diff --git a/README.md b/README.md
index 95c4cd2..3e0aede 100644
--- a/README.md
+++ b/README.md
@@ -1066,6 +1066,28 @@ persistence:
   claimName: forgejo-data
 ```
 
+## Disaster recovery and maintenance
+
+### When a machine or disk is scheduled for replacement.
+
+* `kubectl drain hetzner05` # evacuate all the pods out of the node to be shutdown
+
+### Routing the failover IP
+
+When the machine to which the failover IP (failover.forgejo.org) is routed is unavailable or to be shutdown, to the [Hetzner server panel](https://robot.hetzner.com/server), to the IPs tab and change the route of the failover IP to another node. All nodes are configured with the failover IP, there is nothing else to do.
+
+### Manual boot operations
+
+#### On the machine that runs the NFS server
+
+* `sudo drbdadm primary r1` # Switch the DRBD to primary
+* `sudo mount /precious` # DRBD volume shared via NFS
+* `sudo ip addr add 10.53.101.100/24 dev enp5s0.4001` # add NFS server IP
+
+#### On the other machines
+
+* `sudo ip addr del 10.53.101.100/24 dev enp5s0.4001` # remove NFS server IP
+
 ## Uberspace
 
 The website https://forgejo.org is hosted at