How does Kubernetes Service Mesh Work?
- Distributed applications in any architectural environment, including the cloud, have always required rules to control how their requests get from place to place. A Kubernetes service mesh or any type of service mesh does not introduce new logic or functionality to the runtime environment. Instead, Kubernetes network service mesh abstracts the logic that controls service to service communications to a layer of infrastructure and out of individual services.
- Service mesh layers atop Kubernetes infrastructure to render inter-service communications over the network reliable and safe. Kubernetes service mesh works similarly to how a tracking and routing service for shipped mail and packages does. It tracks routing rules and directs traffic and package routes dynamically based on those rules to ensure receipt and accelerate delivery.
- The components of a service mesh include a data plane and a control plane. Lightweight proxies distributed as sidecars comprise the data plane. Users can deploy these proxy technologies to build a service mesh in Kubernetes. The proxies in Kubernetes are in every application-adjacent pod and are run as cycles.
- Service mesh on Kubernetes architectures also enables secure communication between services. For example, with Kubernetes network service mesh users can enforce communication policies that deny or allow specific types of communication—such as enforcing a policy that denies production services access to development environment client services.
- Various Kubernetes service mesh options enable users to observe and monitor even highly distributed microservices systems. Kubernetes service mesh also frequently integrates with other tracing and monitoring tools to enable improved discovery and visualization of API latencies, traffic flow, dependencies between services, and tracing.
- This level of functionality is essential to monitoring complex cloud native applications and the distributed microservices environments that comprise them. Observability and granular insights are critical for a higher level of operational control.
What is Kubernetes Service Mesh?
Service mesh allows in Kubernetes that the services can be discovered and talk to other services. In addition, it implements smart routing, which targets the creation of the connections these endpoints or services make to API calls and how traffic is shared among them. As a result, it enables canaries or rolling upgrades, blue/green, and other sophisticated deployment tactics.
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