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HCL Sametime® Administration Guide 12.0.1
Securing
This section provides information on securing your HCL Sametime environments.
Replacing the TLS certificates for Web Chat and Meetings
The Sametime server is pre-configured with a self-signed certificate. You can replace the self-signed certificate with a third party certificate.
Updating the TLS certificates on Kubernetes
In Kubernetes, TLS certificates are contained within a secret called tls-secret.

HCL Sametime® Administration Guide 12.0.1
- Accessibility features for Sametime
  Accessibility features help users who have a disability, such as restricted mobility or limited vision, use information technology products successfully. HCL® strives to provide products with usable access for everyone.
- What's new
  HCL Sametime and HCL Sametime Premium 12.0.1 provide many new features, enhancements and fixes to servers and clients. Additional releases to version 12.0.1 also provides updates to the product.
- Planning
  This section describes the system requirements and server configurations needed for HCL Sametime and HCL Sametime Premium.
- Installing
  This section provides information on installing the servers for Sametime and Sametime Premium.
- Configuring
  This section provides information on configuring the HCL Sametime server. Configuration tasks are dependent on the deployment environment.
- Securing
  This section provides information on securing your HCL Sametime environments.
  - Encryption usage in Sametime
    HCL Sametime uses several types of encryption to protect data.
  - Securing connections
    The various connections to Sametime can be secured using TLS.
  - Enabling Single Sign-on
    The HCL Sametime server installer enables required JSON Web Token (JWT) authentication. Additionally, the Sametime server supports Security Assertion Markup Language (SAML) and Lightweight Third Party Authentication (LTPA) Single Sign-on (SSO).
  - Setting up TLS for the Mongo database
    You can update the MongoDB connection with the Sametime server to encrypt data flowing between the Sametime server and a TLS-enabled MongoDB. This step is optional but is recommended for multi-Kubernetes-cluster deployments.
  - Replacing the TLS certificates for Web Chat and Meetings
    The Sametime server is pre-configured with a self-signed certificate. You can replace the self-signed certificate with a third party certificate.
    - Updating the TLS certificates on Docker
    - Updating the TLS certificates on Kubernetes
      In Kubernetes, TLS certificates are contained within a secret called tls-secret.
  - Applying Let's Encrypt certificates
    This topic describes how to replace the self-signed certificate with a third-party certificate.
- Administering
  This section provides information on administering on Sametime environments.
- Troubleshooting
  This section provides information on troubleshooting and supporting Sametime environments.
- Uninstalling Sametime
  In the event that Sametime must be removed, follow the procedure for the platform that Sametime is installed on.
- Migrating and Upgrading
  This section provides information on migrating data from an earlier release to Sametime 12.
- Notices

Updating the TLS certificates on Kubernetes

In Kubernetes, TLS certificates are contained within a secret called tls-secret.

Before you begin

Ensure that you have the certificate and private key to be used.

About this task

To update the certificate on Kubernetes, first you must delete the existing secret and create it again with the new certificate information.

Procedure

Run the following command to verify if the secret currently exists.
```
kubectl get secrets
```
If the tls-secret exists, delete it.
```
kubectl delete secret tls-secret
```
Create a new tls-secret secret with the new certificate and private key.
```
create secret tls tls-secret --key tls.key --cert tls.crt
```
Where the value for key is the private key file and cert is the certificate file.
Verify
```
kubectl get secret tls-secret -o yaml
```

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