Hello everybody, found intresting thing: for some reason ALL the monitors crash when I try to rbd map on client host. here is my pool: root@ceph1:~# ceph osd pool ls iotest Here is my rbd in this pool: root@ceph1:~# rbd ls -p iotest test1 this is a client creds to connect to this pool: [client.iotest] key = AQASVfZm5bPGLBAAXyPWqJvNMBsXsJQcFrSAhg== caps mgr = "profile rbd pool=iotest" caps mon = "profile rbd" caps osd = "profile rbd pool=iotest" This is rbmap file on a client host: root@node-stat:/etc/ceph# cat rbdmap # RbdDevice Parameters #poolname/imagename id=client,keyring=/etc/ceph/ceph.client.keyring iotest/test1 id=iotest,keyring=/etc/ceph/ceph.client.iotest.keyring So, when I press Enter on command rbd map iotest/test1 --id iotest in the same moment ALL the mons go down. I pul log on pastebin as it is quite long https://pastebin.com/iCr8pY1r All the hints are appreciated. Thanks in advance.