canonical-ci-engineering team mailing list archive

[Larry Works <larry.works@xxxxxxxxxxxxx>]

Received this from Sean and wanted to ensure wider dissemination. The
core servers within CI/QA have redundant power supplies that are split
between A-side and B-side power so they should be unaffected. The test
servers (alkaid, onibi, onza, phac, rukbah, tarf, zmeu and zuijin) only
have a single power supply and should be powered down in preparation for
the electrical work.

The HP servers used by the cloud testers have redundant power that is
split between the two sides; they should be able to stay powered up. The
MaaS stack (lenovo-rd230-[01-12]) and the Openstack suite (test-[01-12])
only have single power supplies and should be taken down in preparation
for the electrical work.

None of the (current) networking infrastructure has redundant power so
the switches will go down when the side they are connected to is taken
down for the electrical work. This means, simply, that even if the
servers have redundant power and stay up for the electrical work you
will not have network access to them for a period of time.

~w

-------- Original Message --------
Subject: 	1SS power disruption Wed Nov 6 (Was: Fwd: Circuit Installation
11/6)
Date: 	Mon, 04 Nov 2013 11:32:01 -0500
From: 	Sean Sosik-Hamor <sean.sosik-hamor@xxxxxxxxxxxxx>
Organization: 	Canonical USA, Inc.
To: 	1ss-announce@xxxxxxxxxxxxxxxxxxx



Markley Group maintenance will be doing staggered circuit maintenance in
our suite at 1SS Wed Nov 6 from 21:00 - 00:00 EST (02:00 - 05:00 UTC).
A-side power will be disrupted for up to 1.5 hours then B-side power
will be disrupted for 1.5 hours.

This will only impact equipment at 1SS that does not have dual PSUs and
dual power feeds (most Certification hardware and QA hardware). All core
IS hardware is 2N (dual-power) compliant and will not be impacted.

Please pass on to your team members and encourage them to join the 1SS
Announce mailing list for future updates.

 * https://lists.canonical.com/mailman/listinfo/1ss-announce

Thanks!


-------- Original Message --------
Subject: 	Circuit Installation 11/6
Date: 	Mon, 4 Nov 2013 06:35:09 -0800 (PST)
From: 	Chris McLean
Reply-To: 	Chris McLean
To: 	sean.sosik-hamor@xxxxxxxxxxxxx <sean.sosik-hamor@xxxxxxxxxxxxx>



Dear Tenant,

Please be advised that we will be installing new electrical circuits in
Suite JX. OSHA regulations require us to temporarily shut off power to
the panels while installing the circuits. Therefore, we will temporarily
shut off power to these panels to perform this work on Wednesday,
November 6th, from 9pm-Midnight. During this window your installation
will be single corded electrically on one side for approximately 1.5
hours, then single corded electrically to the other side for an
additional 1.5 hours. If you are properly dual corded the work will be
transparent to you. Since we provide A & B power from separate panels
and we require that you adhere to 2N compliance, you will maintain
continuous power supported by UPS and generator. However, you will see
one side drop while we perform this work.

If you are unsure of your current status, please feel free to contact us
and we will be happy to assist you.

Best,

Chris McLean
Markley Group


-- 
Sean Sosik-Hamor | (p) +1 781 761 9089 | (m) +1 781 392 6985
Canonical USA, Inc. | Facilities and Events | Projects Engineer




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