KVM on Fedora 26 Server edition
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- I installed a Fedora 26 installation, choosing only "Headless virtualization" as the install option.
- I installed a Fedora Workstation VM on my PC so I can create VMs, and see the VM Console via a simple GUI (virt-manager).
- Virt-Manager looks straight forward, just like any other Hyper-visor management GUI.
However, I'm running into issues with getting connected. I'm getting the feeling that i missed a step, but can't find a good guide to check against. When making a new connection in Virt-Manager, I specify QEMU/KVM as the Hypervisor, SSH as the method, username root, and then the hostname (IP). When I connect, I immediately get the error:
Virtual machine manager connection failure" Unable to connect to libvirt You need to install openssh-askpass or similar to connect to this host."This message seems pretty specific, like I missed something during the setup process. Can anyone outline the procedure to fix this?
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@fuznutz04 said in KVM on Fedora 26 Server edition:
openssh-askpass
try : sudo yum install openssh-askpass
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@fuznutz04 said in KVM on Fedora 26 Server edition:
openssh-askpass
Try this
dnf install -y openssh-askpass -
OK, we're getting there. I can now connect, however, virt-manager is asking me for my password about 10 times. After entering it over and over, I am now in and am able to do some tasks. Let's see how it goes.
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Oh yeah, that is super annoying. Anytime i want to do anything, I am prompted for a password about 8 times.
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@fuznutz04 said in KVM on Fedora 26 Server edition:
Oh yeah, that is super annoying. Anytime i want to do anything, I am prompted for a password about 8 times.
You can set up key based authentication and that problem goes away...
ssh-copy-id user@kvmserverwill stop it from asking for your password every time. You just have to put your user into the livbirt group on the KVM server.
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@fuznutz04 said in KVM on Fedora 26 Server edition:
Oh yeah, that is super annoying. Anytime i want to do anything, I am prompted for a password about 8 times.
You also need to make sure your user is in the libvirt group on the KVM server side.
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Awesome. I'm out at the moment but will do this and report back.
Thanks!
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@dafyre said in KVM on Fedora 26 Server edition:
@fuznutz04 said in KVM on Fedora 26 Server edition:
Oh yeah, that is super annoying. Anytime i want to do anything, I am prompted for a password about 8 times.
You can set up key based authentication and that problem goes away...
ssh-copy-id user@kvmserverwill stop it from asking for your password every time. You just have to put your user into the livbirt group on the KVM server.
I cannot upvote this enough.
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I'll be doing this shortly (as a test against Hyper-V) so I'll be following this thread.
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OMG, that is so much better. Thank you. Now your comment from earlier this week @EddieJennings makes perfect sense.
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@fuznutz04 said in KVM on Fedora 26 Server edition:
OMG, that is so much better. Thank you. Now your comment from earlier this week @EddieJennings makes perfect sense.
In case you don't have a key generated yet...
https://mangolassi.it/topic/9862/generating-an-ssh-key-in-linux
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@fuznutz04 said in KVM on Fedora 26 Server edition:
OMG, that is so much better. Thank you. Now your comment from earlier this week @EddieJennings makes perfect sense.
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This is bizarre. I just set up a Plex VM on KVM. If I pump a lot of traffic to the VM (like copying movies to it), the VM will go into a paused state.
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@fuznutz04 said in KVM on Fedora 26 Server edition:
This is bizarre. I just set up a Plex VM on KVM. If I pump a lot of traffic to the VM (like copying movies to it), the VM will go into a paused state.
Check the SAR report to see what the wait states are like.
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@scottalanmiller said in KVM on Fedora 26 Server edition:
@fuznutz04 said in KVM on Fedora 26 Server edition:
This is bizarre. I just set up a Plex VM on KVM. If I pump a lot of traffic to the VM (like copying movies to it), the VM will go into a paused state.
Check the SAR report to see what the wait states are like.
Sigh... no need. I know why. I am out of space on the host drive. Stupid mistake.
How would you suggest the partition layout for the HyperVisor? I have 4.5 TB of space once the array is setup. Obviously, I'll be using LVM here.
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One small volume for the hypervisor, maybe 12GB. Everything else in one big volume.
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@scottalanmiller said in KVM on Fedora 26 Server edition:
One small volume for the hypervisor, maybe 12GB. Everything else in one big volume.
Yeah, so not the "Automatic partition" defaults on the standard installation....
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@fuznutz04 said in KVM on Fedora 26 Server edition:
@scottalanmiller said in KVM on Fedora 26 Server edition:
One small volume for the hypervisor, maybe 12GB. Everything else in one big volume.
Yeah, so not the "Automatic partition" defaults on the standard installation....
Not normally, no.
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@scottalanmiller Like so?
