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Submariner

Open SourceFunded

Enables secure networking between Kubernetes clusters across environments

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About Submariner

Submariner is an open source project designed to facilitate direct Layer 3 networking between Pods and Services across multiple Kubernetes clusters, whether deployed on-premises or in various cloud environments. It addresses the challenges enterprises face when managing multi-cluster Kubernetes deployments for geo-redundancy, scalability, and fault isolation. By enabling seamless cross-cluster connectivity, Submariner allows applications to span multiple cloud providers, data centers, and regions without complex network reconfiguration.

Targeted at enterprise IT teams and cloud infrastructure architects, Submariner is network plugin agnostic and supports encrypted or unencrypted connections, service discovery across clusters, and interconnection of clusters with overlapping CIDRs. It simplifies multi-cluster Kubernetes networking through tools like the subctl CLI utility, making deployment and management more straightforward. As a Cloud Native Computing Foundation sandbox project, Submariner offers a community-driven, open source solution for enterprises seeking to enhance their Kubernetes networking capabilities across hybrid and multi-cloud environments.

Key Capabilities

  • Cross-cluster Layer 3 connectivity
  • Encrypted and unencrypted network connections
  • Service discovery across Kubernetes clusters
  • Support for overlapping CIDR interconnections
  • CLI tool for simplified deployment and management

Integrations

Google Kubernetes Engine (GKE)RancherOpenShift

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Quick Facts

submariner.io
CategoryCloud Infrastructure
PricingOpen Source
DeploymentOpen Source
Target SizeEnterprise