कंटेनर ऑर्केस्ट्रेशन अनेक मशीनांवर कंटेनरांचे deployment, scaling, networking, आणि management यांचे स्वयंचलीकरण करते। जेव्हा applications अनेक hosts वर अनेक कंटेनरांमध्ये वाढतात, तेव्हा manual management अव्यावहारिक बनते — Kubernetes सारख्या orchestrators हे हाताळतात। containerized applications ला scale करण्याचे आवश्यकता समजणे महत्वाचे आहे।
समस्या: कंटेनरांचे scale वर management
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.
