The OpenShift Machine Configuration Operator applies configuration changes to to nodes using a syntax called Ignition, but managing base64 encoded text can be challenging. What if I told you that you can use plain text and normal files?
This post demonstrates how to properly generate kubeconfig files for OpenShift ServiceAccounts, enabling secure token-based authentication and TLS connections. You will learn how to create ServiceAccounts, generate time-limited tokens, bundle CA certificates, and package everything into a distributable kubeconfig file that can be stored as a Secret for download.
Some workloads require the use of VLAN interfaces in virtual machines. VMware terms this feature “Virtual Guest Tagging” or “VLAN Guest Tagging” while OpenStack calls it “VLAN-aware instances”. See how OpenShift Virtualization can pass 802.1q trunks to VMs using a traditional Linux Bridge interface.
Accessing the details of the software defined networking features of OpenShift can be helpful for deeper troubleshooting or enhanced understanding. You’ll not find a full explanation of Open Virtual Network or OVN-Kubernetes here, but you will learn how to quickly peer inside and investigate their inner workings.
Copyright (c) 2021, Dale Bewley; all rights reserved.
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