Recently, we have been studying virtualization technology, have a certain understanding of the VMware virtual machine, the latest whim, can you install a virtual machine in a VMware virtual machine?Then the problem comes, first of all, you need a computer, VMware software, (My Computer Configuration slag, memory a bit too much), so we can start, first in VMware to load an Ubuntu system, (preferably 64-bit), Once the system is installed, we can load th
Today's whim to do a simple architecture to play, Architecture introduction:A server, install KVM tools, virtual 2 servers to build lamp and LNMP, and then the primary server to do a nginx load balancing.1. Preparatory work:Do a virtual machine centos6.7-64 bit, configured as follows, how do not introduce, not small white words should all know.This can be based on your computer configuration, memory can be
The five main components of a computer:Arithmetic, controller, memory, input, outputVirtualization is virtual for CPU, memory, disk, network, IOThe virtual CPU is in the form of a Time Shard, which allows the CPU to run multiple processesThe memory is spatially multiplexed,MMU Memory Management Unit: the memory that each process has will eventually be mapped to physical,Memory divides physical memory space into multiple spaces, each called a paging, for process useVirtual network card: Time seri
In the KVM installation section under CentOS 6, I wrote a summary of KVM virtualization (i) KVM environment installation. As the CentOS 7 compared to the previous version has changed a lot, the current test CentOS 7 Environment KVM installation and construction, as follows.
First, the installation of
OpenStack is an open source cloud computing management platform project that supports almost all types of cloud environments, with the goal of providing a simple, scalable, rich, standard, unified cloud management platform. This article we talk about Devstack installation and configuration OpenStack development environment.
OpenStack installation and configuration is a bit complicated, especially for beginners, the first time you install OpenStack of
Introduction to KVM Virtual machines
The abbreviation for KVM (kernel-based virtual Machine) is an open source, fully virtualized solution. Since Linux2.6.20 is integrated in various distributions of Linux, KVM virtualization runs in the x86 architecture and requires the support of hardware (Intel VT or amd-v), which is managed using Linux's own scheduler. The f
F3 to restart if the following conditions occurF3 Restart, quickly press F12, choose to boot from the CD, prompted below to press F6 when prompted by F6This time press S, the next page, because it is a 32-bit system,Select the second, enter the page after the effect of the followingYou can see the following interface after you returnPress F8 (or Shift+f8) to enter the partitionFormat to FAT32, do not know the NTFS line does not work, here is fat, not ntfs! press C to create the diskPress ENTER
In the past, CentOS6 was changed because UbuntuServer did not solve Nic bridging because of kvm. It is easier to configure Bridging for Centos6 and supports VirtualMachineManager, but it is not ideal to manage virtual machines only with root. Now try again to configure the javastuserver Nic bridging, and find it is actually very simple 1. Install the minimal installation of javastuserver12.04, only enable O
Old left at the beginning of the month Ramnode New Year's promotional campaign to purchase the one-month Ramnode KVM 512MB program and then also wrote a KVM program evaluation article (here), personally think Ramnode VPS host stability is still relatively good, and if there are individual small blog to choose an annual payment scheme is relatively high cost. One of the
to the VM
The xml configuration file is
Step 3 Test
A strange phenomenon was found during the test. The USB flash disk cannot be identified on Windows 7 of centos6 host machine.
However, if it is a centos6 virtual machine, the USB flash drive can be used normally. At first, we thought it was a problem with the Windows 7 driver. However, after trying various drivers, the problem persists.
Later, I tried the Windows 7 Virtual Machine on fedora21. I can directly use it after I plug in the USB
machine.KVM Virtual machine nesting and VMware principle is different, VMware first layer is the use of hardware virtualization technology, the second layer is full software simulation, so VMware can only do two layers of nesting. KVM is the physical CPU to all the characteristics of the virtual machine, all theoretically can be nested n multilayer.Configuration methodBecause nested technology CentOS is not officially supported, it is recommended to
:///mnt/cdEnabled=1Gpgcheck=1Gpgkey=file:///etc/pki/rpm-gpg/rpm-gpg-key-redhat-release3. Installing the KVM software on an existing system[Email protected] ~]# yum-yinstall QEMU-KVM qemu-kvm-tools python-virtinst.noarch qemu-img Bridge-utilsvirt-manager Libvirt1.Desktop (with desktop can not install this)2.qemu-kvm3.qe
the presentation, we have learned about the current development and status of Xen, and we have detailed instructions on how to install Xen under FEDORA13 and some basic operations under Xen, and then we discuss the Xen and VMware esxi,hyper-v and KVM At the same point, finally we explain how Xen works with examples. In the second part of this series, we will explain how to build a Xen development environme
Environment: Ubuntu 12.04 Server
1. KVM Installation
First, check whether your processor supports hardware virtualization. If yes, run the following command:
Egrep '(vmx | SVM)' -- color = always/proc/cpuinfo
The following content should be displayed:
[Email protected] Ubuntu :~ # Egrep '(vmx | SVM)' -- color = always/proc/cpuinfo
Flags: fpu vme de pse tsc msr pae mce cx8 APIC Sep mtrr pge mca cmov Pat limit 36 clflush
MM
KVM Virtual machine migration is divided into 4 types
(1) Thermal migration is based on shared storage
(2) Thermal migration based on local storage
(3) Cold migration is based on shared storage
(4) Cold migration based on local storage
This is a hot migration based on local storage.
Dynamic Block Migration version requirements
QEMU version requires greater than or equal to 0.12.1 (centos6.7 or above is OK)
Rpm-qa|grep qemu
qemu-
Prior to the VirtualBox nested installation of KVM virtualization, the use of VNC viewer to install the child, the speed is OK, but the installation system after the start of the machine is very slow. The login interface takes approximately twenty or thirty minutes from boot to appearance. The adjustment has been adjusted, but also to upgrade the VirtualBox to the latest 5.0, or not. It was later found that
To do this, we need the CPU support virtualization, some machine support but not in the BIOS, this need to be opened beforehand.1. VMware installation centos6.6 64 bit (slightly)Here are a few things to note:A. Memory to 2gB. Disk to 50g, or separate disk for storage of virtual machine filesC. The most critical step, when creating a virtual machine, the CPU needs to be configured virtualization (tick virtualization Intel vt-x/ept or Amd-v/rvi (V))2. Pre-inst
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