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Kubernetes Services Fundamentals

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Details

Provider

CodeSignal
Pricing

Free Certificate
Languages

English
Certificate

Certificate Available
Effort

3 hours
Sessions

Self-Paced
Level

Intermediate

Found in

Part of

Introduction to Kubernetes

Overview

Make applications accessible with Kubernetes Services. Learn how Services use label selectors to dynamically find Pods, expose apps internally with ClusterIP and externally with NodePort, configure port mappings between Services and containers, and enable automatic service discovery via DNS.

Syllabus

Unit 1: Service Wiring Basics

Wire Service to Running Pods
Debug Broken Service to Pod Wiring
Create Service Configuration from Scratch
Debug Cross-Wired Service Selectors
Observe Service Endpoints During Scaling

Unit 2: ClusterIP Services in Practice

Wiring a Three Tier Application
Creating a Headless Service for StatefulSets
Configuring Session Affinity for Sticky Sessions
Exposing Multiple Ports on One Service
Enabling Topology Aware Traffic Routing

Unit 3: NodePort Services

Reconfiguring NodePort for External Access
Building a Three Port Service
Multiple Entry Points for One Application
Configuring Traffic Policies for NodePort Services
Troubleshooting NodePort Service Connectivity Issues

Unit 4: Advanced Port Mapping

Exposing Multiple Container Ports
Using Named Port References
Debugging Incorrect Service Port Mapping
Standardizing Ports Across Multiple Applications
Protocol-Specific Port Mapping for Services

Unit 5: Service Discovery with DNS

Fix Service Discovery: Replacing Hardcoded IPs with DNS Names
Connecting Services to External Resources
Cross-Namespace Service Access Using FQDNs
Proving Service Stability During Pod Churn
Headless Service DNS and Direct Pod Addressing

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