Kubernetes, an open-source container-orchestration system, automates application deployment, scaling, and management. It provisions and maintains container lifecycles, assigning IP addresses during provisioning and releasing them upon container destruction. The goal of TCPWave's Kubernetes integration is to simplify IP address tracking and visibility by capturing and releasing IP addresses in the IPAM (IP Address Management).
TCPWave's custom-built CNI (Container Network Interface) plugin overcomes the limitations of Kubernetes' built-in static IP allocation, providing a more comprehensive IP address management solution. The plugin is designed in the GO language, leveraging Kubernetes' inbuilt libraries for smooth integration. Furthermore, our IPAM communication relies solely on SSL certificates, enhancing security.
Enhanced IP Address Management
Streamlined Container Deployment
Improved Security
Scalability and Flexibility
The Kubernetes integration integrates the Kubernetes container runtime system with our IPAM (IP Address Management) system. It is responsible for managing the network connectivity of containers, including allocating IP addresses and configuring network namespaces. The plugin communicates with our IPAM using the tims-go-client library. The CNIDaemon component acts as a bridge between the plugin and our IPAM, handling IP allocation and deletion. The plugin reads input from Kubernetes and passes the necessary information to the CNIDaemon. The TCPWave CNI (Container Network Interface) plugin enables Kubernetes users to easily manage and provision network resources for containerized workloads. The github article https://github.com/TCPWAVE/cni-tcpwave provides additional information about the integration.
The CNI (Container Network Interface) plugin is a vital component in integrating container runtime systems with networking technologies. It plays a critical role in managing network connectivity for containers by assigning IP addresses, configuring network namespaces, and establishing routes. The plugin loads configuration, initializes services, and manages container networking operations. The CNI-plugin is the primary component used by Kubernetes for container provisioning and deletion. It receives input from Kubernetes and passes essential information to the CNI-daemon for IP address allocation and release. Together, these components work seamlessly to manage container networking operations in Kubernetes.
The tims-go-client library, communicates with the IPAM for creating/deleting Networks, Subnets and IP addresses. The CNI-daemon agent acts as a bridge between the CNI-plugin and the IPAM, using tims-go-client to communicate for IP allocation and deletion. This daemon runs continuously and takes input from the cni-plugin.
In conclusion, container networking is a vital aspect of modern containerized infrastructure, and Kubernetes CNI provides a flexible and extensible way to manage container networking. TCPWave CNI (Container Network Interface) plugin simplifies network management by integrating with Kubernetes and IPAM systems, allowing efficient IP allocation and releasing. The Kubernetes ecosystem is continuously evolving, and CNI plugins like TCPWave help keep up with the rapid pace of development. As containerization becomes more prevalent in modern IT infrastructure, CNI plugins will play an essential role in ensuring the reliability and scalability of container networking.
