xen host

This article explains the following content: 1. installation steps of xen; 2. how to use xen to build your own virtual machine; 3. problems encountered during installation. 1. check before installation 1) Check whether your host cpu supports virtualization: enter the command cat/proc/cpuinfo | grepflags to check whether there is a pae in the result. If yes, semi-

system is restarted, check whether the kernel is Xen: # Uname-r2.6.18-128.2.1.el5xenCheck whether Xen has been started: #/Usr/sbin/xm listName ID Mem (MiB) VCPUs State Time (s)Domain-0 0 1220 2 r ----- 3214.1Create and install guestIf you think of the operating system of the running Xen kernel as the host, the operati

. For example, we can install and use Slackware, Debian, Gentoo... and other releases on Fedora. Because Xen is kernel-based, compared with VMWARE, it occupies about a few percent of the system resources of VMWARE. Is Xen more advantageous? Only when you practice it can you know. This is also the main reason for my writing this article; 1.1 Xen features; Virtual

. # Permissive-SELinux prints warnings instead of enforcing. # Disabled-No SELinux policy is loaded. SELINUX = disabled # SELINUXTYPE = can take one of these two values: # Targeted-Targeted processes are protected, # Mls-Multi Level Security protection. SELINUXTYPE = targeted 3) edit the/etc/hosts file and add an item for the host name specified when Fedora16 is installed, as shown below: [Root @ localhost ~] $ Gedit/etc/hosts 127.0

Chkconfig libmongod on Chkconfig libvirt-guest on Chkconfig libvirt-guests on 3. After restart: [Root @ localhost xen] # ifconfig Lo Link encap: Local Loopback Inet addr: 127.0.0.1 Mask: 255.0.0.0 Inet6 addr: 1/128 Scope: Host Up loopback running mtu: 65536 Metric: 1 RX packets: 928 errors: 0 dropped: 0 overruns: 0 frame: 0 TX packets: 928 errors: 0 dropped: 0 overruns: 0 carrier: 0 Collisions: 0 txque

-3.0.3-132.el5.i386.rpm The dependent packages include: Gnome-applet-vm-0.1.2-1.el5.i386.rpm Libvirt-devel-0.1.8-15.el5.i386.rpm Python-virtinst-0.99.0-2.el5.noarch.rpm Libvirt-0.1.8-15.el5.i386.rpm Libvirt-python-0.1.8-15.el5.i386.rpm Virt-manager-0.2.6-7.el5.i386.rpm Virtualization-en-US-5.0.0-7.noarch.rpm Virtualization-zh-CN-5.0.0-7.noarch.rpm Sat. Note that the version number in the xen-libs-3.0.3-132.el5.i386.rpm package must be consistent with

With the extensive use of virtualization technology, the use of virtualization thinking and start more, such as direct expansion of disk space in this case, I recommend a new disk to add a way to fit the normal physical machine to use the way. Another way to increase disk space is to extend the space of an existing disk directly, in this way. 1. View the virtual machine configuration file [Root@node1 data]# [Root@node1 data]# XM List Name ID Mem (MiB) Vcpus state time (s) Domain-0 0 1744 1

Preparing the Linux virtual system installation source #可以使用HTTP, FTP, or NFS are provided to Xen virtual machines for system installation. FTP is used here for installation, very simple and fast. 1) Installation of VSFTPD service # yum Install-y vsftpd # service VSFTPD Start 2 Mount CD to FTP anonymous directory # mount/dev/cdrom/var/ftp/pub/ Description: VSFTPD will support anonymous access after installation. 2. Create a virtual machine 1)

you know. This is also the main reason for my writing this article; 1.1 Xen features; Virtual Machine performance is closer to the real hardware environment) Switching between platforms and virtual platforms in real physical environments) Each customer's Virtual Machine supports 32 virtual CPUs, hot swapping through VCPU) Supporting the PAE Instruction Set x86/32, x86/64 platforms Using Intel virtual support VT support to use virtual original operati

Centos 5.5 installation and use of Xen is a mainstream Virtual Machine with minimal performance loss (but does not support windows). It can run on x86 systems and is porting to x86_64, IA64, and PPC. Porting to other platforms is technically feasible and may be implemented in the future.1. install the Linux kernel supporting Xen and Xen1yum-y install xen kernel-

as follows: Listen 8000 Listen 8001 To increase the virtual host: Documentroot/data/os Options Indexes MultiViews AllowOverride None Order Allow,deny Allow from all Restart HTTPDD:/ETC/INIT.D/HTTPD Reload 6. Create Virtual machines The code is as follows: Virt-install-n xen1-r 256-f/home/xen1.img-lhttp://192.168.0.110:8001–network=network:default-s 20–nographics–vnc –vcpus=8 -N: Follow the virtual machine

= 64Name = "ExampleDomain"Vif = ["]disk = [' Phy:hda1,hda1,w ']root = "/dev/hda1 ro"Extra = "4"[email protected] xen]# cat xmexample1|egrep-v ' (^#|^\ *$) ' >zyt_vm02[Email protected] xen]# VI zyt_vm02[email protected] xen]# cat zyt_vm02#kernel = "/boot/vmlinuz-2.6.10-xenu"Memory = 512Name = "ZYT_VM02"Vif = [' BRIDGE=XENBR1 ']disk = [' File:/

RHEL 5 is a new system with high security and stability ., Xen is an open-source Virtual Machine monitor developed by the University of Cambridge. It intends to run up to 128 fully functional operating systems on a single computer, so the perfect combination of RHEL 5 Xen is now available. Red Hat adopted Xen server virtualization technology for the first time in

paravirtualized optimized driver s for disks and network: Kernel = "Hvmloader" builder= ' hvm ' device_model = ' QEMU-DM ' name = ' F16PVHVM ' memory = 1024 vcpus= 1 pae=1 acpi=1 apic=1 vif = [' Mac=00:16:4f:02:02:15, Bridge=virbr0, model=e1000 '] disk = [' phy:/ Dev/vg01/f16pvhvm-disk0,hda,w ', ' file:/root/iso/fedora-16-x86_64-dvd.iso,hdc:cdrom,r '] boot= ' CD ' Xen_ Platform_pci=1 on_poweroff = ' Destroy ' on_reboot = ' restart ' on_crash = ' Restart ' Sdl=0 vnc=1 vncpasswd= ' stdvga=0

(xc_handle, sysctl ); If (Ret! = 0) { Perror ("failure to get event mask from xen "); Exit (1 ); } Else { Printf ("current event mask: 0x %. 8x \ n", sysctl. U. tbuf_op.evt_mask ); } ... Snip... Xc_interface_close (xc_handle ); Return 0; } 2. xen_sysctl command (the main IOCTL command isIoctl_private_hypercall) No. Command Comment Struct 1 Xen_sysctl_readconsole Read console content from

name as a parameter to help to display the detailed usage of this command. If you do not attach any parameters, just list all the commands and a simple description. passwd: Modify the password used to log on to Xen-shell. Pause: Stop VPS. Note that the stop is not closed, and the unpause can be used to make the VPS run immediately without the need to start the process. Quit: With exit, Exit Xen-shell.

The Host OS is debian6.0.3 _ amd64.Basically, it is based on http://wiki.debian.org/xen.1. Install xen and other toolsJava codeAptitude-P install xen-linux-system xen-tools xen-hypervisor-4.0-amd64Aptitude-P install

follows: Listen 8000 To increase the virtual host: The code is as follows: 　　 Restart HTTPDD:/ETC/INIT.D/HTTPD Reload 6. Create Virtual machines The code is as follows: Virt-install-n xen1-r 256-f/home/xen1.img-lhttp://192.168.0.110:8001–network=network:default-s 20–nographics–vnc –vcpus=8 -N: Follow the virtual machine name and configure/etc/xen -r: The memory size

Most of our machines have used the CENTOS4 image from jailtime.org. Editing a File system image using loopback device: [Root@arch1 xen]# Mount-o Loop/opt/xen/centos.4-3.img/mnt/xenfs[Root@arch1 xen]# Mount/dev/mapper/volgroup00-logvol00 on/type ext3 (rw)None On/proc type proc (rw)None On/sys type SYSFS (rw)None on/dev/pts type devpts (rw,gid=5,mode=620)/dev/cciss