Ingress Networking on Kubernetes Clusters

This Networking section under cluster details helps manage a cluster's firewalls and ingress networking. Port forwarding and load balancing rules can also be managed using kubectl.

Note - Apiculus Kubernetes Service supports traefik and nginx ingress controllers.

Adding a Firewall Rule to Cluster

A firewall restricts incoming and outgoing network traffic to enhance the security of Kubernetes clusters. It prevents unauthorised access to the cluster's components and resources.

• Click the ADD NETWORKING RULE button, and a popover will open.
• Select Firewall from the list of networking options and then specify the following options.
  • Super CIDR (CIDR notation typically consists of an IP address followed by a slash ("/") and a number indicating the number of significant bits in the subnet mask. For example, "192.168.1.0/24" represents a subnet with an IP range from 192.168.1.0 to 192.168.1.255)
  • Choose a Protocol from the available options, i.e., TCP, UDP & ICMP
  • Enter the Start Port
  • Enter the End Port 
  • Click on ADD FIREWALL RULE

Adding a Port Forwarding Rule to Cluster

Port forwarding allows external traffic to access specific services running within Kubernetes pods, enabling external communication with applications.

• Click the ADD NETWORKING RULE button, and a popover will open.
• Select Port Forwarding from the list of networking options and then specify the following options.
  • Select the particular node from the list
  • Choose a Protocol from the available options, i.e., TCP, UDP.
  • Enter the Public Start and End Port
  • Enter the Private Start and End Port
  • Click on ADD PORT FORWARDING RULE

Adding a Load Balancing Rule to Cluster

Cluster load balancing rules distribute incoming network traffic across multiple Kubernetes pods to ensure high availability, fault tolerance, and optimal resource utilisation.

• Click the ADD NETWORKING RULE button, and a popover will open.
• Select Load Balancing from the list of networking options and then specify the following options.
  • Specify the name of the rule.
  • Choose a Protocol from the available options, i.e., TCP proxy, TCP, and UDP. (The protocol determines how the traffic is transmitted)
  • Enter the Public Port.
  • Enter the Private Port.
  • Select the algorithm.
  • Click on ADD LOAD BALANCING RULE