Comment 8 for bug 1718701

OK so this is a bit narly; cradox does not work for me with 10.2.7, 10.2.9 or 12.2.0:

Oct 05 13:27:00 juju-2758f7-xenial-pike-36 gnocchi.metricd[16316]: /build/ceph-ttzfGl/ceph-12.2.0/src/common/ceph_crypto.cc: In function 'void ceph::crypto::init(CephContext*)' thread 7fe1b905c700 time 2017-10-05 13:27:00.438757
Oct 05 13:27:00 juju-2758f7-xenial-pike-36 gnocchi.metricd[16316]: /build/ceph-ttzfGl/ceph-12.2.0/src/common/ceph_crypto.cc: 71: FAILED assert(crypto_context != __null)

For snaps specifically I'm having trouble getting the pybind built python module to resolve the underlying rados2 library correctly (but that's snap specific).