Vážení uživatelé,
z důvodu mimořádně vysokých teplot v lokalitě Brno dojde k preventivnímu omezení výkonu e-INFRA CZ G2 OpenStack cloudu, abychom snížili množství odpadního tepla serverů, a ulevili tak chladicímu systému datacentra, v němž jsou servery umístěny.
Omezení bude realizováno nastavením frekvence všech CPU jader, která jsou použita pro běh virtuálních strojů, na jejich minimální podporovanou hodnotu. V průměru jde o omezení na cca 40 % maximální frekvence.
Dopadem bude snížení výpočetního výkonu a odezvy všech uživatelských instancí.
Omezení potrvá od pátku 26.6.2026 odpoledne do pondělí 29.6.2026 ráno. O případných změnách Vás budeme informovat.
Omlouváme se za komplikace.
Eskalační kontakt: Radek Polášek - 252651@mail.muni.cz.
Dear Users,
Due to exceptionally high temperatures in the Brno area, we will be implementing a precautionary performance throttling of the e-INFRA CZ G2 OpenStack cloud to reduce the amount of waste heat generated by the servers and thereby relieve the cooling system of the data center where the servers are located.
The restriction will be implemented by setting the frequency of all CPU cores used to run virtual machines to their minimum supported value. On average, this represents a reduction to approximately 40% of the maximum frequency.
This will result in reduced computing performance and response times for all user instances.
The restriction will be in effect from Friday, June 26, 2026, in the afternoon until Monday, June 29, 2026, in the morning. We will keep you informed of any changes.
We apologize for the inconvenience.
Escalation point: Radek Polášek - 252651@mail.muni.cz.
Rádi bychom Vás požádali o součinnost v řešení bezpečnostních zranitelností "Copy Fail" a "Copy Fail 2 Dirtyfrag". Pokud provozujete v našem cloudu Linux servery, pak Vás žádáme o nainstalování všech aktualizací a reboot do posledního opraveného Linuxového jádra. Více o souvisejících akcích se lze dočíst zde.
We would like to ask for your cooperation in addressing the "Copy Fail" and "Copy Fail 2 Dirtyfrag" security vulnerabilities. If you are running Linux servers in our cloud, we ask that you install all updates and reboot to the latest patched Linux kernel. You can read more about related actions here.
What is e-INFRA CZ Cloud?
e-INFRA CZ Cloud offers a flexible computing and storage environment suitable for a wide variety of applications. These include, but are not limited to, web-based services and portals, container hosts, HPC worker nodes, CI/CD worker nodes, database hosts, and numerous complex scientific use cases.
e-INFRA CZ Cloud
The e-INFRA CZ Cloud is operated by MetaCentrum, CESNET department responsible for coordination of computing services, on behalf of e-INFRA CZ. Partners involved in the development of the e-INFRA CZ Cloud, providing computing resources and using the cloud service:
- IT4Innovations National Supercomputing Center,
- Institute of Computer Science of Masaryk University
- and other partners representing national and international user communities
Accessing e-INFRA CZ Cloud
e-INFRA CZ Cloud is accessible to
- all users of the Czech e-infrastructure for science, development, and education,
- selected national and international user communities.
Other e-INFRA CZ Cloud Computing Services
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Container cloud
Simplify your infrastructure with container platform service. Streamline deployment, scaling and management of your research applications with Kubernetes.
-
SensitiveCloud
Work with your sensitive data in Trusted Research Environment which is designed to process the data following ISO 27K and other standards. Tailored for the academic purposes.