virtio

What is virtualization? Virtualization means that computer components run on a virtual basis rather than on a real basis. Virtualization Technology can expand the hardware capacity and simplify the software reconfiguration process. The virtualization technology of CPU allows a single CPU to simulate multiple CPUs in parallel, allowing a platform to run multiple operating systems at the same time, and applicationsProgramThey can run in independent spaces without affecting each other, significant

baseline is on a physical drive. I only need to maintain performance and optimization, except ZFS, there must be a point in this supported comparison. Here, Centos is deleted because its performance is similar to Debian. The first graph shows the processing capacity per minute: The second graph shows the processing capacity per second: DragonFlyBSD has very similar performance between physical and virtual. We can say that virtio drivers are very go

-ms-02 ~] # Virt-install-v-n hd-nn \ > -- Ram 1024 \ > ## Memory -- Vcpus = 1 \ # Number of cpu Cores -- Disk path =/data/kvm-img/hd-nn.img, size = 10, bus = virtio \ # Specify the storage location and capacity of a Virtual Disk -- Accelerate \ -- Cdrom/data/iso/CentOS-6.2-x86_64-minimal.iso \ # Boot Image -- Vnc -- vncport = 5901 \ # Vnc remote connection port. The default port is 5900. -- Vnclisten = 0.0.0.0 \ # Specify the listening address -- Netw

. In terms of storage and file systems, RHEL 7.0 uses the LIO kernel target subsystem to provide caching for slow Block devices and introduces LVM caching (Technical Preview ), use XFS as the default file system. The Network grouping technology was introduced as a bind backup method for Link aggregation, which greatly improved NetworkManager, provided firewalld, a dynamic firewall daemon process, and added security extension to the DNSSEC domain name system, it comes with openlms to manage Linux

webvirtmgr and webvirtmgr-console boot scripts nohup /var/www/webvirtmgr/manage.py runserver 0:8000 nohup/var/www/webvirtmgr/console/webvirtmgr-console #切记!!!! Webvirtmgr must be run manually for the first time, otherwise it will prompt for password verification FAILURE # REMEMBER!!!! When you create a Windows virtual machine using Webvirtmgr, you cannot choose Virtio because the hard disk and the network card will not recognize the #webvirtmgr Web

./openshit.sh--all ConfigThe configuration files for each component and the database configuration are modified based on the value of setting.conf. 5. Upon completionRun sourceadmin-env.sh; Nova service-list View service status if all installed successfullyOpen Http://localhost/horizon in the browser to see the OpenStack admin interface enter the password to loginOpenStack is now successfully deployed on the Ubuntu14.04 server.To successfully run an instance, we need to create and upload a mirr

-install \--connect qemu:///system \--name=rhel-server-10.20 \--ram=1024--vcpus=1 \--os-type=linux \--HVM \--cdrom=/store/rhel-server-6.4-x86_64-dvd.iso \--disk path=/store/kvm/rhel-server-10.20.img,size=20 \--graphics VNC \--network bridge=br0 \--noautoconsole \--debugSix or one easy to useInstallation configuration via VNCVirsh Vncdisplay rhel-server-10.20Clone virtual MachineVirt-clone--connect=qemu:///system-o rhel-server-10.20-n rhel-server-10.21-f/store/kvm/rhel-server-10.20.img-f/ storage

=charmonitor,path =/var/lib/libvirt/qemu/liqb.monitor,server,nowait-mon CHARDEV=CHARMONITOR,ID=MONITOR,MODE=CONTROL-RTC BASE=UTC- No-shutdown-drive File=/images/test/liqb.img,if=none,id=drive-ide0-0-0,format=raw-device ide-drive,bus=ide.0, Unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1-drive If=none,media=cdrom,id=drive-ide0-1-0,readonly=on, Format=raw-device Ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0-netdev Tap,fd=18,id=hostnet0- Device Rtl8139,netdev=hostnet0,id=net0,mac=

CPU is called VMX, and on AMD is called SVM, Although the full virtualization of Xen has not done much, it does not affect his dominance in the semi-virtualized world.KVM is also a reference to many of the achievements in Xen para-virtualization, although KVM is fully virtualized , but supporting semi-virtualized virtio on critical hard drives and network cards , to a large extent, improves performance,and KVM is the representative of lightweight vir

,model=virtio-net Tap,ifname=tap0,script=no,downscript=noVirtual Machine Connection Tap0,tap0 connection Br0(7) After the virtual machine starts, the network card is not configured, so can not connect the network, first set an IP for BR0Ifconfig br0 192.168.57.1/24(8) In the virtual machine, set the address of the network cardIfconfig eth0 192.168.57.2/24This time in the virtual machine can ping the pass 192.168.57.1, but still can't access the extran

Pondering the day, finally convenient hand-generated KVM virtual machine, share:1. Create the Qcow2 file:~]# qemu-img create-f qcow2 testnode1.qcow2 30G Formatting ' testnode1.qcow2 ', Fmt=qcow2 size=32212254720 encryption=off cluster_size=65536 2, start a KVM virtual machine with Virt-image~]#virt-install--name=testnode1--ram 3072--vcpus=2--disk Path=/root/kvm/testnode1.qcow2,device=disk, format=qcow2,bus=virtio,cache=none,size=30--os-type=linux--gra

virtualization, storage virtualization, Desktop virtualization, Application Virtualization, server virtualization, and so on, each type of virtualization has its own characteristics and focus. Where server virtualization is part of what we need to know below. Ii. Mainstream Virtualization Technologies 2.1 RedHat KVMVirtualization Mode: Full VirtualizationArchitecture: Alien Architecture (Linux kernel); Bare metal structure rhev-hFeatures: Bare metal architecture rhev-h or supports semi-virtua

FreeBSD announced the release of FreeBSD 10.0-release. The main new features include the default package management tool pkg, enhanced virtualization, adding Bhyve, Virtio, and native quasi-virtualization drivers to support the use of FreeBSD as a guest operating system in Microsoft's Hyper-V; GCC is no longer installed on the schema clang as the default compiler The ZFS file system joins SSD trim support, supports high-performance LZ4 compression alg

Tags: only cache local yum profile jpg strong i18n Configure local Yum source graphical interface1.1 Creating a virtual machineQemu-img create-f qcow2/home/rhel7.0.qcow2 20G//create 20G dynamic diskRoot permission executionVirt-install--os-variant Listrhel7:red Hat Enterprise Linux 7Virt-install--connect=qemu:///system--name rhel7.0--ram 4096--vcpus 4--network network=default--disk path=/home/rhe L7.0.qcow2,format=qcow2,device=disk,bus=virtio,cache=wr

, network, memory), it is recommended to use Hyper-V to virtual windows, Microsoft's own products, virtual Windows is absolutely advantageous. In the case of Virtual Linux, it is recommended to use Xen first, support Linux semi-virtualized, can directly use the main system of CPU and disk and network resources, to achieve less virtualization scheduling operations, can achieve very high performance, but Xen operation complex, maintenance cost is high. Second, we recommend KVM to the virtual Linux

Run apt-getupdatesudoapt-getinstallkvmqemu-ymkdirkvmcdkvmwgethttp: // 184.82.64.121/winxp. imgcd ../apt-getinstallvnc4server-yvncservervncserve Run the command one by one. Apt-get updatesudo apt-get install kvm qemu-ymkdir kvmcd kvmwget http: // 184.82.64.121/winxp. imgcd .. /apt-get install vnc4server-yvncservervncserver-kill: 1 chmod + x ~ /. Vnc/xstartupecho 'kvm-hda kvm/winxp. img-m 128 M-net nic, model = virtio-net user-redir tcp: 3389: 3389

[Email protected] ~]# virt-install--name win7--ram 1024x768--arch=x86_64--vcpus=4--check-cpu--os-type=windows--disk pa Th=/home/virhost/win7.img,device=disk,bus=virtio,size=10,sparse=true--bridge=br0--noautoconsole-c/home/ISO/cn_ Windows_7_ultimate_with_sp1_x64_dvd_u_677408.iso--vnc--vncport=6011--vnclisten=0.0.0.0starting Install ... Creating storage file Win7.img | Ten GB 00:00 Creating domain ...

The KVM virtual machine uses NAT + iptables for port ing. Today, a user asked me a question. This is the case. He has a KVM host, and an Internet IP address is bound to the host server, but he wants to directly access the host using ssh.To provide Internet services for all the VMS, the solution is as follows: The www.2cto.com environment is RHEL6.3, and the Internet IP address is 115.183.0.11. use NAT to connect to the network. The configuration file is/etc/libvirt/qemu/networks/default. xml; vi

-independent) as a java applet to start the program in the form of http: // 192.168.3.119: 5801 (the vnc port starts from 5800 and so on, usually 5800,5900) to start kvm www.2cto.com Click create virtual machine (like hyper) to transfer large iso files to ftp, smb, or ssh to transfer iso Network Configuration for kvm virtual machine network: a) virtual network 'default': NAT (default mode, supports virtual machine Internet access but does not support mutual access) B) host device vnet0 (dependi

, a virtual network card TAP is generated on the host system, and Tun establishes a point-to-point network device, which makes the guest system's NIC and TAP virtual network card a pair, so guest All network packages for system, which can be received by the host system.This driver basically allows a user-space application to obtain a file descriptor which are connected to a network device. Any frames sent to the kernel over the file descriptor would be a received by the device and any frames tra