Openstack 13 FFU fails during external-upgrade with: ERROR! 'delegate_to' is not a valid attribute for a TaskInclude

Solution Unverified - Updated -


During FFU (Fast Forward Upgrade), when running :

$ openstack overcloud external-upgrade run --stack STACK NAME --tags ceph_systemd -e ceph_ansible_limit=overcloud-cephstorage-0

From chapter 18.2, step 3 of the FFU documentation

The command end with the error :

"ERROR! 'delegate_to' is not a valid attribute for a TaskInclude" 


  • Openstack OSP 13 latest
  • Director already in OSP 16.x with RHEL 8.2, Ansible 2.9 and ceph-ansible 3.x latest
  • Controllers in OSP13 latest, RHEL 7.9, Ansible 2.6

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