Service mesh concept overview in Kubernetes - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a service mesh in Kubernetes?

A service mesh is a dedicated layer that manages communication between microservices in Kubernetes. It helps with routing, security, and monitoring without changing the application code.

beginner

Name two common service mesh tools used with Kubernetes.

Istio and Linkerd are two popular service mesh tools that help manage service-to-service communication in Kubernetes clusters.

intermediate

How does a service mesh improve security between microservices?

It encrypts communication between services and enforces policies like authentication and authorization automatically.

intermediate

What role do sidecar proxies play in a service mesh?

Sidecar proxies run alongside each microservice instance to intercept and manage network traffic, enabling features like load balancing and retries.

beginner

Why is a service mesh useful in microservices architecture?

It simplifies managing complex communication, improves reliability, and adds observability without changing the microservices themselves.

What is the main purpose of a service mesh?

A Build container images

B Manage communication between microservices

C Deploy Kubernetes clusters

D Store application data

A service mesh manages communication between microservices, handling routing, security, and monitoring.

Which component typically runs alongside each microservice in a service mesh?

A Sidecar proxy

B Database

C Load balancer

D API gateway

Sidecar proxies run next to microservices to intercept and manage their network traffic.

Which of these is NOT a feature provided by a service mesh?

A Traffic encryption

B Service discovery

C Automatic retries on failure

D Code compilation

Service meshes do not compile code; they manage service communication features like retries and encryption.

Which service mesh tool is widely used with Kubernetes?

A Istio

B Docker

C Terraform

D Jenkins

Istio is a popular service mesh tool designed for Kubernetes environments.

How does a service mesh help with observability?

A By storing application data

B By compiling source code

C By collecting metrics and logs from service traffic

D By managing user authentication

Service meshes collect data about service communication to help monitor and troubleshoot applications.

Explain what a service mesh is and why it is useful in Kubernetes.

Think about how microservices talk to each other and what challenges a service mesh solves.

Describe the role of sidecar proxies in a service mesh.

Imagine a helper that manages the network work for each microservice.