Bug 1853418 - 'openshift-install' should not throw an x509 error if the user provides a 'baseDomain' with a trailing dot
Summary: 'openshift-install' should not throw an x509 error if the user provides a 'ba...
Alias: None
Product: OpenShift Container Platform
Classification: Red Hat
Component: Installer
Version: 4.6
Hardware: x86_64
OS: Linux
Target Milestone: ---
: 4.6.0
Assignee: Pierre Prinetti
QA Contact: weiwei jiang
Depends On:
Blocks: 1847179
TreeView+ depends on / blocked
Reported: 2020-07-02 15:38 UTC by David Roble
Modified: 2023-12-15 18:22 UTC (History)
8 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed: 2020-10-27 16:11:47 UTC
Target Upstream Version:

Attachments (Terms of Use)
SSL error viewed via Firefox (91.79 KB, image/png)
2020-07-06 19:02 UTC, David Roble
no flags Details
verified log with basedomain have dot (106.83 KB, text/plain)
2020-09-28 03:39 UTC, weiwei jiang
no flags Details

System ID Private Priority Status Summary Last Updated
Github openshift installer pull 4146 0 None closed Bug 1853418: Ignore trailing dots in baseDomain 2021-02-08 19:43:54 UTC
Red Hat Product Errata RHBA-2020:4196 0 None None None 2020-10-27 16:12:07 UTC

Comment 2 David Roble 2020-07-06 19:01:15 UTC
On the bootstrap node I can resolve the API endpoint hostname and ping the endpoint, and I am able to reproduce the SSL certificate error via the CLI using curl:

[core@interop-hwpzm-bootstrap ~]$ ping api.interop.interop.oasis.css-qe.com
PING api.interop.interop.oasis.css-qe.com ( 56(84) bytes of data.
64 bytes from api-int.interop.interop.oasis.css-qe.com ( icmp_seq=1 ttl=64 time=0.092 ms
64 bytes from api-int.interop.interop.oasis.css-qe.com ( icmp_seq=2 ttl=64 time=0.440 ms
64 bytes from api-int.interop.interop.oasis.css-qe.com ( icmp_seq=3 ttl=64 time=0.060 ms
64 bytes from api-int.interop.interop.oasis.css-qe.com ( icmp_seq=4 ttl=64 time=0.102 ms
64 bytes from api-int.interop.interop.oasis.css-qe.com ( icmp_seq=5 ttl=64 time=0.153 ms
64 bytes from api-int.interop.interop.oasis.css-qe.com ( icmp_seq=6 ttl=64 time=0.054 ms
--- api.interop.interop.oasis.css-qe.com ping statistics ---
6 packets transmitted, 6 received, 0% packet loss, time 133ms
rtt min/avg/max/mdev = 0.054/0.150/0.440/0.133 ms

[core@interop-hwpzm-bootstrap ~]$ curl https://api.interop.interop.oasis.css-qe.com:6443
curl: (60) SSL certificate problem: self signed certificate in certificate chain
More details here: https://curl.haxx.se/docs/sslcerts.html

curl failed to verify the legitimacy of the server and therefore could not
establish a secure connection to it. To learn more about this situation and
how to fix it, please visit the web page mentioned above.

Comment 3 David Roble 2020-07-06 19:02:04 UTC
Created attachment 1700064 [details]
SSL error viewed via Firefox

Comment 4 David Roble 2020-07-07 20:07:07 UTC
I believe I have found the issue.  In my 'install-config.yaml' I had the following domain config:

baseDomain: interop.oasis.css-qe.com.

Notice the trailing dot in the domain name.  I am using Google Cloud DNS for this project, and I copied the hostname I am using from the Google web interface, and it included the trailing dot.  This never jumped out at me, since the trailing dot is used in every DNS lookup behind the scenes, but is typically hidden from the user.  Web browsers and DNS utilities like 'host' and 'dig' work with the dot just fine.

At this point I think that 'openshift-install' should not throw an x509 error if the user provides a 'baseDomain' with a trailing dot, since in my view that is a valid DNS name.

Comment 5 Pierre Prinetti 2020-07-09 14:21:06 UTC
Thanks for reporting.

The installer could indeed ignore the trailing dot.

Lowering the priority as it is not considered a functional issue.

Comment 8 Anoop 2020-07-09 18:57:35 UTC
This issue was observed with 4.6. The patch you have linked here for 4.4. Not sure why this is "NOTABUG' for 4.6.

Comment 9 egarcia 2020-07-10 18:43:07 UTC
Ah, my bad. The linked code does not actually sanitize the input downstream in the installer.

Comment 14 To Hung Sze 2020-09-10 14:01:01 UTC
Note to self, to be covered in test case ocp-24404 for gcp regression.

Comment 17 weiwei jiang 2020-09-28 03:38:22 UTC
Checked with 4.6.0-0.nightly-2020-09-27-075304, and verified.

verified log is attached.

Comment 18 weiwei jiang 2020-09-28 03:39:25 UTC
Created attachment 1717173 [details]
verified log with basedomain have dot

Comment 19 weiwei jiang 2020-09-28 03:40:43 UTC
install-config.yaml which used to verify:

apiVersion: v1
baseDomain: wjiang.shiftstack.io.
- architecture: amd64
  hyperthreading: Enabled
  name: worker
  platform: {}
  replicas: 2
  architecture: amd64
  hyperthreading: Enabled
  name: master
  platform: {}
  replicas: 3
  creationTimestamp: null
  name: bmocp
  - cidr:
    hostPrefix: 23
  - cidr:
  networkType: OpenShiftSDN
    cloud: shiftstack
    computeFlavor: m4.xlarge
    externalDNS: null
    externalNetwork: public
publish: External
pullSecret: 'xxxxx'
sshKey: |
  ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCbI/Ls4UkisLh0bz/YHLdw4N8edQ0cQzN9U92DR1lgqA7/Ex0TM4UYmpqPzAaGziURiL4m1Z2s9w7HU9OsYU9c3LrUWuxXiGL7kUdnhZ0haV5AwZqQtoOF+nWToQ4rsrGNhJatH8Bh+hKOocf3LmsB8tAOuAh2WZbv7KHRFoCH/oFRNHHPR979/b2jrMJQJgMZOU5OzwM4/jNo0RfXNHQPAjdn1sJVKfsUKDCdrhwKasi/viRf/JM2f+A7BLVeIl4+92XJU21WTQp0OmzBm47vCi+k7MKNh3aEVpnGVhQOTEBdWjTT/3QGxoEDrOvzx7omPDNusXj5l84Pdeg6fmrx

Comment 22 errata-xmlrpc 2020-10-27 16:11:47 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 (OpenShift Container Platform 4.6 GA Images), and where to find the updated
files, follow the link below.

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


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