Bug 1769985

Summary:	etcd: server certs should support client usage
Product:	OpenShift Container Platform	Reporter:	Sam Batschelet <sbatsche>
Component:	Etcd	Assignee:	Sam Batschelet <sbatsche>
Status:	CLOSED ERRATA	QA Contact:	Mike Fiedler <mifiedle>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	4.3.0	CC:	mfojtik, mifiedle, sople
Target Milestone:	---
Target Release:	4.3.0
Hardware:	Unspecified
OS:	Unspecified
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Clones:	1769992 (view as bug list)		Environment:
Last Closed:	2020-01-23 11:11:43 UTC	Type:	Bug
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Bug Blocks:	1769992

Description Sam Batschelet 2019-11-07 20:49:06 UTC

Description of problem: openshift/kubecsr repo is the canonical home for etcd cert signer. PR #22 added client usage and was merged upstream and is part of master downstream.[1] 

[1]: https://github.com/openshift/kubecsr/commit/aad75d333646da657e788db93f2ff75da850b542#diff-654ba8df3be94fe94c9404a7727d1fa2

But this was never backported to the openshift-4.1, openshift-4.2 or openshift-4.3. With etcd 3.3.10 the result is an error message during startup 

> 2019-11-07 14:18:08.592903 I | embed: rejected connection from "127.0.0.1:32972" (error "tls: failed to verify client's certificate: x509: certificate specifies an incompatible key usage", ServerName "")


In 3.3.17 we see many more of these errors and the result will be unnecessary bugs and spammy logs. 

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


How reproducible:
always

Steps to Reproduce:
1.
2.
3.

Actual results:


Expected results: Backport is complete


Additional info:

Comment 2 Mike Fiedler 2019-11-15 16:08:23 UTC

Verified on 4.3.0-0.nightly-2019-11-13-233341

Server certs work well for command line client:

sh-4.2# etcdctl --endpoints 10.0.0.6:2379,10.0.0.3:2379 --cacert=/etc/ssl/etcd/ca.crt --cert=/etc/ssl/etcd/system:etcd-server:etcd-0.mffiedler1114.qe.gcp.devcluster.openshift.com.crt  --key=/etc/ssl/etcd/system:etcd-server:etcd-0.mffiedler1114.qe.gcp.devcluster.openshift.com.key endpoint status
10.0.0.6:2379, 414b83dc8591f685, 3.3.17, 255 MB, false, 125, 634130
10.0.0.3:2379, 596ac98681085db0, 3.3.17, 257 MB, true, 125, 634130

Comment 4 errata-xmlrpc 2020-01-23 11:11:43 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-2020:0062