10 copies for a replicated setup seems... excessive. The rules are quite simple, for example rule 1 could be: take default choose firstn 5 type datacenter # picks 5 datacenters chooseleaf firstn 2 type host # 2 different hosts in each datacenter emit rule 2 is the same but type region and first 3 and for rule3 you can just start directly in the selected dc (take dc1). -- Paul Emmerich Looking for help with your Ceph cluster? Contact us at https://croit.io croit GmbH Freseniusstr. 31h 81247 München www.croit.io Tel: +49 89 1896585 90 Am So., 2. Dez. 2018 um 17:44 Uhr schrieb Vasiliy Tolstov <v.tolstov@xxxxxxxxx>: > > Hi, i need help with crushmap > I have > 3 regions - r1 r2 r3 > 5 dc - dc1 dc2 dc3 dc4 dc5 > dc1 dc2 dc3 in r1 > dc4 in r2 > dc5 in r3 > > Each dc have 3 nodes with 2 disks > I need to have 3 rules > rule1 to have 2 copies on two nodes in each dc - 10 copies total failure domain dc > rule2 to have 2 copies on two nodes in each region - 6 copies total failure domain region > rule3 to have 2 copies on two nodes in dc1 failure domain node > > How looks crushmap in this case for replicated type? > Thanks. > > > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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