Upgrade the CN-Series Firewall

Upgrade the CN-Series firewalls in your Kubernetes cluster.
The CN-MGMT pods (management plane) and the CN-NGFW pods (data plane) must always be on the same PAN-OS version. There are two ways to upgrade or downgrade your CN-Series firewall deployment. For either method, you must schedule the upgrade or downgrade during a planned maintenance window.
  • —You cannot upgrade the CN-Series from PAN-OS 10.0.x to PAN-OS 10.1.x; instead, you must redeploy the CN-Series. Additionally, you cannot upgrade directly from a CN-Series as a DaemonSet deployment to a CN-Series as a Service deployment. You must redeploy the CN-Series to move from one deployment method to another.
  • —Use the new version to deploy a new CN-MGMT statefulset and service in the cluster, so you have two pairs of CN-MGMT pods running simultaneously while you perform a rolling upgrade of the CN-NGFW pods on each node. When the CN-NGFW pod is upgraded it registers to the new CN-MGMT pods and when the process completes for all secured nodes in your cluster, you can delete the old CN-MGMT statefulset and service in the cluster.
  • —Delete your existing CN-Series firewall deployment and replace the existing deployment completely. In this workflow, you must plan for a longer maintenance window because all the firewalls will be offline at the same time, and all the secured application traffic will be impacted until the firewalls pods are up again.
Both these methods create a new serial number for the CN-MGMT pods, and you must install the dynamic content updates for the subscriptions you have purchased. Review the Release Notes for the PAN-OS version to verify the minimum content version that is required and install it on the CN-MGMT pods.

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