On 08/12/2013 06:49 PM, Dmitry Postrigan wrote:
Hello community,
I am currently installing some backup servers with 6x3TB drives in them. I
played with RAID-10 but I was not
impressed at all with how it performs during a recovery.
Anyway, I thought what if instead of RAID-10 I use ceph? All 6 disks will be
local, so I could simply create
6 local OSDs + a monitor, right? Is there anything I need to watch out for in
such configuration?
I mean, you can certainly do that. 1 mon and all OSDs on one server is
not particularly fault-tolerant, perhaps, but if you have multiple such
servers in the cluster, sure, why not?
Another thing. I am using ceph-deploy and I have noticed that when I do this:
ceph-deploy --verbose new localhost
the ceph.conf file is created in the current folder instead of /etc. Is this
normal?
Yes. ceph-deploy also distributes ceph.conf where it needs to go.
Also, in the ceph.conf there's a line:
mon host = ::1
Is this normal or I need to change this to point to localhost?
You want to configure the machines such that they have resolvable 'real'
IP addresses:
http://ceph.com/docs/master/start/quick-start-preflight/#hostname-resolution
Thanks for any feedback on this.
Dmitry
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--
Dan Mick, Filesystem Engineering
Inktank Storage, Inc. http://inktank.com
Ceph docs: http://ceph.com/docs
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