MAAS Follow-Up

Wed Nov 30 15:35:55 UTC 2016

To be more specific, I know I can use MAAS with cloud-init to configure non-boot hardware raid arrays/config. My concern is getting the os image installed to the boot volume *after* a hardware raid volume is created for it (the boot volume). Currently most of our new server builds are configured with 3 hardware raid arrays (of hdd’s), 1 for boot, the other 2 for storage, if it matters.

Regards,

Joe Arnet
Sr. System Administrator

317 Maynard • Ann Arbor, MI 48104
o: 734-887-2973  | m: 734-645-4073 | jarnet at barracuda.com<mailto:jarnet at barracuda.com>
Connect with us: barracuda.com/connect<http://www.barracuda.com/connect>

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From: <jorge.castro at gmail.com> on behalf of "Jorge O. Castro" <jorge.castro at canonical.com>
Date: Wednesday, November 30, 2016 at 10:28 AM
To: Joe Arnet <jarnet at barracuda.com>
Cc: Marco Ceppi <marco.ceppi at canonical.com>, "maas-devel at lists.ubuntu.com" <maas-devel at lists.ubuntu.com>
Subject: Re: MAAS Follow-Up

Adding in the maas list for this one:

On Tue, Nov 29, 2016 at 1:51 PM, Joe Arnet <jarnet at barracuda.com<mailto:jarnet at barracuda.com>> wrote:
It’s been awhile since I’ve used cloud-init, but I don’t believe it’s possible to create raid arrays for the “volume” you’ve just booted from. In my understanding, cloud-init takes over after the os image has been laid down/installed and upon first reboot post-install. In any case, I’ll read upon cloud-init to see if anything has changed, but I thought getting the raid array setup would occur before installing the os image, in a perfect world.

Regards,

Joe Arnet
Sr. System Administrator

317 Maynard • Ann Arbor, MI 48104
o: 734-887-2973<tel:(734)%20887-2973>  | m: 734-645-4073<tel:(734)%20645-4073> | jarnet at barracuda.com<mailto:jarnet at barracuda.com>
Connect with us: barracuda.com/connect<http://www.barracuda.com/connect>

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From: <jorge.castro at gmail.com<mailto:jorge.castro at gmail.com>> on behalf of "Jorge O. Castro" <jorge.castro at canonical.com<mailto:jorge.castro at canonical.com>>
Date: Tuesday, November 22, 2016 at 3:34 PM
To: Joe Arnet <jarnet at barracuda.com<mailto:jarnet at barracuda.com>>
Cc: Marco Ceppi <marco.ceppi at canonical.com<mailto:marco.ceppi at canonical.com>>
Subject: Re: MAAS Follow-Up

I've found out that this card is listed in our certified hardware database, so it should work out of the box: https://certification.ubuntu.com/catalog/component/scsi/4637/scsi%3AMR9271-8i/

There are some ways you can do this:

On installation by using cloud-init, where you can define storage: https://cloudinit.readthedocs.io/en/latest/topics/examples.html#disk-setup
Or just have puppet do it: https://cloudinit.readthedocs.io/en/latest/topics/examples.html#setup-and-run-puppet

or you can call puppet post-first-boot in the post-commissioning script. If you're planning on using RAID for the root disk then doing it in cloud-init is probably the way to go.

Let me know if you have any follow on questions.

On Tue, Nov 22, 2016 at 9:55 AM, Joe Arnet <jarnet at barracuda.com<mailto:jarnet at barracuda.com>> wrote:
Gentleman,

Thanks so much again for taking time to talk to us about MAAS. Before we start a POC, I’m curious as to if you found any answers/information about what it can do with our LSI/Avago raid cards (specifically I think it’s the commissioning script portion – can we get one to make an array on a hardware raid card as part of the process). Thanks!

Regards,

Joe Arnet
Sr. System Administrator

317 Maynard • Ann Arbor, MI 48104
o: 734-887-2973<tel:734-887-2973>  | m: 734-645-4073<tel:734-645-4073> | jarnet at barracuda.com<mailto:jarnet at barracuda.com>
Connect with us: barracuda.com/connect<http://www.barracuda.com/connect>

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