Submariner
Submariner enables direct networking between Pods and Services in different Kubernetes clusters, either on-premises or in the cloud.
Stars
2.24K
Forks
182
Open issues
41
Closed issues
643
Last release
6 months ago
Last commit
5 months ago
Watchers
2.24K
Total releases
98
Total commits
1.94K
Open PRs
1
Closed PRs
1.81K
- Project Website
- https://submariner.io
- Platform
- License
- apache-2.0
- Category
- Usecase
- Runtime Cloud Native Network
- Offers premium version?
- NO
- Proprietary?
- NO
- About
-
Submariner
- Architecture
- Network Path
- Prerequisites
- Installation
- Installation using subctl
- Installation using Helm
- Validate Submariner is Working
- Building and Testing
- Known Issues
- Contributing
Submariner is a tool built to connect overlay networks of different Kubernetes clusters. Submariner is designed to be network plugin (CNI) agnostic and supports both encrypted and non-encrypted tunnels between the connected clusters.
Note that Submariner is in an early stage, and while we welcome usage and experimentation, it is quite possible that you could run into bugs.
Submariner is a Cloud Native Computing Foundation sandbox project.
Architecture
See the Architecture section of Submariner's website.
Network Path
The network path of Submariner varies depending on the origin/destination of the IP traffic. In all cases, traffic between two clusters will transit between the leader elected (in each cluster) gateway nodes, through the configured cable driver.
When the source Pod is on a worker node that is not the elected gateway node, the traffic destined for the remote cluster will transit through the submariner VXLAN tunnel (
vx-submariner) to the local cluster gateway node. On the gateway node, traffic is forwarded to the remote cluster over the configured tunnel. Once the traffic reaches the destination gateway node, it is routed in one of two ways, depending on the destination CIDR. If the destination CIDR is a Pod network, the traffic is routed via CNI-programmed network. If the destination CIDR is a Service network, then traffic is routed through the facility configured via kube-proxy on the destination gateway node.Prerequisites
See the Prerequisites docs on Submariner's website.
Installation
Submariner is always deployed using a Go-based Kubernetes custom controller, called an Operator, that provides API-based installation and management. Deployment tools like the
subctlcommand line utility and Helm charts wrap the Operator. The recommended deployment method issubctl, as it is currently the default in CI and provides diagnostic features.See the Deplyment docs on Submariner's website.
Installation using subctl
Submariner provides the
subctlCLI utility to simplify the deployment and maintenance of Submariner across your clusters.See the
subctlDeployment docs on Submariner's website.Installation using Helm
See the Helm Deployment docs on Submariner's website.
Validate Submariner is Working
See the
subctl verifydocs and Automated Troubleshooting docs on Submariner's website.Building and Testing
See the Building and Testing docs on Submariner's website.
Known Issues
See the Known Issues docs on Submariner's website.
Contributing
See the Development section of Submariner's website.
- Architecture
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