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

Hi, On 02/01/2018 07:21 AM, Mayank Kumar wrote: Thanks Gregory and Burkhard In kubernetes we use rbd create  and rbd map/unmap commands. In this perspective are you referring to rbd as the client or after the image is created and mapped, is there a different client running inside the

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

Thanks Gregory and Burkhard In kubernetes we use rbd create and rbd map/unmap commands. In this perspective are you referring to rbd as the client or after the image is created and mapped, is there a different client running inside the kernel that you are referring to which can get osd and mon

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

Ceph assumes monitor IP addresses are stable, as they're the identity for the monitor and clients need to know them to connect. Clients maintain a TCP connection to the monitors while they're running, and monitors publish monitor maps containing all the known monitors in the cluster. These are

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 wrote: > Thanks Burkhard for the detailed explanation. Regarding the following:- > > >>>The ceph client (librbd accessing a volume in this case) gets > asynchronous notification from the

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

Thanks Burkhard for the detailed explanation. Regarding the following:- >>>The ceph client (librbd accessing a volume in this case) gets asynchronous notification from the ceph mons in case of relevant changes, e.g. updates to the osd map reflecting the failure of an OSD. i have some more

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

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 to internal customers and in doing that we are using the ip of the host as the ip of the osd and

[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