safest way to remove a host from Mimic

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Hi guys,

I need to remove a host (osd server) from my Ceph Mimic.  First I started to remove every OSD drive one by one with 'ceph osd out' and then 'ceph osd purge'.  After all the drives will be removed from the crush map, I will still have the host empty, without any drive, and with the crush weight = 0.

What is the recommend way to remove the host from Ceph :

- ceph-deploy purge <hostname>

- ceph-deploy purgedata <hostname>

- ceph osd crush remove <hostname>

  ?

Thanks.

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