Chapter 2. Preparing the backup node
Chapter 2. Preparing the backup node Before you back up the undercloud or control plane nodes, prepare the backup node to accept the backup images. 2.1. Preparing the NFS server ReaR can use multiple transport methods. Red Hat supports back up and restore with ReaR using NFS. Install the NFS server on the backup node. Add the NFS service to the firewall to ensure ports 111 and 2049 are open. For example: Enable the NFS server and start it. 2.2. Creating and exporting the backup directory To copy backup ISO images from the undercloud or control plane nodes to the backup node, you must create a backup directory. Prerequisites You installed and enabled the NFS server. For more information, see Preparing the NFS server . Procedure Create the backup directory: Export the directory. Replace <ip-addr>/24 with the IP address and subnet mask of the network: The entries in the /etc/exports file are in a space-delimited list. If the undercloud and the overcloud control plane nodes use different networks or subnets, repeat this step for each network or subnet, as shown in this example: Restart the NFS server: Verify that the entries are correctly configured in the NFS server:
dnf install -y nfs-utils firewall-cmd --add-service=nfs firewall-cmd --add-service=nfs --permanent systemctl enable nfs-server systemctl restart nfs-server mkdir /ctl_plane_backups cat >> /etc/exports << EOF /ctl_plane_backups <ip-addr>/24(rw,sync,no_root_squash,no_subtree_check) EOF cat >> /etc/exports << EOF /ctl_plane_backups 192.168.24.0/24(rw,sync,no_root_squash,no_subtree_check) /ctl_plane_backups 10.0.0.0/24(rw,sync,no_root_squash,no_subtree_check) /ctl_plane_backups 172.16.0.0/24(rw,sync,no_root_squash,no_subtree_check) EOF systemctl restart nfs-server showmount -e `hostname`