Is oVirt suited for supporting long-lived VMs than OpenStack?

Hi guys, I'm wondering why people say oVirt is better suited for traditional workloads like long-lived VMs than OpenStack. does oVirt have some additional features for it? Of course, VMs in OpenStack might be intentionally killed according to resource pressure if auto-scaling is used. but otherwise, I guess OpenStack has enough to run long-lived VMs. thanks.

Hello On Thu, Aug 20, 2020 at 6:41 AM yam yam <hyunooudy@gmail.com> wrote:
Hi guys,
I'm wondering why people say oVirt is better suited for traditional workloads like long-lived VMs than OpenStack. does oVirt have some additional features for it?
oVirt is a traditional hypervisor, for "traditional" workloads (pets, not cattle). So it is suitable for vm deployed and running for months to years. Support snapshots, vm live migration from host to host etc etc. In several cases people looking at an alternative hypervisor for vmware lands on Openstack because it is a bigger project. After some testing they find out is not suitable for their use case. Instead oVirt is the right tool you're looking for if you want to have the same kind of workload you'll run on vmware. Luca -- "E' assurdo impiegare gli uomini di intelligenza eccellente per fare calcoli che potrebbero essere affidati a chiunque se si usassero delle macchine" Gottfried Wilhelm von Leibnitz, Filosofo e Matematico (1646-1716) "Internet è la più grande biblioteca del mondo. Ma il problema è che i libri sono tutti sparsi sul pavimento" John Allen Paulos, Matematico (1945-vivente) Luca 'remix_tj' Lorenzetto, http://www.remixtj.net , <lorenzetto.luca@gmail.com>

thanks, Luca As you said, I thought they have different use cases like pets vs cattle. but as OpenStack supports many features(like live migration, snapshot, vm HA, ...), it "I guess" seems to encompass what oVirt can do. so is there any specific use case oVirt only covers??

On Thu, Aug 20, 2020 at 10:02 AM yam yam <hyunooudy@gmail.com> wrote:
thanks, Luca
As you said, I thought they have different use cases like pets vs cattle. but as OpenStack supports many features(like live migration, snapshot, vm HA, ...), it "I guess" seems to encompass what oVirt can do.
so is there any specific use case oVirt only covers??
Hello, i know no one. But oVirt il 10x easier to manage because has a simpler setup (fewer components). Luca -- "E' assurdo impiegare gli uomini di intelligenza eccellente per fare calcoli che potrebbero essere affidati a chiunque se si usassero delle macchine" Gottfried Wilhelm von Leibnitz, Filosofo e Matematico (1646-1716) "Internet è la più grande biblioteca del mondo. Ma il problema è che i libri sono tutti sparsi sul pavimento" John Allen Paulos, Matematico (1945-vivente) Luca 'remix_tj' Lorenzetto, http://www.remixtj.net , <lorenzetto.luca@gmail.com>

Il Gio 20 Ago 2020, 10:08 Luca 'remix_tj' Lorenzetto < lorenzetto.luca@gmail.com> ha scritto:
On Thu, Aug 20, 2020 at 10:02 AM yam yam <hyunooudy@gmail.com> wrote:
thanks, Luca
As you said, I thought they have different use cases like pets vs cattle. but as OpenStack supports many features(like live migration, snapshot,
vm HA, ...), it "I guess" seems to encompass what oVirt can do.
so is there any specific use case oVirt only covers??
Hello,
i know no one. But oVirt il 10x easier to manage because has a simpler setup (fewer components).
Luca
--
In general, but also as you are comparing oVirt and OpenStack, that are the upstream projects for two Red Hat products, this link can help to begin to dig into traditional virtualization vs cloud computing: https://www.redhat.com/en/topics/cloud-computing/cloud-vs-virtualization Hih, Gianluca

thank you Gianluca for the good link. it was really helpful and, they are really different considering the notion. but as "OpenStack" implements many features not only for cloud but also for traditional workload, I guess it's also good fit for traditional workload. So, I'm wondering whether virtualization solutions like oVirt have meaningful strengths than OpenStack at this point in time. Best Regards

On Mon, Aug 24, 2020 at 12:56 PM yam yam <hyunooudy@gmail.com> wrote:
thank you Gianluca for the good link. it was really helpful and, they are really different considering the notion.
but as "OpenStack" implements many features not only for cloud but also for traditional workload, I guess it's also good fit for traditional workload. So, I'm wondering whether virtualization solutions like oVirt have meaningful strengths than OpenStack at this point in time.
Best Regards
Good that it was of help. Like other pieces of software, I see in recent years that "adjacent" technologies tend to extend their capabilities to each other, compenetrating ... For example latest virtualization features of Openshift: https://www.openshift.com/blog/blog-openshift-virtualization-whats-new-with-... https://www.redhat.com/files/summit/session-assets/2019/T47177.pdf and then these new VMs created in Openshift that should also be manageable from oVirt 4.4... Or OpenStack components landing in oVirt, like cinderlib and Open vSwitch In my opinion some basic reasons to use oVirt for virtualization instead of OpenStack: - if the main need is compute, because network and storage are already provided externally (while OpenStack as IAAS provides the whole "Infrastructure" as a server of the capital "I") - if there are already settled departments for network and storage, so that who manages VMs is not in charge of the other infrastructure components and with oVirt you easily keep segregation of duties/responsibilities - small environments in terms of compute nodes (2-3 but also something like 10) - very very easier upgrades through minor and major releases HIH, Gianluca
participants (3)
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Gianluca Cecchi
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Luca 'remix_tj' Lorenzetto
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yam yam