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Flannel is a virtual networking layer and Kubernetes CNI plugin that provides automated subnet management and Layer 3 overlay connectivity. It functions as a container network fabric, enabling distributed containers and pods across multiple hosts to communicate using unique IP addresses without manual routing configuration. The system operates as a distributed subnet manager, allocating and persisting unique subnet ranges to hosts using a distributed key-value store. This ensures conflict-free container addressing across the cluster by tracking subnet leases and persisting network metadata.
etcd is a distributed key-value store and configuration store designed to maintain a consistent set of data across a cluster of nodes. It functions as a reliable registry for storing and synchronizing critical settings and metadata used by distributed applications. The system implements the Raft consensus algorithm to ensure data consistency and leader election across servers. To protect data transfers and verify node identities, it utilizes a network security layer based on mutual TLS and client certificates. Its capabilities cover distributed configuration management, cluster state synchro
The main features of docker/libnetwork are: Networking and Discovery.
Open-source alternatives to docker/libnetwork include: coreos/etcd — etcd is a distributed key-value store and configuration store designed to maintain a consistent set of data across a… coreos/flannel — Flannel is a virtual networking layer and Kubernetes CNI plugin that provides automated subnet management and Layer 3… cpuguy83/docker-grand-ambassador. crosbymichael/skydock — Service discovery via DNS for docker. gliderlabs/registrator — Registrator is a dynamic service discovery tool and metadata synchronizer that acts as a bridge between Docker… kelseyhightower/confd — confd is a dynamic configuration templating engine and manager that generates local application configuration files…
