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RedHatQuickCourses / rhoso-intro

Introduction to Red Hat OpenStack Services on OpenShift Quick Course
https://redhatquickcourses.github.io/rhoso-intro/
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Review the presentation of AZ and cell concepts #10

Open flozanorht opened 6 months ago

flozanorht commented 6 months ago

AZ was a bad name. It's basically nova only and do not produce a failure domain, by itself. See slack discussion at https://redhat-internal.slack.com/archives/C0YDMFY2G/p1714411844090559?thread_ts=1713999141.099059&cid=C0YDMFY2G

sean-k-mooney sure but if you were doing a certifcation examp and the question was what is a nova AZ. then you shoudl recive 0 marks for sayign its a fault domain (...) if you say "its a nova api constract that allows you to group hosts for schdulign to enable uscases such as locality, or fault domains." then you get full marks (...) on thing to conserd is there is not expctation that a Nova AZ maps to the same set of host as a cidner or neutron AZ

flozanorht commented 6 months ago

Maybe use the wording from Greg Procunier on the same thread

Greg Procunier Sean, does the nova/compute team have a reference or abstract that captures what you have been speaking of from the perspective is "this is a highly resilient deployment (from the perspective of compute)" Greg Procunier with the understanding of fault resilient != fault tolerant (edited)