docs/doc/source/security/kubernetes/https-access-overview.rst

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.. _https-access-overview:
==========================================
HTTPS and Certificates Management Overview
==========================================
Certificates are required for secure HTTPS access and authentication on |prod|
platform.
This table lists all the platform certificates, and indicates which
certificates are automatically created/renewed by the system versus which
certificates must be manually created/renewed by the system administrator.
Platform certificates that are associated with optional platform components are
only present if the optional platform component is configured (e.g. |OIDC|).\
Platform certificates that are associated with Distributed Cloud are only
present on |DC| SystemController systems or |DC| Subclouds.
.. table::
:widths: auto
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| Certificate | Auto Created | Renewal Status |
+===========================================================+=============================================================================+========================================================================================================+
| **Etcd:** |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| etcd Root CA certificate | Yes | NOT AUTO-RENEWED; Default expiry is set at 10 years |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| etcd server certificate | Yes | auto-renewed by cron job |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| etcd client certificate | Yes | auto-renewed by cron job |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| kube-apiserver's etcd client certificate | Yes | auto-renewed by cron job |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| **Kubernetes:** |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| Kubernetes Root CA Certificate | Yes | NOT AUTO-RENEWED; Default expiry is set at 10 years; MUST be renewed via CLI. |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| Cluster Admin client certificate used by kubectl | Yes | auto-renewed by cron job |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| kube-controller-manager client certificate | Yes | auto-renewed by cron job |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| kube-scheduler client certificate | Yes | auto-renewed by cron job |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| kube-apiserver server certificate | Yes | auto-renewed by cron job |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| kube-apiserver's kubelet client certificate | Yes | auto-renewed by cron job |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| kubelet client certificate | Yes | auto-renewed by kubelet. Feature enabled by default |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| front-proxy-client | Yes | front-proxy-client: auto-renewed by cron job |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| front-proxy-ca | Yes | front-proxy-ca: NOT AUTO-RENEWED; Default expiry is set at 10 years |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| **system-local-ca** | Yes | NOT AUTO-RENEWED. MUST be renewed via CLI |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| **OpenLDAP Server Certificate** | Yes | auto-renewed by system |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| **StarlingX REST API & HORIZON Server Certificate** | Yes (But the auto-created certificate is self-signed and should be changed) | auto-renewed if configured with cert-manager; |
| | | NOT AUTO-RENEWED if configured with :command:`system certificate-install ..`, must be renewed via CLI |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| **Local Registry Server Certificate** | Yes (But the auto-created certificate is self-signed and should be changed) | auto-renewed if configured with cert-manager; |
| | | NOT AUTO-RENEWED if configured with :command:`system certificate-install ..`, must be renewed via CLI |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| **OIDC:** |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| OIDC Client and Dex Server Server Certificate | No | auto-renewed if configured with cert-manager; |
| | | NOT AUTO-RENEWED if configured with an externally generated certificate. MUST be renewed via CLI. |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| OIDC Client and Dex Server CA certificate | No | NOT AUTO-RENEWED. MUST be renewed via CLI. |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| OIDC Remote WAD CA Certificate | No | NOT AUTO-RENEWED. MUST be renewed via CLI. |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| **Vault:** |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| Vault Server Certificate | Yes | NOT AUTO-RENEWED; MUST be renewed via CLI. |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| Vault Root CA certificate | Yes | NOT AUTO-RENEWED; MUST be renewed via CLI. |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| **Portieris:** |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| Portieris Server Certificate | Yes | Auto renewed by cert-manager; BUT CUSTOMER MUST restart Portieris after the certificate is renewed |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| Portieris remote registry and notary server CA Certificate| No | NOT AUTO-RENEWED; CUSTOMER MUST renew via CLIs |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| **DC Admin Endpoints:** |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| Root CA DC Admin Endpoint CA Certificate | Yes | auto-renewed |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| Intermediate CA DC Admin Endpoint CA Certificate | Yes | auto-renewed |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| DC Admin Endpoint Server Certificate | Yes | auto-renewed |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
| **System trusted CA Certificates** | No | NOT AUTO-RENEWED as these are certificates that are not necessarily owned by the platform |
+-----------------------------------------------------------+-----------------------------------------------------------------------------+--------------------------------------------------------------------------------------------------------+
Where:
- Auto created: the certificate is generated during system deployment or
triggered by certain operations.
- Renewal Status: whether the certificate is renewed automatically by the system
when expiry date approaches.
The specific certificates, and details such as expiration date, that are
present on a |prod| system can be displayed with a local script, :command:`sudo
show-certs.sh`, see :ref:`utility-script-to-display-certificates`.
|prod| monitors the installed certificates on the system by raising alarms for
expired certificates and certificates that will expire soon, see
:ref:`alarm-expiring-soon-and-expired-certificates-baf5b8f73009`.
The following sections provide details on managing these certificates.
- :ref:`StarlingX REST API Applications and the Web Administration Server Certificate <starlingx-rest-api-applications-and-the-web-administration-server>`
- :ref:`Kubernetes Certificates <kubernetes-certificates-f4196d7cae9c>`
- :ref:`Local Registry Server Certificates <security-install-update-the-docker-registry-certificate>`
- :ref:`System Trusted CA Certificates <add-a-trusted-ca>`
For further information about certificates expiration date or other certificates
information, see :ref:`Display Certificates Installed on a System <utility-script-to-display-certificates>`.
In addition, |prod| monitors the installed certificates on the system by raising
alarms for expire-soon certificates and for expired certificates on the system,
see :ref:`Expiring-Soon and Expired Certificate Alarms
<alarm-expiring-soon-and-expired-certificates-baf5b8f73009>`.