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@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! _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io