- block
      - name: wait for new host to respond to ssh
        wait_for:
          port: 22
          host: "{{ item.openstack.public_v4 }}"
          search_regex: OpenSSH

      - name: scan the ssh key of the new host
        command: "{{ 'ssh-keyscan -t rsa ' +  item.openstack.public_v4 }}"
        register: keyscan

      - name: ensure new servers are in known_hosts
        known_hosts:
          path: /home/cideploy/.ssh/known_hosts
          name: item.openstack.public_v4
          key: "{{ keyscan.stdout }}"
      with_items: "{{ openstack_instances.results }}"