Timur, some numbers and devs recommendations you can find by link[0], it is our HA Guid, feel free to contribute.
Nastya. [0] https://wiki.openstack.org/wiki/HAGuideImprovements/TOC#HA_Intro_and_Concepts On Wed, Jun 3, 2015 at 1:06 PM, Timur Nurlygayanov < [email protected]> wrote: > Looks like I forgot to add the link to [1] in the first email: > > [1] https://github.com/stackforge/haos > > On Wed, Jun 3, 2015 at 12:50 PM, Timur Nurlygayanov < > [email protected]> wrote: > >> Hi team, >> >> I'm working on HA / destructive / recovery automated tests [1] for >> OpenStack clouds and I want to get some expectations from users, operators >> and developers for the speed of OpenStack recovery after some destructive >> actions. >> For example, how long cluster should be unavailable if one of three >> controller will be destroyed? I think that the right answer is '0 seconds, >> no downtime' - users shouldn't see anything strange when we lost one >> controller in our cloud (if it is 'true' HA configuration). >> In the real world I can see that such destructive scenarios require some >> time to recover the cloud (1-15 minutes in different cases) - and I just >> want to get your expectations or the requirements. >> >> How fast we can / should fully recover the cloud in the following cases: >> 1. Restart RabbitMQ services >> 2. Restart MySQL / Galera services >> 3. Restart Neutron services (like L3 agents) >> 4. Hard shutdown of any OpenStack controllers >> 5. Shutdown of the ethernet interfaces of management / data networks >> >> Of course, it depends on the configuration, but we can describe some >> common, 'expected', asseptance values (SLA) for downtime in differrent >> destructive cases and use them to verify the clouds today and in the future. >> We will use these values in HAOS project [1], which will allow to >> validate any clouds with the same scenarios and with the same SLA for >> recovery time. >> >> Any comments are welcome :) >> Thank you! >> >> -- >> >> Timur, >> Senior QA Engineer >> OpenStack Projects >> Mirantis Inc >> > > > > -- > > Timur, > Senior QA Engineer > OpenStack Projects > Mirantis Inc > > __________________________________________________________________________ > OpenStack Development Mailing List (not for usage questions) > Unsubscribe: [email protected]?subject:unsubscribe > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > >
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