

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You can also refer this good article from Intel

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Really helpful answer!

matancha gravatar imagematancha ( 2016-08-30 04:41:07 -0600 )edit

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Asked: 2016-08-17 03:41:07 -0600

Seen: 626 times

Last updated: Aug 25 '16