KVM : Management Tools2018/05/15 |
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Install useful tools for virtual machine management.
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| [1] | Install required packages. |
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[root@dlp ~]# dnf -y install libguestfs-tools virt-top
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| [2] | [ls] a directory in a virtual machine. |
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[root@dlp ~]# virt-ls -l -d fedora28 /root total 28 dr-xr-x---. 2 root root 135 Dec 21 02:57 . dr-xr-xr-x. 17 root root 224 Dec 21 02:43 .. -rw-------. 1 root root 16 Dec 21 02:57 .bash_history -rw-r--r--. 1 root root 18 Jul 28 22:22 .bash_logout -rw-r--r--. 1 root root 176 Jul 28 22:22 .bash_profile -rw-r--r--. 1 root root 176 Jul 28 22:22 .bashrc ... |
| [3] | [cat] a file in a virtual machine. |
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[root@dlp ~]# virt-cat -d fedora28 /etc/passwd root:x:0:0:root:/root:/bin/bash bin:x:1:1:bin:/bin:/sbin/nologin daemon:x:2:2:daemon:/sbin:/sbin/nologin adm:x:3:4:adm:/var/adm:/sbin/nologin lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin sync:x:5:0:sync:/sbin:/bin/sync shutdown:x:6:0:shutdown:/sbin:/sbin/shutdown halt:x:7:0:halt:/sbin:/sbin/halt ... |
| [4] | Edit a file in a virtual machine. |
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[root@dlp ~]# virt-edit -d fedora28 /etc/fstab # # /etc/fstab # Created by anaconda on Thu Dec 21 02:42:14 2017 # # Accessible filesystems, by reference, are maintained under '/dev/disk' # See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info # /dev/mapper/fedora-root / xfs defaults 0 0 UUID=3efa9577-8c2c-45d3-8718-4ab4651392db /boot ext4 defaults 1 2 /dev/mapper/fedora-swap swap swap defaults 0 0 |
| [5] | Display disk usage in a virtual machine. |
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[root@dlp ~]# virt-df -d fedora28 Filesystem 1K-blocks Used Available Use% fedora28:/dev/sda1 999320 118992 811516 12% fedora28:/dev/fedora/root 15718400 1205444 14512956 8% |
| [6] | Mount a disk for a virtual machine. |
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[root@dlp ~]# guestmount -d fedora28 -i /media [root@dlp ~]# ll /media total 20 lrwxrwxrwx. 1 root root 7 Aug 3 08:32 bin -> usr/bin dr-xr-xr-x. 6 root root 4096 Dec 21 11:49 boot drwxr-xr-x. 2 root root 6 Dec 21 11:42 dev drwxr-xr-x. 93 root root 8192 Dec 21 11:57 etc drwxr-xr-x. 3 root root 20 Dec 21 11:51 home ... |
| [7] | Display the status of virtual machines. |
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[root@dlp ~]# virt-top
virt-top 10:24:32 - x86_64 6/6CPU 2593MHz 7983MB
2 domains, 1 active, 1 running, 0 sleeping, 0 paused, 1 inactive D:0 O:0 X:0
CPU: 0.0% Mem: 500 MB (500 MB by guests)
ID S RDRQ WRRQ RXBY TXBY %CPU %MEM TIME NAME
- (Win2k16)
- (fedora28)
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