Using rsync to migrate or clone linux system

P2V,V2V

NOTE: Before hot cloning, ensure you disable all the services that involve shipping or writing data e.g. databases, mail service, etc.

Install Rsync in Linux

~]# yum install -y rsync
~]# rsync --version
rsync  version 3.1.2  protocol version 31
Copyright (C) 1996-2015 by Andrew Tridgell, Wayne Davison, and others.
Web site: http://rsync.samba.org/
Capabilities:
    64-bit files, 64-bit inums, 64-bit timestamps, 64-bit long ints,
    socketpairs, hardlinks, symlinks, IPv6, batchfiles, inplace,
    append, ACLs, xattrs, iconv, symtimes, prealloc

rsync comes with ABSOLUTELY NO WARRANTY.  This is free software, and you
are welcome to redistribute it under certain conditions.  See the GNU
General Public Licence for details.

Cloning a Linux Server

~]# ssh-keygen -t rsa
~]# ssh-copy-id 192.168.3.115

~]# cat >/tmp/exclude-files.txt <<EOF
/root/.ssh
/boot
/dev
/tmp
/sys
/proc
/mnt
/etc/fstab
/etc/mtab
/etc/mdadm.conf
/etc/sysconfig/network*
EOF

~]# cat >/tmp/rsync.sh <<EOF
#!/bin/bash
rsync -avP -e 'ssh -o StrictHostKeyChecking=no' --exclude-from=/tmp/exclude-files.txt / 192.168.3.115:/
EOF

~]# chmod +x /tmp/rsync.sh
~]# nohup /tmp/rsync.sh &

If have an increment rsync, remove the /root/.ssh/known_hosts file on the source and copy ssh key to the destination again.