On 05/12/2017 02:49 PM, Алексей Усов wrote:
Usov,
Could someone, please, tell me how do I restart all daemons in a
cluster if I make changes in ceph.conf, if it's needed indeed? Since
enterprise-scale ceph clusters usually tend to comprise of hundreds of
OSDs, I doubt one must restart the entire cluster by hand or use some
sort of external orchestrating tool - there must be a centralized
solution in ceph itself.
That is where 'ceph tell' is for. You can inject the new settings in the
'running configuration'. For example:
ceph tell osd.* injectargs '--osd_scrub_begin_hour 0'
ceph tell osd.* injectargs '--osd_scrub_end_hour 24'
I always change the config settings in our config management system
(puppet) first, and after that, inject them with 'ceph tell'
--
With regards,
Richard Arends.
Snow BV / http://snow.nl
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