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Keep your AKS updated with KureD

  • January 12, 2021
  • 3 min read
Cloud and Virtualization Architect. Florent is specializing in public, hybrid, and private cloud technologies. He is a Microsoft MVP in Cloud and Datacenter Management and an MCSE in Private Cloud.
Cloud and Virtualization Architect. Florent is specializing in public, hybrid, and private cloud technologies. He is a Microsoft MVP in Cloud and Datacenter Management and an MCSE in Private Cloud.

Maybe something that you don’t know, is that Microsoft patches your nodes (every nights), when new patches are available. But, sometime, you need to reboot your nodes, to apply patches. You will find more information here: https://docs.microsoft.com/en-us/azure/aks/node-updates-kured

AKS node update and reboot process with kured

So, to automate the reboot, we will use KureD: https://github.com/kubereboot/kured

KureD is currently only available for Linux nodes.

This DeamonSet will be deployed, as pod, on each nodes of the cluster, and will check if the file /var/run/reboot-required exists. If this file exists, the node will have the status Ready, SchedulingDisabled

To deploy KureD, do the following:

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When KureD will detect the file to reboot the node, the KERNEL-VERSION will be updated:

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With this KureD feature, you will now have an infrastructure up-to-date and your security team will be happy to hear this 🙂

Hey! Found Florent’s article helpful? Looking to deploy a new, easy-to-manage, and cost-effective hyperconverged infrastructure?
Alex Bykovskyi
Alex Bykovskyi StarWind Virtual HCI Appliance Product Manager
Well, we can help you with this one! Building a new hyperconverged environment is a breeze with StarWind Virtual HCI Appliance (VHCA). It’s a complete hyperconverged infrastructure solution that combines hypervisor (vSphere, Hyper-V, Proxmox, or our custom version of KVM), software-defined storage (StarWind VSAN), and streamlined management tools. Interested in diving deeper into VHCA’s capabilities and features? Book your StarWind Virtual HCI Appliance demo today!