Re: [ceph-users] Multi Tenancy in Ceph RBD Cluster

t; "Ceph Statistics" is VERY broad. Are you talking IOPS, disk usage, > throughput, etc? disk usage is incredibly simple to calculate, especially > if the RBD has object-map enabled. A simple rbd du rbd_name would give you > the disk usage per RBD and return in seconds. > >

[ceph-users] Multi Tenancy in Ceph RBD Cluster

Hi Ceph Users I am relatively new to Ceph and trying to Provision CEPH RBD Volumes using Kubernetes. I would like to know what are the best practices for hosting a multi tenant CEPH cluster. Specifically i have the following questions:- - Is it ok to share a single Ceph Pool amongst multiple

[ceph-users] Importance of Stable Mon and OSD IPs

Hi Ceph Experts I am a new user of Ceph and currently using Kubernetes to deploy Ceph RBD Volumes. We our doing some initial work rolling it out to internal customers and in doing that we are using the ip of the host as the ip of the osd and mons. This means if a host goes down , we loose that

Re: [ceph-users] Importance of Stable Mon and OSD IPs

Resending in case this email was lost On Tue, Jan 23, 2018 at 10:50 PM Mayank Kumar <krmaya...@gmail.com> wrote: > Thanks Burkhard for the detailed explanation. Regarding the following:- > > >>>The ceph client (librbd accessing a volume in this case) gets > asy

Re: [ceph-users] Importance of Stable Mon and OSD IPs

ill > generate a great deal of data movement. > -Greg > > On Fri, Jan 26, 2018 at 11:50 AM Mayank Kumar <krmaya...@gmail.com> wrote: > >> Resending in case this email was lost >> >> On Tue, Jan 23, 2018 at 10:50 PM Mayank Kumar <krmaya...@gmail.com>

Re: [ceph-users] Importance of Stable Mon and OSD IPs

utational.bio.uni-giessen.de> wrote: > Hi, > > > On 01/23/2018 09:53 AM, Mayank Kumar wrote: > >> Hi Ceph Experts >> >> I am a new user of Ceph and currently using Kubernetes to deploy Ceph RBD >> Volumes. We our doing some initial work rolling it out

Re: [ceph-users] When all Mons are down, does existing RBD volume continue to work

to mons time-out ? Would that start resulting in I/O failures ? On Mon, Mar 5, 2018 at 9:44 PM Gregory Farnum <gfar...@redhat.com> wrote: > On Sun, Mar 4, 2018 at 12:02 AM Mayank Kumar <krmaya...@gmail.com> wrote: > >> Ceph Users, >> >> My question is if all

[ceph-users] When all Mons are down, does existing RBD volume continue to work

Ceph Users, My question is if all mons are down(i know its a terrible situation to be), does an existing rbd volume which is mapped to a host and being used(read/written to) continues to work? I understand that it wont get notifications about osdmap, etc, but assuming nothing fails, does the