Container orchestration कई machines में containers की deployment, scaling, networking और management को automate करता है। जैसे-जैसे applications कई hosts में फैले हुए कई containers तक बढ़ते हैं, manual management अव्यावहारिक हो जाती है — Kubernetes जैसे orchestrators इसे संभालते हैं। containerized applications को scale करने के लिए इस आवश्यकता को समझना महत्वपूर्ण है।
समस्या: scale पर containers को manage करना
Running a few containers on one host is manageable. But in production at scale:
→ MANY containers across MANY hosts (dozens/hundreds of services and instances)
→ containers crash → need to restart automatically
→ load increases → need to scale up (more instances) / scale down
→ deployments → roll out new versions without downtime; roll back on failure
→ distribute containers across hosts; route traffic; service discovery
→ Doing all this MANUALLY is impractical and error-prone. → ORCHESTRATION automates it.
