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Wrote ISO image: /var/lib/rear/output/rear-production.iso (202M) Copying files and directoriesĬreating recovery/rescue system initramfs/initrd initrd.cgz with gzip default compressionĬreated initrd.cgz with gzip default compression (200298197 bytes) in 20 seconds To log into the recovery system via ssh set up /root/.ssh/authorized_keys or specify SSH_ROOT_PASSWORDĬopying logfile /var/log/rear/rear-production.log into initramfs as '/tmp/rear-production-partial-T02:40:30+05:30.log'Īfter some minutes, the files stored in local directories are copied over the network to the remote NFS target location. Using guessed bootloader 'GRUB' (found in first bytes on /dev/vda)
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Using backup archive '/tmp/rear.gGxFXV4S0pcfEmD/outputfs/production/' Using log file: /var/log/rear/rear-production.log Rear mkrescue - create only the rescue media.īackup the production server with an ISO rescue media ~]# rear -v -d mkbackup Rear mkbackuponly - create only the backup tar file. rear mkbackup - create the rescue media and backup the system. ReaR accepts different options based on whether you need to create a rescue media and/or backup the system as a tar file. Examples are /media and /var/tmp ~]# cat '/media' '/var/tmp' '/var/crash') Execute ReaR on the server to be backed up Which backup method to use: External third-party or internal ReaR mechanism?īackup target location when using the internal backup method.ĭirectories to be excluded while performing the backup. Valid_lft forever preferred_lft forever Configure ReaR on the server to be backed upĮdit the /etc/rear/nf file with the following configurations: OUTPUTĭefine the bootable image type among USB, ISO, RAWDISKīackup Target among NFS, CIFS, FILE, FTP, HTTP, RSYNC Inet6 fe80::5054:ff:fe5f:f2e0/64 scope link noprefixroute
#Horcrux email backup exclude list install#
Red Hat Enterprise Linux release 8.2 ~]# dnf install rear genisoimage ~]# ip a s eth0 In RHEL, these packages are part of the base repository. On the production server, install the rear, genisoimage, and syslinux packages. Valid_lft forever preferred_lft forever Deploy ReaR on the server to be backed up
Red Hat Enterprise Linux release 8.2 ~]# cat /etc/exports.d/rear.exportsĢ: eth0: mtu 1500 qdisc fq_codel state UP group default qlen 1000 In this article, server storage is configured as an NFS server to be used as the backup target for the ReaR utility deployed on the production server. ReaR supports NFS, CIFS (Samba), USB, rsync, and local destinations as backup targets. Configure the destination server as a backup target For example, replace dnf with yum for older Red Hat-based systems. Adjust the instructions to match your operating system version. The production and storage servers each have Red Hat Enterprise Linux 8.2 (RHEL) deployed. Throughout this post, I refer to the server to be backed up as production and the external NFS server as storage. While there is a lot of documentation already out there on the Internet, this article covers ReaR's functionality with supporting screenshots. It is highly recommended to run ReaR pro-actively per your existing backup schedules so that you have the up-to-date server state. It also gives the system administrator the flexibility to select files for backup. ReaR creates a bootable image consisting of the latest state of the server to be backed up. By integrating with your existing backup solution, ReaR can be used as a backup and restore utility, as well. ReaR is an open-source administration tool to create disaster recovery archives and bootable ISO images of a Linux server. Yes, you read it right-a tool to help you have peace of mind (relax) when it comes to performing mundane backup and recovery operations. While many ad-hoc utilities help sysadmins manage backups, this article focuses on the ReaR - Relax and Recover tool. Linux system administration skills assessmentīacking up and recovering a Linux server is a common activity for system administrators throughout their career.
A guide to installing applications on Linux.
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Download RHEL 9 at no charge through the Red Hat Developer program.