Bug 1703703

Summary:	etcd: adjusting runtime configurations will result in MCO rebooting node
Product:	OpenShift Container Platform	Reporter:	Sam Batschelet <sbatsche>
Component:	Etcd	Assignee:	Sam Batschelet <sbatsche>
Status:	CLOSED CURRENTRELEASE	QA Contact:	ge liu <geliu>
Severity:	urgent	Docs Contact:
Priority:	unspecified
Version:	4.1.0	CC:	akamra, akrzos, gblomqui
Target Milestone:	---
Target Release:	4.1.0
Hardware:	Unspecified
OS:	Unspecified
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Last Closed:	2019-05-14 10:29:39 UTC	Type:	Bug
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Embargoed:

Description Sam Batschelet 2019-04-27 17:56:26 UTC

Description of problem: etcd has various runtime configurations. Currently, the only way to adjust these configurations is to manipulate the etcd-member.yaml for the static POD. But by doing so because this config is monitored by MCO will result in eventually restarting the node.


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


How reproducible:


Steps to Reproduce:
1. adjust runtime configuration
2.
3.

Actual results: etcd picks up runtime configuration changes and then MCO reboots nodes


Expected results: etcd picks up runtime configuration


Additional info:

Comment 6 ge liu 2019-05-06 10:52:19 UTC

hello Sam, I found that etcd-member.yml have been managed by machineconfig, do you have any suggestion how to verify this bug? thx

Comment 7 ge liu 2019-05-14 08:47:02 UTC

generate-etcd-conf.sh works well, but its pre-requirist is install 'urlencode'. I'm not sure if it's acceptable for customer, or we need to doc it, anyway, this way looks like have not problem.

# urlencode
bash: urlencode: command not found...
Install package 'gridsite-clients' to provide command 'urlencode'? [N/y] y

# ./generate-etcd-conf.sh etcd.conf.new etcd.conf.machineconfig
MachineConfig is now available etcd.conf.machineconfig
# oc get machineconfig
NAME                                                        GENERATEDBYCONTROLLER      IGNITIONVERSION   CREATED
00-master                                                   4.1.0-201905091432-dirty   2.2.0             25h
..............
99-etcd-conf                                                                           2.2.0             7s