As Nathan describes, this information is maintained in the database on mon / monitor nodes. One always runs multiple mons in production, at least 3 and commonly 5. Each has a full copy of everything, so that the loss of a node does not lose data or impact operation. BTW, it’s Ceph not CEPH ;)
On Mar 12, 2021, at 8:17 AM, Nathan Fish <lordcirth@gmail.com> wrote:
Every mon stores the crush map in /var/lib/ceph, I believe.
On Fri, Mar 12, 2021 at 10:53 AM Ed Kalk <ekalk@socket.net> wrote:
Hello,
I have been googling for the answer to this and not found it. Does anyone know this?
Where does CEPH store the crush map and the critical cluster metadata? What prevents a loss of this metadata when a node is lost?
-- Thank you for your time,
Edward H. Kalk IV Information Technology Dept. Server Specialist Datacenter Virtualization and Storage Systems Socket Telecom, LLC. 2703 Clark Lane Columbia, MO 65202 573-817-0000 or 800-socket3 X218 _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io
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