随笔分类 -  virtualization

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用OpenStack界面轻松创建虚拟机的你，看得懂虚拟机启动的这24个参数么？
摘要：看这篇文章之前，保证看过以下文章： 我是虚拟机内核我困惑？！ Qemu，KVM，Virsh傻傻的分不清 裸用KVM创建虚拟机，体验virtualbox为你做的10件事情 大家从OpenStack页面上，轻松一点就创建了一个虚拟机，但是当你登陆到一台物理机上ps查看的时候，却发现参数复杂之极。 qem 阅读全文
posted @ 2018-03-08 15:29 popsuper1982 阅读(3150) 评论(0) 推荐(1) 编辑
Qemu，KVM，Virsh傻傻的分不清
摘要：当你安装了一台Linux，想启动一个KVM虚拟机的时候，你会发现需要安装不同的软件，启动虚拟机的时候，有多种方法： virsh start kvm命令 qemu命令 qemu-kvm命令 qemu-system-x86_64命令 virsh start kvm命令 qemu命令 qemu-kvm命令 阅读全文
posted @ 2018-03-07 15:09 popsuper1982 阅读(4966) 评论(0) 推荐(4) 编辑
我是虚拟机内核我困惑？！
摘要：内核，是指的操作系统内核。 所有的操作系统都有内核，无论是Windows还是Linux，都管理着三个重要的资源：计算，网络，存储。 计算指CPU和内存，网络即网络设备，存储即硬盘之类的。 内核是个大管家，想象你的机器上跑着很多的程序，有word，有excel，看着视频，听着音乐，每个程序都要使用CP 阅读全文
posted @ 2018-03-06 20:23 popsuper1982 阅读(1573) 评论(1) 推荐(7) 编辑
干货分享: 长达250页的Libvirt Qemu KVM的ppt，不实验无真相
摘要：下载地址：Libvirt Qemu KVM 教程大全http://files.cnblogs.com/popsuper1982/LibvirtQemuKVM.pptx1. 概论1.1 虚拟化的基本类型无虚拟化半虚拟化Paravirtualization非硬件辅助全虚拟化硬件辅助全虚拟化实验一：查看系... 阅读全文
posted @ 2014-10-28 10:20 popsuper1982 阅读(10550) 评论(1) 推荐(4) 编辑
QEMU KVM Libvirt(12): Live Migration
摘要：由于KVM的架构为 Libvirt –> qemu –> KVM 所以对于live migration有两种方式，一种是qemu + KVM自己的方式，一种是libvirt的方式，当然libvirt也是基于qemu+kvm的方式 qemu + KVM自己的方式为使用monitor KVM Migration KVM currently supports savevm/loadvm and offl... 阅读全文
posted @ 2014-07-17 19:52 popsuper1982 阅读(4711) 评论(0) 推荐(0) 编辑
QEMU KVM Libvirt手册(11): Managing Storage
摘要：When managing a VM Guest on the VM Host Server itself, it is possible to access the complete file system of the VM Host Server in order to attach or create virtual hard disks or to attach existing ima... 阅读全文
posted @ 2014-07-16 15:58 popsuper1982 阅读(2121) 评论(0) 推荐(0) 编辑
Provisioning KVM virtual machines on iSCSI the hard way
摘要：https://www.berrange.com/posts/2010/05/05/provisioning-kvm-virtual-machines-on-iscsi-the-hard-way-part-1-of-2/The previous articles showed how to prov... 阅读全文
posted @ 2014-07-15 19:21 popsuper1982 阅读(857) 评论(0) 推荐(0) 编辑
Virtio
摘要：VirtioSo-called "full virtualization" is a nice feature because it allows you to run any operating system virtualized. However, it's slow because the ... 阅读全文
posted @ 2014-07-15 19:17 popsuper1982 阅读(894) 评论(0) 推荐(0) 编辑
Setting up libvirt for TLS (Encryption & Authentication)
摘要：Setting up libvirt for TLS (Encryption & Authentication)Setting up your virtualisation infrastructure for Transport Layer Security (TLS) isn't very di... 阅读全文
posted @ 2014-07-15 19:16 popsuper1982 阅读(1425) 评论(0) 推荐(0) 编辑
Running your own dnsmasq with libvirtd
摘要：Running your own dnsmasq with libvirtdOn linux host servers, libvirtd uses dnsmasq to service the virtual networks, such as the default network. A new... 阅读全文
posted @ 2014-07-15 19:02 popsuper1982 阅读(424) 评论(0) 推荐(0) 编辑
libvirt & network filtering iptables/ebtables
摘要：[libvirt] FYI: a short guide to libvirt & network filtering iptables/ebtables use Firewall / network filtering in libvirt ===============... 阅读全文
posted @ 2014-07-15 19:01 popsuper1982 阅读(754) 评论(0) 推荐(0) 编辑
Virtual Networking
摘要：How the virtual networks used by guests workNetworking using libvirt is generally fairly simple, and in this section you'll learn the concepts you nee... 阅读全文
posted @ 2014-07-15 18:59 popsuper1982 阅读(1017) 评论(0) 推荐(0) 编辑
Guest CPU model configuration in libvirt with QEMU/KVM
摘要：Many of the management problems in virtualization are caused by the annoyingly popular & desirable host migration feature! I previously talked about P... 阅读全文
posted @ 2014-07-15 18:47 popsuper1982 阅读(1301) 评论(0) 推荐(0) 编辑
Virtual Machine Lifecycle
摘要：Virtual Machine LifecycleThis page describes the basics of the virtual machine lifecycle. Its aim is to provide fundamental information to create, run... 阅读全文
posted @ 2014-07-15 17:17 popsuper1982 阅读(333) 评论(0) 推荐(0) 编辑
QEMU KVM Libvirt手册(10):Managing Virtual Machines with libvirt
摘要：libvirt is a library that provides a common API for managing popular virtualization solutions, among them KVM and Xen. 使用virt-install创建image qemu-img create -f qcow2 /tmp/centos5.8.img 10G virt-insta... 阅读全文
posted @ 2014-07-15 17:07 popsuper1982 阅读(2088) 评论(0) 推荐(0) 编辑
QEMU KVM Libvirt手册(10): KVM的各种限制
摘要：Overcommits KVM allows for both memory and disk space overcommit. However, hard errors resulting from exceeding available resources will result in guest failures. CPU overcommit is also supported bu... 阅读全文
posted @ 2014-07-14 11:36 popsuper1982 阅读(957) 评论(0) 推荐(0) 编辑
QEMU KVM Libvirt手册(8): 半虚拟化设备virtio
摘要：KVM本身并不提供半虚拟化功能，是通过virtio来实现的 The benefits of virtio drivers are of lower overhead and higher performance. Memory Ballooning (virtio_balloon) memory ballooning可以动态调整guest的内存的大小 如果有-m参数，则向更大的内存调整时无效的，... 阅读全文
posted @ 2014-07-13 00:03 popsuper1982 阅读(2094) 评论(0) 推荐(0) 编辑
QEMU KVM Libvirt手册(7): 硬件虚拟化
摘要：在openstack中，如果我们启动一个虚拟机，我们会看到非常复杂的参数 qemu-system-x86_64 -enable-kvm -name instance-00000024 -S -machine pc-i440fx-trusty,accel=kvm,usb=off -cpu SandyBridge,+erms,+smep,+fsgsbase,+pdpe1gb,+rdrand,+f16c... 阅读全文
posted @ 2014-07-12 19:32 popsuper1982 阅读(11450) 评论(0) 推荐(0) 编辑
Linux virtualization and PCI passthrough
摘要：Processors have evolved to improve performance for virtualized environments, but what about I/O aspects? Discover one such I/O performance enhancement... 阅读全文
posted @ 2014-07-11 15:26 popsuper1982 阅读(838) 评论(0) 推荐(0) 编辑
Anatomy of the libvirt virtualization library
摘要：The libvirt library is a Linux API over the virtualization capabilities of Linux that supports a variety of hypervisors, including Xen and KVM, as wel... 阅读全文
posted @ 2014-07-11 15:11 popsuper1982 阅读(485) 评论(0) 推荐(0) 编辑

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