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Management Tools
2015/11/22 |
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Install useful tools for virtual machine management.
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| [1] | Install required packages. |
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dlp:~ # zypper -n install guestfs-tools libguestfs0 virt-top
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| [2] | "ls" a directory in a virtual machine. |
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dlp:~ # virt-ls -l -d sles12 /root total 32 drwx------ 1 root root 96 Nov 22 14:18 . drwxr-xr-x 1 root root 156 Nov 22 14:09 .. -rw------- 1 root root 28 Nov 22 14:20 .bash_history drwx------ 1 root root 90 Nov 22 14:14 .gnupg drwxr-xr-x 1 root root 10 Nov 22 14:18 .local -rw-r--r-- 1 root root 28098 Nov 22 14:16 autoinst.xml drwxr-xr-x 1 root root 0 Sep 21 2014 bin drwxr-xr-x 1 root root 36 Nov 22 14:04 inst-sys ... |
| [3] | "cat" a file in a virtual machine. |
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dlp:~ # virt-cat -d sles12 /etc/passwd at:x:25:25:Batch jobs daemon:/var/spool/atjobs:/bin/bash bin:x:1:1:bin:/bin:/bin/bash daemon:x:2:2:Daemon:/sbin:/bin/bash ftp:x:40:49:FTP account:/srv/ftp:/bin/bash ftpsecure:x:489:65534:Secure FTP User:/var/lib/empty:/bin/false ... |
| [4] | Edit a file in a virtual machine. |
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dlp:~ # virt-edit -d sles12 /etc/fstab UUID=57347ebf-bc40-4490-85be-f91ca6cce3a4 swap swap defaults 0 0 UUID=e9c233a4-50f7-498d-a996-1ff05a2e3512 / btrfs defaults 0 0 UUID=e9c233a4-50f7-498d-a996-1ff05a2e3512 /boot/grub2/i386-pc btrfs subvol=@/boot/grub2/i386-pc 0 0 UUID=e9c233a4-50f7-498d-a996-1ff05a2e3512 /boot/grub2/x86_64-efi btrfs subvol=@/boot/grub2/x86_64-efi 0 0 UUID=e9c233a4-50f7-498d-a996-1ff05a2e3512 /opt btrfs subvol=@/opt 0 0 UUID=e9c233a4-50f7-498d-a996-1ff05a2e3512 /srv btrfs subvol=@/srv 0 0 UUID=e9c233a4-50f7-498d-a996-1ff05a2e3512 /tmp btrfs subvol=@/tmp 0 0 ..... ..... |
| [5] | Display disk usage in a virtual machine. |
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dlp:~ # virt-df -d sles12
Filesystem 1K-blocks Used Available Use%
sles12:btrfsvol:/dev/sda2/@/boot/grub2/i386-pc
12587008 3158536 7782872 26%
sles12:btrfsvol:/dev/sda2/@/boot/grub2/x86_64-efi
12587008 3158536 7782872 26%
sles12:btrfsvol:/dev/sda2/@/opt 12587008 3158536 7782872 26%
sles12:btrfsvol:/dev/sda2/@/srv 12587008 3158536 7782872 26%
.....
.....
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| [6] | Mount a disk for a virtual machine. |
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dlp:~ # guestmount -d sles12 -i /mnt dlp:~ # ll /mnt total 0 drwxr-x--- 1 root root 34 Nov 22 23:17 .snapshots drwxr-xr-x 1 root root 1810 Nov 22 23:14 bin drwxr-xr-x 1 root root 584 Nov 22 23:18 boot drwxr-xr-x 1 root root 0 Nov 22 23:09 dev drwxr-xr-x 1 root root 5204 Nov 22 23:20 etc drwxr-xr-x 3 root root 18 Nov 22 23:17 home ..... ..... |
| [7] | Display the status of virtual machines. |
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dlp:~ # virt-top
virt-top 01:33:58 - x86_64 4/4CPU 2801MHz 12038MB
2 domains, 0 active, 0 running, 0 sleeping, 0 paused, 2 inactive D:0 O:0 X:0
CPU: 0.0% Mem: 0 MB (0 MB by guests)
ID S RDRQ WRRQ RXBY TXBY %CPU %MEM TIME NAME
- (sles12)
- (template)
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