In case while running helpernode playbook from one of the helpernode servers, ensure the rest of the helpernodes are added to the inventory file.
[vmhost]
localhost ansible_connection=local
192.168.67.3 ansible_connection=ssh ansible_user=root
In case while running helpernode playbook from a remote server, ensure all helpernodes are added to the inventory file.
[vmhost]
192.168.67.2 ansible_connection=ssh ansible_user=root
192.168.67.3 ansible_connection=ssh ansible_user=root
NOTE: Ensure SSH connectivity between all the helpernodes is working fine.