Installing the Client Tools
In this lab you will install the command line utilities required to complete this tutorial: openssl, and kubectl.
Install OpenSSL
openssl command line utility will be used to provision a PKI Infrastructure and generate TLS certificates.
Download and install openssl from the official release binaries:
Linux
sudo apt-get install openssl
Verification
Verify openssl version 3.x or higher is installed:
openssl version
output
OpenSSL 3.6.0 1 Oct 2025 (Library: OpenSSL 3.6.0 1 Oct 2025)