Bug 1822924

Summary:	etcd backup script request snapshot backup from a single endpoint not multiple
Product:	OpenShift Container Platform	Reporter:	Suresh Kolichala <skolicha>
Component:	Etcd	Assignee:	Suresh Kolichala <skolicha>
Status:	CLOSED ERRATA	QA Contact:	ge liu <geliu>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	4.5
Target Milestone:	---
Target Release:	4.5.0
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	Cause: The backup script was invoked with all ETCD endpoints. Consequence: This was overlooked in etcd 3.3.x versions, but in etcd 3.4.x, this invocation results in failure. Fix: Set the ETCDCTL_ENDPOINTS to a single member. Result: backups are successfully taken.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-07-13 17:26:59 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Suresh Kolichala 2020-04-10 14:05:27 UTC

Description of problem:
By default, etcdctl is invoked with ETCDCTL_ENDPOINTS set to all etcd members. However, when invoking snapshot backup, it should be invoked with a single endpoint. This is strictly enforced in the new etcd versions of 3.4.x.

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1. Login to one of the master hosts
2. Attempt to take a backup by invoking cluster-backup.sh

Actual results:
In 4.5, where etcd is bumped to use 3.4.7, it fails with an error:
Error: snapshot must be requested to one selected node, not multiple [https://10.0.145.58:2379 https://10.0.134.79:2379 https://10.0.137.186:2379 https://10.0.5.140:2379]

Expected results:
snapshot db and kube resources are successfully saved to backup directory specified.

Additional info:

Comment 7 errata-xmlrpc 2020-07-13 17:26:59 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2020:2409