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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