Outage #425

Information

Begins at:	2018-01-06 03:00:00 CET
Duration:	60 minutes
Type:	maintenance
State:	resolved
Impact:	system_restart
Affected systems:	Node vpsadmin1.prg Node node1.prg Node node2.prg Node node3.prg Node node4.prg Node node14.prg Node node3.brq Node node1.pgnd
Summary:
	English: Intel CPU bug workaround
	Česky: Aplikovani zaplaty pro chybu v Intel CPU
Description:
	English: A severe bug has been found in Intel CPUs. Unfortunately Intel is all we have now, so we have to apply a workaround as a kernel patch. Which, for one, will slow down performance of our systems. And as of writing this, the patch is not out for our kernel yet (or any nicely portable version for this venerable kernel); but should be soon, at least from Red Hat, if not OpenVZ team (in which case we'll change the announcements accordingly to allow for more QA before deploying). There's a lot of sources, for one of them all (and then Your Favorite Search Engine should spit out tons of other resources if you search for 'Intel PTI bug') -> https://www.reddit.com/r/sysadmin/comments/7nl8r0/intel_bug_incoming/
	Česky: Byla nalezena vazna chyba v Intelich procesorech. Bohuzel jedeme jenom na Intelu, takze budeme muset aplikovat patch do jadra, ktery nam pravdepodobne o neco uzere z CPU vykonu. Jak to pisu, tak patch pro nase jadro jeste neni; pokud neprijde od OpenVZ, naportujeme patch od Red Hatu, jakmile bude venku. V takovem pripade upravime plan rebootu, abychom meli vic casu to otestovat. Odkazu, o co jde, je hodne, kdyztak hodte 'Intel PTI bug' do Sveho Oblibeneho Vyhledavace (tm), vyplivne toho hromadu -> https://www.reddit.com/r/sysadmin/comments/7nl8r0/intel_bug_incoming/
Handled by:	Pavel Šnajdr, Jakub Skokan, Richard Marko

Updates

Date	Summary	Reported by
2018-01-03 20:04:29 CET		Jakub Skokan
State: announced
2018-01-04 21:12:01 CET	English: Postponed by a day, patch not yet available Česky: Odlozeno o den, patch zatim neni k dispozici	Jakub Skokan
Begins at: 2018-01-06 03:00 CET
2018-01-06 03:35:39 CET	English: ok Česky: ok	Pavel Šnajdr
State: resolved