Management Tools2015/06/02 |
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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 fedora22 /root total 40 dr-xr-x---. 3 root root 4096 Dec 25 11:46 . dr-xr-xr-x. 18 root root 4096 Dec 25 11:55 .. -rw-------. 1 root root 126 Dec 25 11:46 .bash_history -rw-r--r--. 1 root root 18 Jun 8 2014 .bash_logout -rw-r--r--. 1 root root 176 Jun 8 2014 .bash_profile -rw-r--r--. 1 root root 176 Jun 8 2014 .bashrc -rw-r--r--. 1 root root 100 Jun 8 2014 .cshrc ... |
| [3] | "cat" a file in a virtual machine. |
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[root@dlp ~]# virt-cat -d fedora22 /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 ... |
| [4] | Edit a file in a virtual machine. |
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[root@dlp ~]# virt-edit -d fedora22 /etc/fstab # # /etc/fstab # Created by anaconda on Thu Dec 25 11:30:32 2014 # # 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--server-root / ext4 defaults 1 1 UUID=fb39d12e-e1f0-4114-a2fd-76eadc99ccdb /boot ext4 defaults 1 2 /dev/mapper/fedora--server-swap swap swap defaults 0 0 |
| [5] | Display disk usage in a virtual machine. |
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[root@dlp ~]# virt-df -d fedora22 Filesystem 1K-blocks Used Available Use% fedora22:/dev/sda1 487652 91879 366077 19% fedora22:/dev/fedora-server/root 27187420 1268684 24514628 5% |
| [6] | Mount a disk for a virtual machine. |
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[root@dlp ~]# guestmount -d fedora22 -i /media [root@dlp ~]# ll /media total 82 lrwxrwxrwx. 1 root root 7 Aug 16 22:24 bin -> usr/bin dr-xr-xr-x. 4 root root 1024 Dec 25 20:40 boot drwxr-xr-x. 2 root root 4096 Dec 25 20:30 dev drwxr-xr-x. 103 root root 12288 Dec 25 20:55 etc ... |
| [7] | Display the status of virtual machines. |
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[root@dlp ~]# virt-top
virt-top 22:12:33 - x86_64 4/4CPU 2801MHz 12135MB
3 domains, 1 active, 1 running, 0 sleeping, 0 paused, 2 inactive D:0 O:0 X:0
CPU: 42.2% Mem: 4096 MB (4096 MB by guests)
ID S RDRQ WRRQ RXBY TXBY %CPU %MEM TIME NAME
9 R 92 220 0 0 42.2 33.0 6:59.26 win2k12
- (fedora22)
- (template)
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