diff --git a/group_vars/all.yml b/group_vars/all.yml
index 252162d..f297bee 100644
--- a/group_vars/all.yml
+++ b/group_vars/all.yml
@@ -36,5 +36,9 @@ boot_url: https://boot.foo.sh
 logsync_publickeys:
   - ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIA7JV2Aja44X9Fy10ljY7DKXxeFAsyqPBbo5VteNrB0c root@log01.home.foo.sh
 
+# ssh public keys for backup user
+backup_publickeys:
+  - ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKdaNO9dLpI8CVx1rwGsKN45Pgiz+Btrlf2Q/nXCx4Ru root@backup02.home.foo.sh
+
 # hardcode this for now
 ansible_datacenter: home