Scenarios Overview¶

In this chapter will be go over some simple and more complex examples used with ReaR.

Use NAS share to archive rear image and OS with zstandard as compression algorithm¶

Also, we use as temporary file system to create the ISO image not /tmp, but /oem - see export TMPDIR=/oem

Furthermore, all file systems and volume groups will be part of the OS archive and therefore, also for the recovery process. We commented out the variable setting # ONLY_INCLUDE_VG=( "vg00" ) and explicit defined variable AUTOEXCLUDE_DISKS=no to achieve this.

To force the zstandard as compression algorithm instead of the default gzip we added the zstd executable to the COPY_AS_IS variable array and defined the variables BACKUP_PROG_COMPRESS_OPTIONS and BACKUP_PROG_COMPRESS_SUFFIX.

export TMPDIR=/oem
# ONLY_INCLUDE_VG=( "vg00" )
BACKUP=NETFS
NETFS_PREFIX=image
NETFS_KEEP_OLD_BACKUP_COPY=yes
CLONE_USERS=( "${CLONE_USERS[@]}" oracle )
CLONE_GROUPS=( "${CLONE_GROUPS[@]}" dba )
TIMESYNC=CHRONY
TIMESYNC_SOURCE=10.255.255.10
SSH_ROOT_PASSWORD="rear"
COPY_AS_IS=( "${COPY_AS_IS[@]}" /etc/oratab clear $(which zstd) )
POST_RECOVERY_SCRIPT=/mnt/local/u02/restore_oracle_u02_database_directory.sh
AUTOEXCLUDE_DISKS=no
BACKUP_PROG_EXCLUDE=( ${BACKUP_PROG_EXCLUDE[@]} '/u02/ora*' '/u02/recoveryarea01' '/u01/app/oracle/admin/JHHD0173/diag/rdbms/*' '/u01/app/oracle/admin/JHHD0173/RMAN/logs/*' '/app/scm-dvl/SCM-Releases/*' )
BACKUP_OPTIONS="nfsvers=4,nolock"
BACKUP_URL=nfs://mynas.example.com/rear_backups/linux_images/my-server.example.com;
PRE_BACKUP_SCRIPT=( 'rm -rf /tmp/cfg2html*' )
USE_CFG2HTML=no
FIRMWARE_FILES=( 'no' )
BACKUP_PROG_COMPRESS_OPTIONS=( '--use-compress-program=zstd' )
BACKUP_PROG_COMPRESS_SUFFIX=".zst"