On 06/20/2012 11:20 AM, Stefan Priebe - Profihost AG wrote:
Am 20.06.2012 11:13, schrieb Wido den Hollander:
On 06/20/2012 10:59 AM, Stefan Priebe - Profihost AG wrote:
Hello list,
i've some problems to find the correct combination of ceph.conf,
/etc/hosts for the init script to work correctly.
My systems are named:
ssdstor000i
ssdstor001i
ssdstor002i
What does hostname | cut -d . -f 1 say?
It says ssdstor000i as the machine defaults to it's public IP.
Whouldn't it make sense to go through all aliases set in /etc/hosts
which point to a local IP?
Ceph is not really intended to work with public or private IP's.
The idea is that you have a Layer 2 or Layer 3 network over which all
the daemons and clients connect over a routable network, peer-to-peer,
no NAT in it's way.
You can however have a seperate "osd" network where the OSD's
interconnect for their replication traffic, but that has nothing to do
with the hostnames.
You can take a look at the configuration options "public_addr" and
"cluster_addr" for these.
Besides that, Ceph would run on a "private" network. If you have KVM
hosts these will have a WAN connection over which they (and their VM's)
communicate with the outside world and over a dedicated NIC the host
communicates with the Ceph cluster.
I'd recommend sticking with 1 IP-Address for each OSD, keep it simple.
Wido
Stefan
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