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Management tools
2015/05/12 |
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Install useful tools for virtual machine management.
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| [1] | Install tools. |
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root@dlp:~# apt-get -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 ubuntu /root total 20 drwx------ 2 0 0 4096 May 7 10:22 . drwxr-xr-x 22 0 0 4096 May 7 10:15 .. -rw------- 1 0 0 153 May 7 11:44 .bash_history -rw-r--r-- 1 0 0 570 Jan 31 2010 .bashrc -rw-r--r-- 1 0 0 140 Nov 19 2007 .profile |
| [3] | "cat" a file in a virtual machine |
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root@dlp:~# virt-cat -d ubuntu /etc/passwd root:x:0:0:root:/root:/bin/bash daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin bin:x:2:2:bin:/bin:/usr/sbin/nologin sys:x:3:3:sys:/dev:/usr/sbin/nologin sync:x:4:65534:sync:/bin:/bin/sync ... ... |
| [4] | Edit a file in a virtual machine |
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root@dlp:~# virt-edit -d ubuntu /etc/fstab # /etc/fstab: static file system information. # # Use 'blkid' to print the universally unique identifier for a # device; this may be used with UUID= as a more robust way to name devices # that works even if disks are added and removed. See fstab(5). # # <file system> <mount point> <type> <options> <dump> <pass> /dev/mapper/debian--vg-root / ext4 errors=remount-ro 0 1 # /boot was on /dev/vda1 during installation UUID=82c9915f-4b67-46cc-ac63-c6dd4d7662d1 /boot ext2 defaults 0 2 /dev/mapper/debian--vg-swap_1 none swap sw 0 0 |
| [5] | Display disk usage in a virtual machine |
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root@dlp:~# virt-df -d ubuntu Filesystem 1K-blocks Used Available Use% ubuntu:/dev/sda1 240972 33211 195320 14% ubuntu:/dev/debian-vg/root 29284444 958140 26815700 4% |
| [6] | Mount a disk for a virtual machine |
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root@dlp:~# guestmount -d ubuntu -i /mnt root@dlp:~# ll /mnt total 89 drwxr-xr-x 2 root root 4096 May 7 19:19 bin drwxr-xr-x 4 root root 1024 May 7 19:20 boot drwxr-xr-x 4 root root 4096 May 7 19:13 dev drwxr-xr-x 83 root root 4096 May 7 19:24 etc drwxr-xr-x 3 root root 4096 May 7 19:20 home ... ... |
| [7] | Display the status of virtual machines |
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root@dlp:~# virt-top
virt-top 21:58:43 - x86_64 4/4CPU 2801MHz 12158MB
3 domains, 1 active, 1 running, 0 sleeping, 0 paused, 2 inactive D:0 O:0 X:0
CPU: 0.0% Mem: 4096 MB (4096 MB by guests)
ID S RDRQ WRRQ RXBY TXBY %CPU %MEM TIME NAME
6 R 0.0 0.0 0:04.92 ubuntu
- (template)
- (win2k12R2)
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