KVM常用操作命令

xiaoxiao2025-05-15  32

查看虚拟机 $ virsh list --all Id Name State ---------------------------------------------------- - userver shut off - win7 shut off 显示虚拟机信息 $ virsh dominfo userver Id: - Name: userver UUID: 2677045a-35a2-4730-99f7-ec8ed2a453da OS Type: hvm State: shut off CPU(s): 2 Max memory: 2097152 KiB Used memory: 2097152 KiB Persistent: yes Autostart: disable Managed save: no Security model: apparmor Security DOI: 0 启动虚拟机 $ virsh start userver Domain userver started

显示虚拟机内存和CUP

$ virt-top virt-top 09:39:42 - x86_64 4/4CPU 2537MHz 7899MB 0.2% 0.2% 0.1% 0.1% 2 domains, 1 active, 1 running, 0 sleeping, 0 paused, 1 inactive D:0 O:0 X:0 CPU: 0.1% Mem: 2048 MB (2048 MB by guests)

显示虚拟机分区信息

$ sudo virt-df userver Filesystem 1K-blocks Used Available Use% userver:/dev/sda2 102684600 4446164 92979328 5%

设置虚拟机开机启动

$ virsh autostart userver

关闭开机启动

$ virsh autostart --disable userver

关闭虚拟机

$ virsh shutdown userver

删除虚拟机

$ virsh undefine userver

通过控制窗口登录虚拟机

$ virsh console userver

更改虚拟机参数

#查看当前内容 $ eric@ray:~ $ virsh dominfo userver | grep memory Max memory: 2097152 KiB Used memory: 2097152 KiB #动态设置内存 512MB 单位必须是KB eric@ray:~ $ virsh setmem userver 524288 #查看内存变化 eric@ray:~ $ virsh dominfo userver | grep memory Max memory: 14194304 KiB Used memory: 524288 kiB #增加内存 eric@ray:~ $ virsh shutdown userver $ virsh edit userver #直接更改内存 $ virsh create /etc/libvirt/demu/userver/xml

删除虚拟机

# 停止虚拟机 $ virsh shutdown userver $ virsh destroy userver $ virsh undefine userver # 删除硬盘 不建议操作 $ rm /dev/vg_userver/userver
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