Lesson -3 : ETCD
etcd (often written as ETCD ) is a critical piece of modern distributed systems—especially in Kubernetes. It’s not a container tool itself, but a reliable data store that keeps the entire system’s state consistent 📦 What is etcd? etcd is a distributed key–value store designed for: Reliability Consistency Fault tolerance It stores data in simple key → value pairs , but with strong guarantees that all nodes see the same data.