Note: to enable this control run Kubescape with host sensor (see here)
Kubelets can automatically manage the required changes to iptables based on how you choose your networking options for the pods. It is recommended to let kubelets manage the changes to iptables. This ensures that the iptables configuration remains in sync with pods networking configuration. Manually configuring iptables with dynamic pod network configuration changes might hamper the communication between pods/containers and to the outside world. You might have iptables rules too restrictive or too open.
Allow Kubelet to manage iptables.
Run the following command on each node:
ps -ef | grep kubelet
Verify that if the
--make-iptables-util-chains argument exists then it is set to
--make-iptables-util-chains argument does not exist, and there is a Kubelet config file specified by
--config, verify that the file does not set
If using a Kubelet config file, edit the file to set
If using command line arguments, edit the kubelet service file
/etc/kubernetes/kubelet.conf on each worker node and remove the
--make-iptables-util-chains argument from the
Based on your system, restart the
kubelet service. For example:
systemctl daemon-reload systemctl restart kubelet.service
Kubelet would manage the iptables on the system and keep it in sync. If you are using any other iptables management solution, then there might be some conflicts.
--make-iptables-util-chains argument is set to
Updated 12 days ago