第3章 Installing and configuring ReaR
Before you back up the undercloud and the overcloud control plane nodes, you must first install and configure Relax and Recover (ReaR) on the undercloud and on each control plane node.
3.1. Installing the required packages
You must install the Relax and Recover (ReaR) packages and packages for generating ISO images on the undercloud node and on each control plane node.
Procedure
Install the required packages on the undercloud and on each control plane node. For example:
[root@controller-x ~]# dnf install rear genisoimage nfs-utils -y
Create a backup directory on the undercloud and on each control plane node. For example:
[root@controller-x ~]# mkdir -p /ctl_plane_backups
Mount the
ctl_plane_backupsNFS directory from the backup node running NFS on the undercloud and on each control plane node. For example:[root@controller-x ~]# mount -t nfs <ip-addr>:/ctl_plane_backups /ctl_plane_backups
Replace
<ip-addr>with the IP address of the backup node running the NFS server.
