Hi Gary,

Have query regarding quorum selection when raft servers are external to the 
OpenSAF Cluster

In the document we are saying  "The consensus service uses quorum to prevent 
state changes in network partitions that don't include more than half of the 
nodes in the cluster"

=> This is possible if the raft server is installed on the OpenSAF Cluster 
Nodes, as Raft decides which partition has more no of nodes.
but in the case where raft servers run on external nodes outside of the OpenSAF 
Cluster, how the quorum is decided


=> If the Raft Servers are external to OpenSAF Cluster, do we need to make any 
configuration so that etcd client on the OpenSAF nodes
communicates with Raft Leader
Also it will be good if we give some details about how to install and configure 
raft(raft servers within and external to the opensaf cluster)

Thanks,
Ravi

-----Original Message-----
From: Gary Lee [mailto:gary....@dektech.com.au] 
Sent: Friday, January 26, 2018 11:28 AM
To: Hans Nordeb├Ąck <hans.nordeb...@ericsson.com>; Anders Widell 
<anders.wid...@ericsson.com>; Ravi Sekhar Reddy Konda 
<ravisekhar.ko...@oracle.com>
Cc: opensaf-devel@lists.sourceforge.net
Subject: Review Request for doc: update overview PR for split brain prevention 
with consensus service [#64]

Hi

I have updated the OpenSAF Overview PR document for ticket #64.

Please have a look.

https://urldefense.proofpoint.com/v2/url?u=https-3A__sourceforge.net_p_opensaf_tickets_-5Fdiscuss_thread_0d47d4b9_5489_attachment_OpenSAF-5FOverview-5FPR.odt&d=DwICaQ&c=RoP1YumCXCgaWHvlZYR8PZh8Bv7qIrMUB65eapI_JnE&r=xBh_3WtlS1YjXd3Bui_nVjh5qwhU2UamdAhSfqynLU4&m=xCEIb5x0gLGfoZW5uOWz23MZa6HzmOa6Vhywz3WeIQs&s=RF6RsX3xhby4k4PnwA8WEXCWKg0JbFyGNgaiery9iDk&e=

Thanks
Gary


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