Rescue mode

• Login to the rescue server using ssh or putty (ssh root@ip.add.re.ss)
• Check  the (attached) old disk  with lsblk command and mount it on /mnt

#lsblk

for example if the disk name is /dev/sdb1
#mount /dev/sdb1 /mnt

• Now the old disk has been mounted on /mnt
• Check /mnt/dev /mnt/sys /mnt/proc directories under /mnt, it should be empty (the “/mnt/dev” will have null file)
• Bind the directories from rescue server to /mnt environment as follows

# mount –bind /proc /mnt/proc

# mount –rbind /dev /mnt/dev

# mount –bind /sys /mnt/sys 

Chroot environment

• Create screen with screen command

#screen -S chroot

• From the screen chroot into “/mnt” with following command

#chroot /mnt

• Now, you are connected with the old disk, you could see the actual server’s disk or list the files with ls -al command to verify the disk.

#cat /etc/redhat-release

CentOS release 6.8

• Start the services like cpanel and mysql

#service cpanel start

#service mysql start

• After starting the services, you can take backup with “/scripts/pkgacct” or “/usr/local/cpanel/bin/backup” or “/scripts/cpbackup”
• Take the list of Cpanel users which you want to take backup and initiate with below script. The Cpanel usernames will be in “/etc/userdomains” file so, now we are going to get the list.

#cat /etc/userdomains | cut -d”:” -f2 | sort -n | uniq >> users.txt

• Open the file “users.txt” check if there is any blank spaces and use below command to remove blank spaces

#sed “s/ //g” users.txt

#for i in `cat users.txt`; do /scripts/pkgacct $i; done

• The backup should be in progress
• Detach the screen with Ctrl + ad