Step 1.) Install virt-manager
sudo apt install virt-manager
Step 2.) Start libvirtd
sudo systemctl start libvirtd
sudo systemctl enable libvirtd
Step 3.) Permissions
Your user needs access to libvirt and kvm or it won't work without running as sudo.
sudo usermod -a -G kvm yourusername
sudo usermond -a -G libvirt yourusername........
If you get an error that you aren't in the sudoers file, this typically means that your user is not designated as an admin with sudo privileges.
In plain English, when it comes to some OS's like Debian including 10,11 etc.., by default the user is created without special privileges which is contrary to how Ubuntu/Mint handle the secondary user.
Let's check the sudoers file to see the problem.........
sudo usermod -a -G groupname username
It's really simple like above, the -a is for append so that you are not changing their main group, but adding them to another additonal group. Just change "groupname" to your group and "username" to the user you want to be added to "groupname".
A common task these days is getting your user access to kvm for virtualization so the KVM/QEMUprocess........
The strange thing is that usually the first install or two will work on any new machine but then it suddenly won't. I had this experience on QEMU 2.13 on a different machine. There is something finicky or buggy about the CUCM installer even when choosing the same virtual hardware specs.
qemu-kvm command:
/usr/libexec/qemu-kvm -version
QEMU PC emulator version 0.12.1 (qemu-kvm-0.12.1.2-2.506.el6_10.1), Copyright (c) 2003-2008 Fabrice Bellard
........
First of all I got this error after accidentally messing up my usergroup by using usermod -G user group
When I would login using SSHkeys it would fail:
sshd[2020]: Authentication refused: bad ownership or modes for directory /home/one
No worries, the fix is simple!
chmod g-w /home/use........
Essentially a program I was running for mining did not terminate properly with Ctrl+C it is listed as defunct and cannot be killed, kernel is tainted and normal tricks to disable the port are impossible the dev and sys entries for the device cannot be browsed or interacted with in any form without a lockup of the request. The only solution is to reboot due to the kernel taint as far as I can find so far.
[1130246.811056] INFO: task minerd:21861 blocked for more th........
yum exits in the middle
The problem is this VPS seems to be an OpenVZ template from HyperVM. The only way to make it work was to disable i386 packages since this was an x64 kernel. That shouldn't be necessary but it was the only way to make yum stop quitting after the first package or two. I couldn't find any issue by checking the logs either.
echo y|yum install vim-minimal telnet expect jwhois net-tools slocate iptables elinks gawk
L........