4 - must scrub before tier agent can activate
8 - sudo ceph osd pool create base 4
9 - sudo ceph osd pool application enable base rados
10 - sudo ceph osd pool create cache 4
11 - sudo ceph osd tier add base cache
12 - sudo ceph osd tier cache-mode cache readproxy
13 - sudo ceph osd tier set-overlay base cache
14 - sudo ceph osd pool set cache hit_set_type bloom
15 - sudo ceph osd pool set cache hit_set_count 8
16 - sudo ceph osd pool set cache hit_set_period 3600
17 - sudo ceph osd pool set cache target_max_objects 250