proxmox
Boot order
To change boot order press ESC at boot PROXMOX LOGO
Commands
# stop all machines (that tries to shutdown first)
qm stopall
# list all machines
qm list
# shutdown machine
qm shutdown <id>
Backup and restore
# backup
vzdump 103 --dumpdir /home/user/backup -tmpdir /root/
# restore
qmrestore vzdump-qemu-019-2018_10_14-15_13_31.vma 501