Linux Full System Backup With REAR

Create an export on the NFS server(in this example, it has the IP address 192.168.56.1). We use /storage directory for storing the back up files later.

# yum install nfs-utils

# mkdir /storage

# vi /etc/exports

/storage        *(fsid=0,rw,sync,no_root_squash,no_subtree_check,crossmnt)

# service nfs start

Install packages which are required for creating ISO image on the backup server.

# yum install rear genisoimage syslinux

Modify the configuration file /etc/rear/local.conf on the backup server with these settings.

# vi /etc/rear/local.conf

OUTPUT=ISO

OUTPUT_URL=nfs://192.168.56.1/storage

BACKUP=NETFS

BACKUP_URL=nfs://192.168.56.1/storage

BACKUP_PROG_EXCLUDE=("${BACKUP_PROG_EXCLUDE[@]}" '/media' '/var/tmp' '/var/crash') #here you select the directories you want to exclude

NETFS_KEEP_OLD_BACKUP_COPY=

Create the disaster recovery system and generate backup files.

# rear -d -v mkbackup

A bootable ISO image with disaster recovery system will be created under /var/lib/rear/output by default. At last the files to be backed up as well as the bootable ISO image will be transfered to the NFS server.