Home
Products
Red Hat OpenStack Platform
10
Undercloud and Control Plane Back Up and Restore
Chapter 2. Prepare the Backup Node

Chapter 2. Prepare the Backup Node

Before backing up the undercloud or Control Plane nodes, prepare the backup node to accept the backup images.

2.1. Prepare the NFS Server
Copy link

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.
```
yum install -y nfs-utils
```
```
[root@backup ~]# yum install -y nfs-utils
```
Copy to Clipboard Toggle word wrap

Add the NFS service to the firewall to ensure ports 111 and 2049 are open. For example:

firewall-cmd --add-service=nfs
firewall-cmd --add-service=nfs --permanent

[root@backup ~]# firewall-cmd --add-service=nfs
[root@backup ~]# firewall-cmd --add-service=nfs --permanent

Copy to Clipboard

Toggle word wrap

Enable the NFS server and start it.

systemctl enable nfs-server
systemctl restart nfs-server

[root@backup ~]# systemctl enable nfs-server
[root@backup ~]# systemctl restart nfs-server

Copy to Clipboard

Toggle word wrap

2.2. Create and Export the Backup Directory
Copy link

Copying the backup ISO images from the undercloud or Control Plane nodes to the backup node requires a backup directory.

Create the backup directory.
```
mkdir /ctl_plane_backups
```
```
[root@backup ~]# mkdir /ctl_plane_backups
```
Copy to Clipboard Toggle word wrap
Export the directory.
```
[root@backup ~]# cat > /etc/exports << EOF
/ctl_plane_backups <ip-addr-x>/24(rw,sync,no_root_squash,no_subtree_check)
EOF
```
```
[root@backup ~]# cat > /etc/exports << EOF
/ctl_plane_backups <ip-addr-x>/24(rw,sync,no_root_squash,no_subtree_check)
EOF
```
Copy to Clipboard Toggle word wrap
Replace <ip-addr-x> with the IP address of the network. For example, replace <ip-addr-x>/24 with 10.0.0.1/24, where 10.0.0.1/24 is the IP address and subnet mask in CIDR notation. If the undercloud and the overcloud Control Plane nodes use different networks or subnets, repeat this step for each network or subnet.

Back to top

Learn

Try, buy, & sell

Communities

About Red Hat Documentation

We help Red Hat users innovate and achieve their goals with our products and services with content they can trust. Explore our recent updates.

Making open source more inclusive

Red Hat is committed to replacing problematic language in our code, documentation, and web properties. For more details, see the Red Hat Blog.

About Red Hat

We deliver hardened solutions that make it easier for enterprises to work across platforms and environments, from the core datacenter to the network edge.

Theme

© 2025 Red Hat