Ch15. Using Virtualized Systems 

KVM (Kernel-based Virtual Machine):

[root@master ~]# cat /proc/cpuinfo 
vmx............ for intel based processor
svm............ for AMD based processor
[root@master ~]# lsmod | grep kvm         (to check if the kvm module is available)
[root@master ~]# systemctl status libvirtd
[root@master ~]# ip link show
virbr0......... virtual bridge (embeded switch)
[root@master ~]# arch
x86_64......... to support virtualization, you need a 64 bit kernel

Virtual manager (GUI tool):

[root@master ~]# yum  -y install kvm libvirt virt-manager qemu-kvm
[root@master ~]# virt-manager 
Or)
Applications> System Tools> Virtual Machine Manager

[root@master ~]# dd if=/dev/cdrom of=/root/RHEL7.iso      (create an ios file)

Virsh (CLI tool):

[root@master ~]# virsh 
virsh # help
virsh # exit
[root@master ~]# virsh list              (list all running virtual machines)
[root@master ~]# virsh list --all        (list all virtual machines)
[root@master ~]# virsh destroy rhel7.1   (stop the machine named rhel7.1)
[root@master ~]# virsh start rhel7.1     (start the machine named rhel7.1)

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