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<p class="MsoNormal">Hi Ironic, Nova Developers,<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">I am currently working on implementing Intel Speed Select(ISS) feature[1] in Ironic and I have a use case where I want to change ISS configuration in BIOS after a node is provisioned.<o:p></o:p></p>
<p class="MsoNormal">Such use case of changing the configuration post deployment is common and not specific to ISS. A real-life example for such a required post-deploy configuration change is the change of BIOS settings to disable hyper-threading in order to
address a security vulnerability.<o:p></o:p></p>
<p class="MsoNormal">Currently there is no way of changing any BIOS configuration after a node is provisioned in Ironic. One solution for it is to allow manual deploy steps in Ironic[2](not implemented yet) which can be trigged by changing traits in Nova.<o:p></o:p></p>
<p class="MsoNormal">For this purpose, we would need to change a trait of the server’s flavor in Nova. This trait is mapped to a deploy step in Ironic which does some operation(change BIOS config and reboot in this use case).<o:p></o:p></p>
<p class="MsoNormal">In Nova, the only API to change trait in flavor is resize whereas resize does migration and a reboot as well.<o:p></o:p></p>
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In short, I am looking for a Nova API that only changes the traits, and trigger the ironic deploy steps but no reboot and migration. Please suggest.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Thanks in advance.<o:p></o:p></p>
<p class="MsoNormal"><b> </b><o:p></o:p></p>
<p class="MsoNormal">Regards,<o:p></o:p></p>
<p class="MsoNormal">Madhuri<o:p></o:p></p>
<p class="MsoNormal">[1] <a href="https://specs.openstack.org/openstack/ironic-specs/specs/not-implemented/support-intel-speed-select.html">
https://specs.openstack.org/openstack/ironic-specs/specs/not-implemented/support-intel-speed-select.html</a><o:p></o:p></p>
<p class="MsoNormal">[2] <a href="https://storyboard.openstack.org/#!/story/2005129">
https://storyboard.openstack.org/#!/story/2005129</a><o:p></o:p></p>
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