[RFE] iPXE dynamic configuration

[Vladyslav Drok]

The current iPXE support depends on configuration files to be cached in the disk. This creates a dependency between a given ironic-conductor a given node (even without a conductor lock on a node) because that ironic-conductor is the only one able to boot that node. This also makes take-over more complicated because the new ironic-conductor will need to regenerate the iPXE configuration files for the new nodes it's now managing and update the DHCP server accordingly.

This RFE proposes to add support for dynamically generating iPXE configuration files when booting a node.

[Jim Rollenhagen (jim-rollenhagen)]

Spec is here and merged: https://review.openstack.org/#/c/177726/

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/369438

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/385572

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/387916

[OpenStack Infra (hudson-openstack)]

Change abandoned by Pavlo Shchelokovskyy (<email address hidden>) on branch: master
Review: https://review.openstack.org/387916
Reason: abandoned in favor of making both endpoints a core part of API

https://review.openstack.org/#/c/369438/

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/392290

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/393462

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/394396

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/394397

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/394398

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/394399

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/394396
Committed: https://git.openstack.org/cgit/openstack/ironic/commit/?id=687a16bd75440b0ab5c6eb7b8c7134a52aec106d
Submitter: Jenkins
Branch: master

commit 687a16bd75440b0ab5c6eb7b8c7134a52aec106d
Author: Pavlo Shchelokovskyy <email address hidden>
Date: Fri Nov 4 13:38:08 2016 +0200

    Convert iPXE boot script to Jinja template

    This will not affect those using custom out-of-tree boot scripts,
    as such files will be rendered as-is.

    This patch also moves template rendering to a common place and sets
    create_pxe_config to use it.

    Change-Id: Ie5c94fee26054a209d35a25a99f3e9f57bd39d14
    Partial-Bug: #1526275

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/402387

[OpenStack Infra (hudson-openstack)]

Change abandoned by Pavlo Shchelokovskyy (<email address hidden>) on branch: master
Review: https://review.openstack.org/402387
Reason: squashed into parent DNM patch