Bug 1881941

Summary: RHGS Installation Guide: Document the need for three sites for multi-site clusters
Product: [Red Hat Storage] Red Hat Gluster Storage Reporter: Patric Uebele <puebele>
Component: doc-Installation_GuideAssignee: Disha Walvekar <dwalveka>
doc-Installation_Guide sub component: Default QA Contact: Prasanth <pprakash>
Status: CLOSED CURRENTRELEASE Docs Contact:
Severity: high    
Priority: high CC: asriram, dwalveka, pprakash, rhs-bugs, storage-doc
Version: rhgs-3.5Keywords: ZStream
Target Milestone: ---   
Target Release: RHGS 3.5.z Batch Update 3   
Hardware: Unspecified   
OS: Unspecified   
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Last Closed: 2021-01-11 08:57:51 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Blocks: 1822639    

Description Patric Uebele 2020-09-23 12:43:19 UTC 
Describe the issue: While the installation guides is clear about the minimum of three nodes for production use, it's note explicitly documented that for multi-site clusters, an odd number of sites are required.

Describe the task you were trying to accomplish:

Suggestions for improvement: Add the sentence below to the "Important" note in 1.2 :
"For quorum reasons, multi-site clusters with synchronous replication require an odd number of sites (min. of three) to survive a site failure without manual intervention."

Document URL: https://access.redhat.com/documentation/en-us/red_hat_gluster_storage/3.5/html-single/installation_guide/index#sect-Prerequisites1 

Chapter/Section Number and Title: 1.2. Prerequisites

Product Version:

Environment Details:

Any other versions of this document that also needs this update:

Additional information: