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02.02.2021 – 05.02.2021 Power Outage
Status colour Red title updated All cloud compontens (and the VMs) will be shut down. We expect the Cloud to be fully operational during Friday, 5.2.2021.
The cloud has returned to operation.
Date: Thu, 28 Jan 2021 15:06:55 +0100 From: Niels Fallenbeck <Niels.Fallenbeck@lrz.de> To: LRZ Compute Cloud Users <firstname.lastname@example.org> Subject: [Cloud Users] Service interruption shifted to: 02.02.21 16:00 -> 05.02.21 X-Editor: VIM - Vi IMproved 8.2 <http://www.vim.org> User-Agent: Mutt/2.0.5 (2021-01-21) Darwin 19.6.0 LRZ Compute Cloud Users! Unfortunately, the time of the power interruption has changed due to external delays by 1 day. Sorry für the information that reached us today. To keep the downtime as short as possible, we will shut down the cloud one day later that mentioned in our previous mail on Tuesday, 02.02.2021, afternoon at 16:00 CET. We expect that the cloud will become available again on Friday, 05.02.2021. Sorry for any inconveniences, best regards, Niels
LRZ Compute Cloud Users, in the meantime the time window of the power interruption has been narrowed down to: Tuesday, 2.2.2021 - Wednesday, 3.2.2021 We will start shutting down the cloud system on Monday, 1.2.2021, afternoon around 17:00 (5 PM). Thanks for your understanding and sorry for any inconvenience, Niels On 14.01.21 at 09:28, Niels Fallenbeck <email@example.com> wrote: > LRZ Compute Cloud Users, > > In week 5 (February 1, 2021 - February 5, 2021), work will be carried out on > the LRZ power infrastructure with regard to future computer systems. The LRZ > Compute Cloud is affected by this measure. During this time, the cloud > infrastructure will not be available for about 3 days. The entire cloud needs > to be switched off, running VMs are shut down. > > Unfortunately, I can not tell you the exact time of the work at the moment, as > it depends on preparations that will take place during the next week. > > As soon as I know the exact time of the service interruption, I will inform > you again in more detail. > > Warm regards and sorry for any inconvenience, > Niels -- Dr. Niels Fallenbeck Leibniz-Rechenzentrum (LRZ), IT-Infrastruktur Server und Dienste (ITS) Boltzmannstr. 1, 85748 Garching, Germany Phone: +49 89 35831-7860
26.05.2020 – 29.05.2020 Maintenance Window
Alle VMs werden in diesem Zeitraum heruntergefahren
09.07.2019 – 12.07.2019 Maintenance Window
- MTU issue: The default Networks MWN and internet public to all user have been configured incorrectly .At the moment the MTU size of a network interface attached to a VM is set to 1450. Docker and Windows "do not like this". → we will migrate all current network interfaces to a copy of the internet and MWN networks which will finally run a MTU size of 1500.
- Impact to the users of the VM → all MAC addresses inside the VM will change, but all IP addresses (internal/floating) will stay the same and work → This is considered to be be OK.
- All VMs will be rebooted due to a necessary firmware upgrade of the hardware and the need to partially recable the hardware.