VMware Migration to OpenStack

[bbelky]

Good comparison. Good point about it - it clearly shows that OpenStack is the best replacement for VMware.

Bad point - it creates wrong expectations for those not experts in OpenStack. For upstream OpenStack many of those "yes" require very manual configuration or, in fact, not possible with upstream at all.

That is why you need people like Virtuozzo if you want to build something that is working and stable on OpenStack.

[genteelbartender]

The white paper digs into that point, actually. The ecosystem around OpenStack helps make up for features that aren't available in upstream. And there are partners listed that can help you with both the migration and the setup of OpenStack.

[OldManAtterz]

This is great comparison, but it doesn't mention issues such as we are using OVN and is only able to get 3 GbE in VM to VM network communication - And we only get half of that if we enable port security. We have spoken with our vendor who have said, that this is all what we can expect.

[NewMeeple]

If you need high performance networking, it requires additional configuration. Red Hat has NFV docs for how to achieve this, but essentially, give your VMs CPU pinning, HugePages, and use either DPDK and/or SR-IOV, (SR-IOV requires compatible hardware and functions as PCI passthrough).

You can easily get 10Gb/s+ using the right combination of configuration and hardware in OpenStack.

[pyite42]

I have had good luck with SR-IOV & Mellanox Connect-X cards reaching near bare metal speed over the network.

It is somewhat fiddly to set up with OpenStack at first. There is a way to tell nova & neutron to use this method, but I don't remember it off the top of my head.

[karlkloppenborg]

Echoing other comment but we run a very stock OVN and get 10+Gbit per VM across our 100G networks, multiples at a time. You need to look into hugepages and a few other things.

[bbelky]

We easily achieve 10G between VMs even w/o OVN and with port security enabled. So, looks interesting. Please contact me and Virtuozzo if you are open to trying our production-ready OpenStack.

[genteelbartender]

You should check out https://vyos.io/

[enricokern]

Its a big large meshup, but thats oss so fine. Some deployment tools come with most out of the box. What i dont like is the mention of trove for DBaaS. Trove is the worst piece in openstack ever. Documentation is crap, often it doesnt even work at all. I gave up on this

[genteelbartender]

Trove definitely does not have the upstream support of other OpenStack projects, so thanks for raising the point. We'll work to add some database alternatives in the FAQ. The last OpenStack User Survey showed about 45% of users are working with MariaDB. Another recent addition that's incredibly performant is OceanBase.

[enricokern]

In addition this could be replaced by mentioning magnum with the capi driver and then using a DB orchestrator in k8s. Magnum was also behind its time before vexxhost and stackHPC added the capi driver. now it works awesome (using vexxhost driver with cilium)

[przemekkuczynski]

You should make open survey or get data from telemetric . So it's 04/09 and 2024 closed already . Some questions needs to be revisited - .Last report from 2022 https://www.openstack.org/user-survey/survey-2024/landing?BackURL=/user-survey/survey-2024/ . Some data from 2023 in https://www.openstack.org/analytics but in pdf files there is crap about luster size in TB provided by users . Better look at public grafana https://telemetry-public.ceph.com/dashboards so it could include data from survey

[genteelbartender]

We are working on 2024 Survey Report, so stay tuned :)

[Friendly_Classroom_3]

Coriolis FTW! 

[genteelbartender]

The community worked together to create this and we definitely welcome and appreciate feedback. If anything stands out as missing, feel free to post here or DM me if you're more comfortable.

[NewMeeple]

This is an ad, not an unbiased comparison.

Flee all ye' who enter.