26 Sep
2019
26 Sep
'19
10:23 a.m.
On 9/26/19 5:05 AM, zhanrzh_xt(a)teamsun.com.cn wrote:
Thanks for your reply.
We don't maintain it frequently.
My confusion is whether the more monitor is more advantage for client(osd,rbdclient...)
to get clustermap.
Do All clients comunicate with one monitor of the cluster at the mean time ? If not
how client to decide to communicat with which monitor?
Clients talk with one monitor, but each client to a different Monitor.
They select the Monitor they talk to randomly.
Wido
> From: Nathan Fish
> Date: 2019-09-26 00:52
> To: 展荣臻（信泰）
> CC: ceph-users
> Subject: Re: [ceph-users] how many monitor should to deploy in a 1000+ osd cluster
> You don't need more mons to scale; but going to 5 mons would make the
> cluster more robust, if it is cheap for you to do so.
> If you assume that 1 mon rebooting for updates or maintenance is
> routine, then 2/3 is vulnerable to one failure. 4/5 can survive an
> unexpected additional failure while one is down for maintenance.
> Considering your scale, this improvement in uptime might be worthwhile.
>
> On Wed, Sep 25, 2019 at 10:26 AM 展荣臻（信泰） <zhanrzh_xt(a)teamsun.com.cn> wrote:
>>
>>
>> hi all:
>> I have a production cluster, and it had 24 hosts (528 osds,3mons) at a
former.
>> Now we want to add 36 hosts so the osd increase to 1320 .
>> does the monitor need to increase?how many numbers of monitor node is
recommended?
>> Another question is which monitor does monclient commnuicate with? And how it
decide?
>> Any suggestions are welcome!
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