High Availability Support for CN-Series Firewall as a Kubernetes CNF

High availability (HA) is a configuration in which two firewalls are placed in a group and their configuration is synchronized to prevent a single point of failure on your network. A heartbeat connection between the firewall peers ensures seamless failover in the event that a peer goes down. Setting up the firewalls in a two-device cluster provides redundancy and allows you to ensure business continuity.
You can now deploy the CN-series-as-a-kubernetes-CNF in HA. This mode of deployment supports only active/passive HA with session and configuration synchronization.
When you deploy the CN-Series-as-a-Kubernetes CNF in HA, there will be two PAN-CN-MGMT-CONFIGMAP, PAN-CN-MGMT, and PAN-CN-NGFW YAML files each for active and passive nodes.
To successfully deploy the CN-Series firewall as a Kubernetes CNF in HA with layer 3 support:
  • In HA, each Kubernetes node should have at least three interfaces: Management (default), HA2 interface, and data interface.
  • For CN-Series firewall in L3 mode, there should be at least two interfaces: Management (default) and data interface.
  • Modify the new Network Attachment definition YAML files with the following changes:
    • Ensure that the
      PAN_HA_SUPPORT
      parameter value is
      true
      in the following YAML files:
      pan-cn-mgmt-configmap-0.yaml
      pan-cn-mgmt-configmap-1.yaml
    • Retrieve the
      pciBusID
      value from the hypervisor interface running the following command:
      ethtool -i interface name
      Add the above retrieved
      pciBusID
      value to the following Network definition files:
      net-attach-def-1.yaml
      net-attach-def-2.yaml
      net-attach-def-3.yaml
      net-attach-def-ha2-0.yaml
      net-attach-def-ha2-1.yaml
    • Retrieve the static IP address of the HA2 interface from the corresponding node instance on the AWS console and add it to the
      address
      parameter of
      net-attach-def-ha2-0.yaml
      and
      net-attach-def-ha2-1.yaml
      file.

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