What Is The Container Network Interface (CNI)?
The Container Network Interface (CNI) is a framework for dynamically configuring network resources. It makes use of Go-written libraries and specifications. The plugin standard specifies an interface for configuring the network, assigning IP addresses, and maintaining connectivity to many hosts.
When used with Kubernetes, CNI connects smoothly with the Kubelet, allowing for the use of an over or underlay network to automatically configure the network between pods. These networks encapsulate network activity behind a virtual interface, such as Virtual Extensible LAN (VXLAN). Serves as networks are physical networks made up of switches and routers.
Once you’ve defined the network configuration type, the container runtime determines which network the containers join. The runtime adds the interface to the container namespace using the CNI plugin and distributes the linked subnetwork routes using the IP Address Management (IPAM) plugin.
CNI supports Kubernetes networking and is compatible with other Kubernetes-based container management solutions, including OpenShift. CNI uses software-defined networking (SDN) to unify container communication between clusters.
What Is Container Network Interface (CNI) ?
Controlling networks within Kubernetes clusters is mostly dependent on the Container Network Interface (CNI). CNI is an important component of the Kubernetes environment that allows easy networking and communication between containers and other networks. Let’s briefly discuss the Container Network Interface (CNI).