Re: Very Basic question

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Hello! 

Only 1 monitor instance? It won't work at most cases. 
Make more and ensure quorum to reach survivalability. 

Regards, Silenkov Artem 
---
artem.silenkov@xxxxxxxxx

2014-11-13 20:02 GMT+03:00 Luca Mazzaferro <luca.mazzaferro@xxxxxxxxxx>:
Dear Users,
I followed the instruction of the storage cluster quick start here:

http://ceph.com/docs/master/start/quick-ceph-deploy/

I simulate a little storage with 4 VMs ceph-node[1,2,3] and an admin-node.
Everything worked fine until I shut down the initial monitor node (ceph-node1).

Also with the other monitors on.

I restart the ceph-node1 but the ceph command (running from ceph-admin) fails after hanging for 5 minutes.
with this exit code:
2014-11-13 17:33:31.711410 7f6a5b1af700  0 monclient(hunting): authenticate timed out after 300
2014-11-13 17:33:31.711522 7f6a5b1af700  0 librados: client.admin authentication error (110) Connection timed out

If I go to the ceph-node1 and restart the services:

[root@ceph-node1 ~]# service ceph status
=== mon.ceph-node1 ===
mon.ceph-node1: running {"version":"0.80.7"}
=== osd.2 ===
osd.2: not running.
=== mds.ceph-node1 ===
mds.ceph-node1: running {"version":"0.80.7"}
[root@ceph-node1 ~]# service ceph status
=== mon.ceph-node1 ===
mon.ceph-node1: running {"version":"0.80.7"}
=== osd.2 ===
osd.2: not running.
=== mds.ceph-node1 ===
mds.ceph-node1: running {"version":"0.80.7"}

I don't understand how to properly restart a node.
Can anyone help me?
Thank you.
Cheers.

    Luca





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