Testing oVirt...
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@francesco-provino said in Testing oVirt...:
Any real advantage vs plain KVM?
oVirt is more in line with RHEV. If all you want to do is run VMs, a plain KVM setup is a simple.
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@francesco-provino This is a 3 + 1 node hyperconverged cluster with Gluster, HA, Live Migration etc!
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Very good more pics and stuff please, did you face any hosts disconnections I faced that alot
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@fateknollogee said in Testing oVirt...:
@francesco-provino This is a 3 + 1 node hyperconverged cluster with Gluster, HA, Live Migration etc!
That's what I was wondering. I didn't know if it was a self hosted engine (couldn't think of the name last night) or multiple node setup.
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@stacksofplates said in Testing oVirt...:
@fateknollogee said in Testing oVirt...:
@francesco-provino This is a 3 + 1 node hyperconverged cluster with Gluster, HA, Live Migration etc!
That's what I was wondering. I didn't know if it was a self hosted engine (couldn't think of the name last night) or multiple node setup.
This setup uses the Hosted Engine.
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@emad-r said in Testing oVirt...:
Very good more pics and stuff please, did you face any hosts disconnections I faced that alot
No host disconnections at all.
The current version (4.2.5) is very easy to setup.
I will post some pics of an upcoming version, oVirt Node (4.3) based on Fedora 28. -
oVirt Node v4.3 (based on Fedora 28) - this is pre-release:
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So you're saying ovirt is pushing the Xen guys to get into gear as this appears to be the entire package, with FOSS.
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@dustinb3403 said in Testing oVirt...:
So you're saying ovirt is pushing the Xen guys to get into gear as this appears to be the entire package, with FOSS.
I believe oVirt is being billed as "vSphere for FOSS"
You're probably not going to move the Xen/XS/XCP-ng guys off their spot.
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Can we use the oVirt system to manage an existing KVM server?
( I want to try oVirt, but really don't want to wipe out the system I currently have set up ) -
@dafyre said in Testing oVirt...:
Can we use the oVirt system to manage an existing KVM server?
( I want to try oVirt, but really don't want to wipe out the system I currently have set up )I tried setting up oVirt a few versions ago and from what I could find, it's almost expected you have a minimum of 3 physical hosts for it.
So no, you won't be able to manage a standalone KVM server since everything has to get built to be managed by the oVirt Engine.
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@dafyre said in Testing oVirt...:
Can we use the oVirt system to manage an existing KVM server?
( I want to try oVirt, but really don't want to wipe out the system I currently have set up )Unfortunately not.
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Let us talk about Gluster, how do you feel safe with it ?
saw you choose an option with RAID 6, i dont get that cause from my trial, I make RAID and group disks then create Gluster volume from those mdraid volume, but it seems you did RAID 6 afterwards, hmm whats the logic behind that ?
What type of Gluster volume are you using, just distributed ?
I m still learning HCI so thus the beginner vibe
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@francesco-provino said in Testing oVirt...:
Any real advantage vs plain KVM?
Scaling KVM basically, if you have 1 or 2 KVM servers thats fine, but if you want more you need better management that logging in each one.
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@emad-r said in Testing oVirt...:
Let us talk about Gluster, how do you feel safe with it ?
saw you choose an option with RAID 6, i dont get that cause from my trial, I make RAID and group disks then create Gluster volume from those mdraid volume, but it seems you did RAID 6 afterwards, hmm whats the logic behind that ?
What type of Gluster volume are you using, just distributed ?
I m still learning HCI so thus the beginner vibe
No RAID6, I'm using RAID10.
Gluster volume is Replicate + Arbiter
This is a good blog post to get you started: https://www.ovirt.org/blog/2018/02/up-and-running-with-ovirt-4-2-and-gluster-storage/
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@dustinb3403 said in Testing oVirt...:
@dafyre said in Testing oVirt...:
Can we use the oVirt system to manage an existing KVM server?
( I want to try oVirt, but really don't want to wipe out the system I currently have set up )I tried setting up oVirt a few versions ago and from what I could find, it's almost expected you have a minimum of 3 physical hosts for it.
So no, you won't be able to manage a standalone KVM server since everything has to get built to be managed by the oVirt Engine.
You can now do a single host w Gluster:
https://www.ovirt.org/documentation/gluster-hyperconverged/chap-Single_node_hyperconverged/Here's a screenshot of my single node install:
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@emad-r said in Testing oVirt...:
Let us talk about Gluster, how do you feel safe with it ?
Not sure, since I'm new to the whole Gluster concept.
saw you choose an option with RAID 6, i dont get that cause from my trial, I make RAID and group disks then create Gluster volume from those mdraid volume, but it seems you did RAID 6 afterwards, hmm whats the logic behind that ?
Hardware RAID is recommended instead of MDADM.
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@fateknollogee Hardware RAID is recommended because a lot of people lack the practice and skill with software RAID to appropriately maintain/troubleshoot/fix software raid.
Plus you often get features like Blind swap.
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@dustinb3403 said in Testing oVirt...:
@fateknollogee Hardware RAID is recommended because a lot of people lack the practice and skill with software RAID to appropriately maintain/troubleshoot/fix software raid.
Plus you often get features like Blind swap.
Nope...
The folks at RH say, currently, performance is better with HW RAID & that is how most of their testing/validation is done. -
@fateknollogee said in Testing oVirt...:
@dustinb3403 said in Testing oVirt...:
@fateknollogee Hardware RAID is recommended because a lot of people lack the practice and skill with software RAID to appropriately maintain/troubleshoot/fix software raid.
Plus you often get features like Blind swap.
Nope...
The folks at RH say, currently, performance is better with HW RAID & that is how most of their testing/validation is done.That's odd, but okay. I would generally think they make the recommendation because they know there is a huge lack of understanding on how software raid needs to be managed.
