As a leading, open-source multi-cluster orchestration platform, Rancher lets operations teams deploy, manage and secure enterprise Kubernetes. Rancher also gives users a set of CNI options to choose from, including open-source Project Calico. Calico provides native Layer 3 routing capability for Kubernetes pods which simplifies the networking architecture, increases networking performance and provides a rich network policy model that makes it easy to lock down communication so the only traffic that flows is the traffic you want to flow.
Services are one of the key Kubernetes primitives you need to understand to glue microservices together and expose your applications outside of the cluster. The Service resource provides an abstract way to expose an application running on a set of pods as a network service.
Calico provides a range of options for accessing services in a Rancher cluster depending on your needs and the specific cluster environment. For example, you may need to limit access to specific external clients, or you may be running workloads that are latency-sensitive. Understanding how services work in your cluster and the many services options available to you can help you determine the best approach to addressing your specific use cases. Working through this process will raise questions, such as:
Here is a short 7-minute video that explains all this and more!
In the video you’ll learn:
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