Best Container Networking Software for Mirantis Kubernetes Engine

Calico is a versatile open-source solution designed for networking and securing containers, virtual machines, and workloads on native hosts. It is compatible with a wide array of platforms such as Kubernetes, OpenShift, Mirantis Kubernetes Engine (MKE), OpenStack, and even bare metal environments. Users can choose between leveraging Calico's eBPF data plane or utilizing the traditional networking pipeline of Linux, ensuring exceptional performance and true scalability tailored for cloud-native applications. Both developers and cluster administrators benefit from a uniform experience and a consistent set of features, whether operating in public clouds or on-premises, on a single node, or across extensive multi-node clusters. Additionally, Calico offers flexibility in data planes, featuring options like a pure Linux eBPF data plane, a conventional Linux networking data plane, and a Windows HNS data plane. No matter if you are inclined toward the innovative capabilities of eBPF or the traditional networking fundamentals familiar to seasoned system administrators, Calico accommodates all preferences and needs effectively. Ultimately, this adaptability makes Calico a compelling choice for organizations seeking robust networking solutions.

Flannel serves as a specialized virtual networking layer tailored for containers. In the context of the OpenShift Container Platform, it can be utilized for container networking as an alternative to the standard software-defined networking (SDN) components. This approach is particularly advantageous when deploying OpenShift within a cloud environment that also employs SDN solutions, like OpenStack, allowing for the avoidance of double packet encapsulation across both systems. Each flanneld agent transmits this information to a centralized etcd store, enabling other agents on different hosts to effectively route packets to various containers within the flannel network. Additionally, the accompanying diagram showcases the architecture and the data flow involved in facilitating communication between containers over a flannel network. This setup enhances overall network efficiency and simplifies container management in complex environments.

Cilium is an open-source tool designed to enhance, secure, and monitor network interactions among container workloads and cloud-native environments, leveraging the groundbreaking Kernel technology known as eBPF. Unlike traditional setups, Kubernetes does not inherently include a Load Balancing solution, which is often left to cloud providers or the networking teams in private cloud settings. By utilizing BGP, Cilium can manage incoming traffic effectively, while also using XDP and eBPF to optimize performance. These combined technologies deliver a powerful and secure load balancing solution. Operating at the kernel level, Cilium and eBPF allow for informed decisions regarding the connectivity of various workloads, whether they reside on the same node or across different clusters. Through the integration of eBPF and XDP, Cilium significantly enhances latency and performance, replacing the need for Kube-proxy altogether, which streamlines operations and improves resource usage. This not only simplifies the network architecture but also empowers developers to focus more on application development rather than infrastructure concerns.