Submariner 0.12: Multi-Cluster Networking
K8s Guru
2 min read
Table of Contents
Introduction
Submariner 0.12 — Multi-Cluster Networking — was released on July 20, 2021.
Edge and east-west traffic paths tend to be where reliability and security issues show up first — so small gateway and proxy changes can have outsized impact.
In this release: Submariner 0.12 enhances multi-cluster networking with improved connectivity, better security, and enhanced observability for distributed Kubernetes deployments.
Connectivity Improvements
- Gateway performance optimizations reduce latency for cross-cluster communication.
- Route management improvements provide better control over traffic routing.
- Failover enhancements ensure reliable connectivity during gateway failures.
- Multi-cloud support enables connectivity across different cloud providers.
Security Enhancements
- Encryption improvements strengthen VPN security for cross-cluster traffic.
- Certificate management enhancements simplify TLS certificate rotation.
- Access control improvements enable fine-grained network policies across clusters.
- Audit logging expansion tracks cross-cluster network events.
Observability & Monitoring
- Metrics expansion provides detailed metrics for cross-cluster connectivity.
- Health monitoring improvements track gateway and connection health.
- Troubleshooting tools improve debugging of connectivity issues.
- Dashboard support provides visualization of multi-cluster network topology.
Operational Features
- Installation improvements simplify deployment and configuration.
- Upgrade enhancements ensure smooth upgrades between versions.
- Documentation expansion includes comprehensive guides for common scenarios.
- Community growth demonstrates active development and adoption.
Getting Started
subctl deploy-broker
subctl join broker-info.subm --clusterid cluster1
subctl join broker-info.subm --clusterid cluster2
Summary
| Aspect | Details |
|---|---|
| Release Date | July 20, 2021 |
| Headline Features | Connectivity improvements, security enhancements, better observability |
| Why it Matters | Enables secure, seamless networking across multiple Kubernetes clusters |
Submariner 0.12 continues to evolve as a leading solution for multi-cluster networking, providing teams with tools to connect distributed Kubernetes deployments.