oVirt Testing
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As soon as my current desktop is migrated to my new machine, I will be spinning it back up as a KVM server. I will give oVirt a go for that.
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@tim_g said in oVirt Testing:
@stacksofplates said in oVirt Testing:
I’m curious to see how it works. It was slow (compared to bare KVM) the last time I tried it.
I haven't noticed any difference on VMs versus HyperV or straight KVM.
But I've a lot more testing to do, so we'll see. I'll keep that in mind.
It wasn’t VM performance, it was things like cloning and provisioning.
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@jaredbusch said in oVirt Testing:
As soon as my current desktop is migrated to my new machine, I will be spinning it back up as a KVM server. I will give oVirt a go for that.
You'll be required to have dual nics.
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@dustinb3403 said in oVirt Testing:
@jaredbusch said in oVirt Testing:
As soon as my current desktop is migrated to my new machine, I will be spinning it back up as a KVM server. I will give oVirt a go for that.
You'll be required to have dual nics.
I'm only using one NIC. I know it works because that test VM in my screenshot was installed via PXE (WDS server)
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@tim_g said in oVirt Testing:
@dustinb3403 said in oVirt Testing:
@jaredbusch said in oVirt Testing:
As soon as my current desktop is migrated to my new machine, I will be spinning it back up as a KVM server. I will give oVirt a go for that.
You'll be required to have dual nics.
I'm only using one NIC. I know it works because that test VM in my screenshot was installed via PXE (WDS server)
Does it? It must be me getting something messed up then . .
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I'm testing oVirt 4.2 beta on a CentOS 7.4, running on an x3300m4 a lot of CPU and ram...what can I say, it's much more complex and much less useful than the standard cli-based toolstack. I've spent almost 8 hours trying make everything works. Now I cannot upload any ISO to the ISO domain, so I can only import templates from the default OpenStack Glance repo, and some of them are broken... or, maybe is the cloud-init implementation?
I hope they will fix it in the stable 4.2. The interface is nice, but for now I stick with plain KVM. -
@francesco-provino said in oVirt Testing:
I'm testing oVirt 4.2 beta on a CentOS 7.4, running on an x3300m4 a lot of CPU and ram...what can I say, it's much more complex and much less useful than the standard cli-based toolstack. I've spent almost 8 hours trying make everything works. Now I cannot upload any ISO to the ISO domain, so I can only import templates from the default OpenStack Glance repo, and some of them are broken... or, maybe is the cloud-init implementation?
I hope they will fix it in the stable 4.2. The interface is nice, but for now I stick with plain KVM.That's odd.
Maybe it's a 4.2 beta issue.
I got mine up and running within 10 minutes of installing CentOS.
- Install CentOS from net install.
- Set up storage and DNS.
- Install oVirt packages from repository.
- Run oVirtEngine install script.
It was really quick and simple.
What did they change in 4.2 to make it so bad?
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@tim_g the interface is much nicer. But, I cannot upload the ISO in the datastore in ANY way. I haven't control over my virsh anymore. To get the CentOS accepted I had to downgrade the cluster level and re-up it after, other that disable completely firewalld and change the cluster default firewalld/iptables config.
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Other than that, the virtual console of the VMs is accesible only with a VNC/spice client, when Cockpit get it right with integrated console.
Maybe there is much of unknowed to me in oVirt, but I find it really a mess compared to KVM.
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I get an auth error when trying to use virsh... even entering the root or oVirt admin credentials does not help.
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@francesco-provino said in oVirt Testing:
I get an auth error when trying to use virsh... even entering the root or oVirt admin credentials does not help.
Of course this is a feature and not a bug, because vsdm holds the daemon... but I hate it. It makes all my libvirt knowledge useless.
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The same is true for SCVMM. You don't install and use SCVMM for a small environment where you only have one hypervisor. It just over complicates things and actually makes simple tasks take longer.
This isn't how you use something like SCVMM or oVIrt.
If you have a single server, just have a couple VMs you want to run on it, and have KVM management skills... I think oVirt may not be the best thing.
If you have multiple servers, need high-availability, will be going through Virtual Machines, need integrated backups, one-touch migrations and checkpoints, templates, virtual networks, and everything else... then yes, oVirt is for you.
oVirt is a virtualization management platform. It requires at least 2 servers (or one if doing self-hosted) just to run it. You wouldn't do this just for a single hypervisor.
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@francesco-provino said in oVirt Testing:
Other than that, the virtual console of the VMs is accesible only with a VNC/spice client, when Cockpit get it right with integrated console.
Maybe there is much of unknowed to me in oVirt, but I find it really a mess compared to KVM.
You can use remote-viewer, VNC, whatever software you want to access VMs.
And even more, in the oVirt web interface (HTML5), you can simply right-click on a VM and click console. You can use spice/vnc/RD from there. Doing the spice options opens up remote-viewer anyways.
You have the same access options as you do with just straight KVM... I'm not sure what you mean here.
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@tim_g said in oVirt Testing:
The same is true for SCVMM. You don't install and use SCVMM for a small environment where you only have one hypervisor. It just over complicates things and actually makes simple tasks take longer.
This isn't how you use something like SCVMM or oVIrt.
If you have a single server, just have a couple VMs you want to run on it, and have KVM management skills... I think oVirt may not be the best thing.
If you have multiple servers, need high-availability, will be going through Virtual Machines, need integrated backups, one-touch migrations and checkpoints, templates, virtual networks, and everything else... then yes, oVirt is for you.
oVirt is a virtualization management platform. It requires at least 2 servers (or one if doing self-hosted) just to run it. You wouldn't do this just for a single hypervisor.
I've two enterprise server with CentOS at the moment, for this home-lab project alone. I understand perfectly the role of oVirt, I'm also a vSphere ops.
And I still find much simple to script anythin in a few lines than to use all this oVirt mess... the template thing can be done easily and without hide VMs under a blob of UUIDs. The same goes for migration and storage HA (gluster, DRBD). Checkpoints AKA... snapshots :D? The OpenvSwitch integration of oVirt is instead a big selling point, I've never got OVS right in plain KVM.
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@tim_g said in oVirt Testing:
@francesco-provino said in oVirt Testing:
Other than that, the virtual console of the VMs is accesible only with a VNC/spice client, when Cockpit get it right with integrated console.
Maybe there is much of unknowed to me in oVirt, but I find it really a mess compared to KVM.
You can use remote-viewer, VNC, whatever software you want to access VMs.
And even more, in the oVirt web interface (HTML5), you can simply right-click on a VM and click console. You can use spice/vnc/RD from there. Doing the spice options opens up remote-viewer anyways.
You have the same access options as you do with just straight KVM... I'm not sure what you mean here.
Not working from the web interface in 4.2, yet.No, I haven't access to virsh anymore, with any user included root. And saslpasswd2 won't help this time.
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@francesco-provino said in oVirt Testing:
@tim_g said in oVirt Testing:
@francesco-provino said in oVirt Testing:
Other than that, the virtual console of the VMs is accesible only with a VNC/spice client, when Cockpit get it right with integrated console.
Maybe there is much of unknowed to me in oVirt, but I find it really a mess compared to KVM.
You can use remote-viewer, VNC, whatever software you want to access VMs.
And even more, in the oVirt web interface (HTML5), you can simply right-click on a VM and click console. You can use spice/vnc/RD from there. Doing the spice options opens up remote-viewer anyways.
You have the same access options as you do with just straight KVM... I'm not sure what you mean here.
Not working from the web interface in 4.2, yet.No, I haven't access to virsh anymore, with any user included root. And saslpasswd2 won't help this time.
Not sure what you mean. Maybe I'm misunderstanding you.... I have no problems at all opening up a console for a virtual console for a VM in any way.
I can view the VM in virt-viewer/remote-viewer, VNC, noVNC, RDP... even launch the console via Cockpit. What else do you need? If you need to edit the configuration the VM, you can do it all through oVirt as easily as you can in straight VMM. Even via Cockpit you can create VMs via templates and other simple things.
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@tim_g said in oVirt Testing:
@francesco-provino said in oVirt Testing:
@tim_g said in oVirt Testing:
@francesco-provino said in oVirt Testing:
Other than that, the virtual console of the VMs is accesible only with a VNC/spice client, when Cockpit get it right with integrated console.
Maybe there is much of unknowed to me in oVirt, but I find it really a mess compared to KVM.
You can use remote-viewer, VNC, whatever software you want to access VMs.
And even more, in the oVirt web interface (HTML5), you can simply right-click on a VM and click console. You can use spice/vnc/RD from there. Doing the spice options opens up remote-viewer anyways.
You have the same access options as you do with just straight KVM... I'm not sure what you mean here.
Not working from the web interface in 4.2, yet.No, I haven't access to virsh anymore, with any user included root. And saslpasswd2 won't help this time.
Not sure what you mean. Maybe I'm misunderstanding you.... I have no problems at all opening up a console for a virtual console for a VM in any way.
I can view the VM in virt-viewer/remote-viewer, VNC, noVNC, RDP... even launch the console via Cockpit. What else do you need? If you need to edit the configuration the VM, you can do it all through oVirt as easily as you can in straight VMM. Even via Cockpit you can create VMs via templates and other simple things.
He's talking about virsh commands.
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@black3dynamite said in oVirt Testing:
@tim_g said in oVirt Testing:
@francesco-provino said in oVirt Testing:
@tim_g said in oVirt Testing:
@francesco-provino said in oVirt Testing:
Other than that, the virtual console of the VMs is accesible only with a VNC/spice client, when Cockpit get it right with integrated console.
Maybe there is much of unknowed to me in oVirt, but I find it really a mess compared to KVM.
You can use remote-viewer, VNC, whatever software you want to access VMs.
And even more, in the oVirt web interface (HTML5), you can simply right-click on a VM and click console. You can use spice/vnc/RD from there. Doing the spice options opens up remote-viewer anyways.
You have the same access options as you do with just straight KVM... I'm not sure what you mean here.
Not working from the web interface in 4.2, yet.No, I haven't access to virsh anymore, with any user included root. And saslpasswd2 won't help this time.
Not sure what you mean. Maybe I'm misunderstanding you.... I have no problems at all opening up a console for a virtual console for a VM in any way.
I can view the VM in virt-viewer/remote-viewer, VNC, noVNC, RDP... even launch the console via Cockpit. What else do you need? If you need to edit the configuration the VM, you can do it all through oVirt as easily as you can in straight VMM. Even via Cockpit you can create VMs via templates and other simple things.
He's talking about virsh commands.
Oh I see, I misunderstood. Makes sense now.
But with oVirt, I don't have any need to run virsh commands... it's all doable through the oVirt GUI.
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@tim_g said in oVirt Testing:
@black3dynamite said in oVirt Testing:
@tim_g said in oVirt Testing:
@francesco-provino said in oVirt Testing:
@tim_g said in oVirt Testing:
@francesco-provino said in oVirt Testing:
Other than that, the virtual console of the VMs is accesible only with a VNC/spice client, when Cockpit get it right with integrated console.
Maybe there is much of unknowed to me in oVirt, but I find it really a mess compared to KVM.
You can use remote-viewer, VNC, whatever software you want to access VMs.
And even more, in the oVirt web interface (HTML5), you can simply right-click on a VM and click console. You can use spice/vnc/RD from there. Doing the spice options opens up remote-viewer anyways.
You have the same access options as you do with just straight KVM... I'm not sure what you mean here.
Not working from the web interface in 4.2, yet.No, I haven't access to virsh anymore, with any user included root. And saslpasswd2 won't help this time.
Not sure what you mean. Maybe I'm misunderstanding you.... I have no problems at all opening up a console for a virtual console for a VM in any way.
I can view the VM in virt-viewer/remote-viewer, VNC, noVNC, RDP... even launch the console via Cockpit. What else do you need? If you need to edit the configuration the VM, you can do it all through oVirt as easily as you can in straight VMM. Even via Cockpit you can create VMs via templates and other simple things.
He's talking about virsh commands.
Oh I see, I misunderstood. Makes sense now.
But with oVirt, I don't have any need to run virsh commands... it's all doable through the oVirt GUI.
Everything? Maybe you are talking about a very tiny and non-production environment now… you are missing the best part, scripting and automation!
How can you possibly manage without automation
an environment of 50+ VMs without babysitting everyday?For instance, in one of my KVM environment I’ve done a tiny script that 1) check the uuid and automatic mount an external esata HDD inside a VM 2) trigger the borg backup script 3) cleanly unmount the disk and email the operator when the task is finished. It tooks half an hour write and ha saved a lot of time in the last 4 years. (Ok, I know the esata hdd is not the best backup target, but it’s the third-offsite one and there are five of that)
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@francesco-provino said in oVirt Testing:
@tim_g said in oVirt Testing:
@black3dynamite said in oVirt Testing:
@tim_g said in oVirt Testing:
@francesco-provino said in oVirt Testing:
@tim_g said in oVirt Testing:
@francesco-provino said in oVirt Testing:
Other than that, the virtual console of the VMs is accesible only with a VNC/spice client, when Cockpit get it right with integrated console.
Maybe there is much of unknowed to me in oVirt, but I find it really a mess compared to KVM.
You can use remote-viewer, VNC, whatever software you want to access VMs.
And even more, in the oVirt web interface (HTML5), you can simply right-click on a VM and click console. You can use spice/vnc/RD from there. Doing the spice options opens up remote-viewer anyways.
You have the same access options as you do with just straight KVM... I'm not sure what you mean here.
Not working from the web interface in 4.2, yet.No, I haven't access to virsh anymore, with any user included root. And saslpasswd2 won't help this time.
Not sure what you mean. Maybe I'm misunderstanding you.... I have no problems at all opening up a console for a virtual console for a VM in any way.
I can view the VM in virt-viewer/remote-viewer, VNC, noVNC, RDP... even launch the console via Cockpit. What else do you need? If you need to edit the configuration the VM, you can do it all through oVirt as easily as you can in straight VMM. Even via Cockpit you can create VMs via templates and other simple things.
He's talking about virsh commands.
Oh I see, I misunderstood. Makes sense now.
But with oVirt, I don't have any need to run virsh commands... it's all doable through the oVirt GUI.
Everything? Maybe you are talking about a very tiny and non-production environment now… you are missing the best part, scripting and automation!
How can you possibly manage without automation
an environment of 50+ VMs without babysitting everyday?For instance, in one of my KVM environment I’ve done a tiny script that 1) check the uuid and automatic mount an external esata HDD inside a VM 2) trigger the borg backup script 3) cleanly unmount the disk and email the operator when the task is finished. It tooks half an hour write and ha saved a lot of time in the last 4 years. (Ok, I know the esata hdd is not the best backup target, but it’s the third-offsite one and there are five of that)
I suppose it depends on the environment. I don't have 50+ VMs running in KVM. I have one production level KVM hypervisor only running a handful. Backups automated in ReaR to an NFS file share, which goes to tape. Updates via dnf-automatic. I guess I don't really have many virsh-CLI automation needs for KVM. I can't really see needing anything at the hypervisor level beyond updates and backups... but I don't need virsh CLI to do that.
All the other hypervisors are Hyper-V Server totalling around 60-70 VMs. Everything there is automated via PowerShell scripts, Group Policy, and Scheduled Tasks. Linux VMs via SaltStack and GitLab.
