Minimum requirements for ceph monitors?

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Dear Ceph-users,

 

I was wondering if I could use a raspberry PI exclusively for ceph mons only. Well, it doesn’t have to be a raspberry pi of course, but some cheap, no fan, Athlon like server with 100Mps Ethernet connection in a 10 node 4Gb NIC per server ceph cluster. Just a thought.

 

What are the requirements for a ceph-mon only node anyway? Can I run them without harddisks (PXE boot and a lot of ram for example)? And what happens if I would add 2 monitors in my cluster, that totals up to 3?

 

Does a ceph-mon node need a second NIC team for cluster traffic only as well?

 

I hope there are some guide lines on this. Thanks in advance!

 

Regards,

Johannes

 

 



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