kvm

KVM虚拟机管理

前提是你 提交于 2020-01-02 14:10:14
#定义新的存储池 virsh pool-define-as spool4lj dir - - - - "/home/lj/spool4lj" virsh pool-build spool4lj # 创建池子 virsh pool-list --all # 查看池子列表 virsh pool-start spool4lj # 开启池子 virsh pool-autostart spool4lj #设置池子开机启动 virsh pool-autostart spool4lj #查看新创建的池子的信息 //配置存储卷/磁盘映像 qemu-img create -f raw ./spool4lj/aps4lj.img 60G #创建img镜像(raw是镜像的格式) qemu-img info ./spool4lj/aps4lj.img #查看img文件的信息 //第三步: 创建虚拟机 virt-install --name=aps4lj --ram 8172 --vcpus=4 \ --disk path=/home/lj/spool4lj/aps4lj.img,size=7,bus=virtio \ --accelerate --cdrom /home/lj/CentOS-7-x86_64-Minimal-1503-01.iso \ --vnc --vncport=5910 -

KVM虚拟机配置

最后都变了- 提交于 2020-01-02 14:09:53
KVM 全称是 Kernel-Based Virtual Machine。也就是说 KVM 是基于 Linux 内核实现的,KVM有一个内核模块叫 kvm.ko,只用于管理虚拟 CPU 和内存。 在 x86 平台上最热门运用最广泛的虚拟化方案莫过于 KVM 了。其中云计算框架 OpenStack 对 KVM 支持得也最好,我们的教程也理所当然选择 KVM 作为 实验环境的 Hypervisor。 ◆安装KVM虚拟机◆ 1.配置宿主机为网桥 cd /etc/sysconfig/network-scripts cp -a ifcfg-eno16777728 ifcfg-br0 vim ifcfg-br0 TYPE=Bridge DEVICE=br0 BOOTPROTO=static ONBOOT=yes IPADDR=192.168.1.13 NETMASK=255.255.255.0 GATEWAY=192.168.1.1 DNS1=8.8.8.8 DNS2=114.114.114.114 reboot 2.宿主机的软件安装和配置 yum install -y qemu-kvm libvirt virt-install bridge-utils 3.安装完毕之后,检查模块是否已经加载 lsmod | grep kvm 4.执行下列命令开启虚拟机 systemctl start

[qemu][kvm] 在一个vmware虚拟机里安装qemu-kvm虚拟机

99封情书 提交于 2020-01-02 14:09:25
说起来这个需求,简直是傻傻的。但却实实在在的摆在我的面前。。。。 VM无外乎就是为了模拟场景:我现在要的场景就是一台很多个core的linux主机。但是我只有一个装了windows的笔记本。上边有一个VMware,而VMware又不能模拟超过hostCPU个数的guestCPU数。 所以,用KVM在VMware里模拟一下。 CentOS 安装 qemu: [root@D128 VM]# yum install qemu qemu-kvm 首先,默认情况下,vmware没有开启虚拟化支持。在guest里运行kvm会报错: [root@D128 j]# ./start.sh (process:2651): GLib-WARNING **: gmem.c:483: custom memory allocation vtable not supported Could not access KVM kernel module: No such file or directory failed to initialize KVM: No such file or directory 可以在VMware的软件外部设置里,开启虚拟化支持,如图: 最后,晒一下我的启动脚本: [root@D128 j]# cat start.sh qemu-system-x86_64 -enable-kvm \

kvm硬件扩容

白昼怎懂夜的黑 提交于 2020-01-02 08:05:34
1. 硬盘扩容 qcow2格式磁盘,直接通过qemu-img 直接扩展qcow2磁盘, 新添加一块qcow2 格式的磁盘加入到KVM虚拟机,然后通过虚拟机系统lvm逻辑卷管理方式进行管理,扩展磁盘空间。 添加一块 qcow2磁盘 [root@yangrz01 isos]# qemu-img create -f qcow2 test01_add.qcow2 2G Formatting 'test01_add.qcow2', fmt=qcow2 size=2147483648 encryption=off cluster_size=65536 添加一块 qcow2磁盘信息加入配置文件 <devices> <emulator>/usr/libexec/qemu-kvm</emulator> <disk type='file' device='disk'> <driver name='qemu' type='qcow2' cache='none'/> <source file='/home/work/isos/test2.img'/> <target dev='vda' bus='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </disk> <disk type=

Difference between trap flag (TF) and monitor trap flag?

99封情书 提交于 2020-01-02 04:34:09
问题 Debugging features like GDB work by setting the TF flag of eflags register which causes an exception after every execution of instruction by the processor, letting tools like gdb control over the debugging.When we are running a virtual machine Ex in case of kvm to do the same thing you need to set a flag called the MONITOR TRAP FLAG (pg 15 of current intel software manual 3c), which will cause the virtual macine to EXIT (VMEXIT) after every instruction giving debugging abitily to the

KVM 虚拟机的热迁移

有些话、适合烂在心里 提交于 2020-01-01 13:21:48
热迁移:顾名思义在虚拟机不关机的情况下将KVM虚拟机进行迁移 准备工作:两台KVM虚拟机,一台nfs虚拟机,centos7.4系统 主机 IP地址 主机名 KVM01 10.00.11 kvm01 KVM02 10.0.0.12 kvm02 NFS01 10.0.0.31 nfs01 安装:  所有主机进行的相同操作   安装centos7 base源      curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo   修改hosts文件      10.0.0.11 kvm01     10.0.0.12 kvm02     10.0.0.31 nfs01   KVM01与KMV02操作     开机前开启虚拟化功能【否则后面步骤无法实现】     安装kvm与nfs软件并启动     yum install libvirt* virt-* qemu-kvm* nfs-utils openssh-askpass -y && systemctl libvirtd.service     常见bro桥接网卡     virsh iface-bridge eth0 br0   NFS01操作     安装NFS软件     yum install nfs-utils

qemu KVM kernel module no such file or directory

余生颓废 提交于 2020-01-01 09:03:13
问题 I am currently taking an operating systems class and I need to use qemu to run a small operating system that my professor provided. I am trying to use qemu within an ubuntu 12.04 virtual machine on virtualbox on my macbook air 5.2. I know the problems I am having probably have to do with nested virtualization but the specific error I get when I try to run qemu is: Could not access the KVM kernel module: No such file or directory failed to initialize KVM: no such file or directory Back to tcg

qemu KVM kernel module no such file or directory

南楼画角 提交于 2020-01-01 09:03:08
问题 I am currently taking an operating systems class and I need to use qemu to run a small operating system that my professor provided. I am trying to use qemu within an ubuntu 12.04 virtual machine on virtualbox on my macbook air 5.2. I know the problems I am having probably have to do with nested virtualization but the specific error I get when I try to run qemu is: Could not access the KVM kernel module: No such file or directory failed to initialize KVM: no such file or directory Back to tcg

qemu KVM kernel module no such file or directory

寵の児 提交于 2020-01-01 09:02:14
问题 I am currently taking an operating systems class and I need to use qemu to run a small operating system that my professor provided. I am trying to use qemu within an ubuntu 12.04 virtual machine on virtualbox on my macbook air 5.2. I know the problems I am having probably have to do with nested virtualization but the specific error I get when I try to run qemu is: Could not access the KVM kernel module: No such file or directory failed to initialize KVM: no such file or directory Back to tcg

Android Studio 2.3 using emulator from console, “/dev/kvm device: permission denied” for root user

我与影子孤独终老i 提交于 2019-12-31 13:13:16
问题 I'm trying to start a virtual android device which I created with the avdmanager of Android Studio 2.3 (via command line) all commands are performed as root user when i try to start the emulator via $ ~/Android/Sdk/tools/./emulator @Nexus_5X_Api_23_x86 the output is: emulator: ERROR: x86_64 emulation currently requires hardware acceleration! Please ensure KVM is properly installed and usable. CPU acceleration status: This user doesn't have permissions to use KVM (/dev/kvm) I'm using an Ubuntu