Xen : Create Virtual Machine

Xen : Create Virtual Machine 2016/01/25

	Install GuestOS and create a Virtual Machine. This example shows to install CentOS 7.
[1]	This example shows to use Libvirt, so install it first.

# enable CentOS Xen [root@dlp ~]#  yum --enablerepo=centos-virt-xen -y install libvirt libvirt-daemon-xen virt-install [root@dlp ~]#  systemctl start libvirtd  [root@dlp ~]#  systemctl enable libvirtd

[2]	Create a Virtual Machine with Para-Virtualization.

# create a directory for images [root@dlp ~]#  mkdir -p /var/xen/images [root@dlp ~]#  virt-install \ --connect xen:/// \ --paravirt \ --name centos7 \ --ram 4096 \ --disk path=/var/xen/images/centos7.img,size=20 \ --vcpus 2 \ --os-type linux \ --os-variant rhel7 \ --network bridge=br0 \ --graphics none \ --location 'http://ftp.iij.ad.jp/pub/linux/centos/7/os/x86_64/' \ --extra-args 'text console=com1 utf8 console=hvc0' Starting install...      # installation starts

[3]	After finishing installation, login prompt of GuestOS is show like follows.

CentOS Linux 7 (Core) Kernel 3.10.0-327.el7.x86_64 on an x86_64 localhost login:

[4]	It's possible to switch GurstOS - HostOS with virsh command like the examples on KVM, and also it's possible to do with Xen admin tool like follows.

[root@localhost ~]#      # Ctrl + ] key [root@dlp ~]#      # Host's console # display active domains [root@dlp ~]#  xl list  Name ID Mem VCPUs State Time(s) Domain-0 0 4090 6 r----- 226.3 centos7 2 4096 2 -b---- 17.0 [root@dlp ~]#  xl console centos7       # move to Guest [root@localhost ~]#      # Guest's console