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Bug 1414537

Summary:	[3.4] Node certificate serials are not unique
Product:	OpenShift Container Platform	Reporter:	Andrew Butcher <abutcher>
Component:	Installer	Assignee:	Andrew Butcher <abutcher>
Status:	CLOSED ERRATA	QA Contact:	Gaoyun Pei <gpei>
Severity:	urgent	Docs Contact:
Priority:	unspecified
Version:	3.4.0	CC:	aos-bugs, jialiu, jokerman, mmccomas
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:
Clones:	1414542 1414570 (view as bug list)		Environment:
Last Closed:	2017-01-31 21:10:52 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:
Bug Depends On:
Bug Blocks:	1414542, 1414570

Description Andrew Butcher 2017-01-18 19:10:04 UTC

Description of problem:

Node certificates created by openshift-ansible have duplicate serial numbers. This is a concern for ipsec encryption https://docs.openshift.com/container-platform/3.4/admin_guide/ipsec.html which requires that the certificate serials are unique.

Version-Release number of selected component (if applicable):
atomic-openshift-utils-3.4.44-1.git.0.efa61c6.el7.noarch.rpm
openshift-ansible-3.4.44-1.git.0.efa61c6.el7.noarch.rpm
openshift-ansible-playbooks-3.4.44-1.git.0.efa61c6.el7.noarch.rpm
openshift-ansible-roles-3.4.44-1.git.0.efa61c6.el7.noarch.rpm

How reproducible:
Always.

Steps to Reproduce:
1. Install multi-node cluster using openshift-ansible.
2. Check certificate serial numbers for node certificates.

# openssl x509 -in /etc/origin/node/system\:node\:node1.example.com.crt -serial -noout
serial=14
# openssl x509 -in /etc/origin/node/server.crt -serial -noout
serial=15

# openssl x509 -in /etc/origin/node/system\:node\:node2.example.com.crt -serial -noout
serial=14
# openssl x509 -in /etc/origin/node/server.crt -serial -noout
serial=15

# openssl x509 -in /etc/origin/node/system\:node\:node3.example.com.crt -serial -noout
serial=14
# openssl x509 -in /etc/origin/node/server.crt -serial -noout
serial=15

Actual results:
Node certificate serial numbers are not unique.

Expected results:
Node certificate serial numbers are unique.

# openssl x509 -in /etc/origin/node/system\:node\:node1.example.com.crt -serial -noout
serial=0F
# openssl x509 -in /etc/origin/node/server.crt -serial -noout
serial=12

# openssl x509 -in /etc/origin/node/system\:node\:node2.example.com.crt -serial -noout
serial=10
# openssl x509 -in /etc/origin/node/server.crt -serial -noout
serial=13

# openssl x509 -in /etc/origin/node/system\:node\:node3.example.com.crt -serial -noout
serial=11
# openssl x509 -in /etc/origin/node/server.crt -serial -noout
serial=14

Additional info:

Comment 2 Gaoyun Pei 2017-01-19 06:07:16 UTC

Verify this bug with openshift-ansible-3.4.55-1.git.0.9cb1f40.el7.noarch.rpm

[root@ip-172-18-8-91 ~]# oc get node
NAME                            STATUS                     AGE
ip-172-18-12-248.ec2.internal   Ready                      2h
ip-172-18-15-176.ec2.internal   Ready                      2h
ip-172-18-4-162.ec2.internal    Ready                      2h
ip-172-18-8-91.ec2.internal     Ready,SchedulingDisabled   2h

Check certificate serial numbers for each node's certificates
[root@ip-172-18-8-91 ~]# openssl x509 -in /etc/origin/node/system\:node\:ip-172-18-8-91.ec2.internal.crt -serial -noout
serial=0B
[root@ip-172-18-8-91 ~]# openssl x509 -in /etc/origin/node/server.crt -serial -noout
serial=0F


[root@ip-172-18-15-176 ~]# openssl x509 -in /etc/origin/node/system\:node\:ip-172-18-15-176.ec2.internal.crt -serial -noout
serial=0C
[root@ip-172-18-15-176 ~]# openssl x509 -in /etc/origin/node/server.crt -serial -noout
serial=10


[root@ip-172-18-12-248 ~]# openssl x509 -in /etc/origin/node/system\:node\:ip-172-18-12-248.ec2.internal.crt -serial -noout
serial=0D
[root@ip-172-18-12-248 ~]# openssl x509 -in /etc/origin/node/server.crt -serial -noout
serial=11


[root@ip-172-18-4-162 ~]# openssl x509 -in /etc/origin/node/system\:node\:ip-172-18-4-162.ec2.internal.crt -serial -noout
serial=0E
[root@ip-172-18-4-162 ~]# openssl x509 -in /etc/origin/node/server.crt -serial -noout
serial=12

Comment 4 errata-xmlrpc 2017-01-31 21:10:52 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-2017:0224