This ceph-upgrade is rather straight-forward. Basicly follow cephs own guide HERE.
- Set the following key in hiera:
ceph::params::release: 'octopus'
- apt-get dist-upgrade the ceph-mons
- Restart ceph-mon services as you go.
- Upgrade storage-nodes
- Restart ceph-osd's on one node at a time.
- Upgrade radosgw's
- Reboot the radsgw's afterwards.