docs/doc/source/security/kubernetes/utility-script-to-display-certificates.rst
Ron Stone f843d3daa4 HTTPS cert updates
General update to Security/HTTPS and Certificates Management:
- reorganization
- content updates
Implement patchset 1 review comments
Implement patchset 2 review comments

Closes-Bug: 2028184

Signed-off-by: Ron Stone <ronald.stone@windriver.com>
Change-Id: Iae75785e479c96751fb50a097eba8ed5e6069e94
2023-07-24 11:51:39 +00:00

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.. _utility-script-to-display-certificates:
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Display Certificates Installed on a System
------------------------------------------
The script **show-certs.sh** can be used to display a list of the specific
certificates present on a |prod| system with details such as expiry
date, residual time, subject, issuer and renewal behaviour (manual or
automatic).
The :command:`show-certs.sh` command has the following options:
**sudo show-certs.sh [-k] [-e <number-of-days>] [-h]**
where:
By default, :command:`show-certs.sh` command displays the platform-managed
system certificates, and (highlighted in red) certificates requiring manual
renewal, and certificates expiring within 90 days.
options:
``-k`` displays certificates found in any Kubernetes SECRETS; this may include
platform certificates and end-users' certificates.
``-e`` <number-of-days>. Changes to highlight (in red) certificates within
<number-of-days> of expiry.
``-h`` displays help
.. note::
This command can only be run locally on the active controller, in an SSH
shell.
For example:
.. code-block:: none
~(keystone_admin)]$ sudo show-certs.sh
registry.local CERTIFICATE:
-----------------------------------------------------
Renewal : Manual
Filename : /etc/ssl/private/registry-cert.crt
Subject : /CN=registry.local
Issuer : /CN=registry.local
Issue Date : Aug 31 01:43:09 2021 GMT
Expiry Date : Aug 31 01:43:09 2022 GMT
Residual Time : 341d
-----------------------------------------------------
local-openldap / deployment / system-openldap-local-certificate CERTIFICATE:
------------------------------------------
Renewal : Automatic [Managed by Cert-Manager]
Namespace : deployment
Secret : system-openldap-local-certificate
Subject : CN = system-openldap
Issuer : CN = starlingx
Issue Date : Jul 6 16:15:30 2023 GMT
Expiry Date : Oct 4 16:15:30 2023 GMT
Residual Time : 89d
… etc
For scalability reasons, in a Distributed cloud system, the Subcloud ICA
certificates that are present on a SystemController are redirected to a file.
The script displays the path to the file with a note at the end of the
displayed output.
.. code-block:: none
Subcloud ICA certificates (*-adminep-ca-certificate) are saved to
/tmp/subcloud-icas-tls-secrets.HqZSBQoUUJ.txt in order to limit the
size of the output.
For example,
.. code-block:: none
~(keystone_admin)]$ cat /tmp/subcloud-icas-tls-secrets.HqZSBQoUUJ.txt
Renewal Namespace Secret Residual Time
---------------------------------------------------------------------------------------
Automatic [Managed by Cert-Manager] dc-cert subcloud1-adminep-ca-certificate 364d
Automatic [Managed by Cert-Manager] dc-cert subcloud10-adminep-ca-certificate 364d
Automatic [Managed by Cert-Manager] dc-cert subcloud100-adminep-ca-certificate 364d
---------------------------------------------------------------------------------------