CMS Clustering mechanism

[Abdelrhman Elmenyawe]

I have many questions regarding CMS Clustering.

1-Regarding the Cisco guide, you must only use the odd number for clustering 3 and a max of 5.

but for a reason in cisco dCloud "Cisco Meeting Server Advanced 3.0 Lab v1", the CMS clustered using 4 nodes (cms-db, cms1, cms2, and cms3)

2-is it a must for clustered nodes to have call bridge service enabled or not?

3-finally, CMS clustering is only used for scalable and resilience not for failover, is that's right?

[b.winter]

Hi,

1) the total number of CMS VM's is more or less independent on the those "3 or 5" numbers.

You could use a VM only for DB or Callbridge, ...

2) You could also have CMS VM's with only DB running.

You define, which service runs on which CMS.

3) Yes, that's correct.

[Abdelrhman Elmenyawe]

Hi b.winter,

thanks for your kind reply.

but I didn't get your answer to my first question, I asked how Cisco dcloud is used 4x CMS nodes in clustering CMS, however, the cisco DOC said 3 or 5 only for DB cluster.

thanks,

[b.winter]

Because you can choose, which service runs on which CMS node.

E.g. you could activate DB service only on 3 nodes, but callbridge service runs on all 4 nodes.

[Abdelrhman Elmenyawe]

OK i know but dcloud have already activated DB service on 4x nodes so I wonder is that ok or not.

https://dcloud-docs.cisco.com/c/r/dcloud-docs/sites/en_us/collaboration/cisco-meeting-server/cisco_meeting_server_advanced_3_0_lab_v1-out/b_Cisco_Meeting_Server_Advanced_3_0_Lab_v1.html?dc=rtp 

[b.winter]

Because it's a lab environment ';-)'