3 Jan
2018
3 Jan
'18
7:12 p.m.
Datum a čas výpadku: 2018-01-05 03:00 CET
Očekavaná délka: 60 minut
Výpadek se týká serverů: node1.prg, node2.prg, node3.prg, node4.prg, node3.brq,
node1.pgnd
Typ výpadku: restart
Důvod: Aplikovani zaplaty pro chybu v Intel CPU
Výpadek řeší: Pavel Šnajdr, Jakub Skokan, Richard Marko
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/
ENGLISH:
Date and time: 2018-01-05 03:00 CET
Expected duration: 60 minutes
Affected systems: node1.prg, node2.prg, node3.prg, node4.prg, node3.brq, node1.pgnd
Outage type: restart
Reason: Intel CPU bug workaround
Handled by: Pavel Šnajdr, Jakub Skokan, Richard Marko
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/
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