3.2. Creating the configuration files

As the root user on the undercloud and on each control plane node, perform the following steps:

Create the ReaR configuration file:

[root@controller-x ~]# mkdir -p /etc/rear
[root@controller-x ~]# tee -a "/etc/rear/local.conf" > /dev/null <<'EOF'
OUTPUT=ISO
OUTPUT_URL=nfs://<ip-addr>/ctl_plane_backups
ISO_PREFIX=<SERVER_NAME-X>
BACKUP=NETFS
BACKUP_PROG_COMPRESS_OPTIONS=( --gzip )
BACKUP_PROG_COMPRESS_SUFFIX=".gz"
BACKUP_PROG_EXCLUDE=( '/tmp/*' '/data/*' )
BACKUP_URL=nfs://<ip-addr>/ctl_plane_backups
BACKUP_PROG_EXCLUDE=("${BACKUP_PROG_EXCLUDE[@]}" '/media' '/var/tmp' '/var/crash')
BACKUP_PROG_OPTIONS+=( --anchored --xattrs-include='*.*' --xattrs )
EOF

Replace <SERVER_NAME-X> with the hostname of the node. For example, if the node hostname is controller-0, replace <SERVER_NAME-X> with controller-0. Replace <ip-addr> with the IP address of the backup node running the NFS server configured in 2章Preparing the backup node.

重要

If the undercloud or control plane nodes use UEFI as their boot mode, you must add USING_UEFI_BOOTLOADER=1 to the configuration file too.

Create the rescue.conf file:

[root@controller-x ~]# tee  -a "/etc/rear/rescue.conf" > /dev/null <<'EOF'
BACKUP_PROG_OPTIONS+=( --anchored --xattrs-include='*.*' --xattrs )
EOF

3.2. Creating the configuration files

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