etcd is the unsung hero behind Kubernetes, acting as a distributed key-value store. Imagine it as a highly reliable filing cabinet that stores all the critical information your cluster needs to function.
This includes:
1. Cluster Configuration: How your pods, deployments, and services are set up.
2. Current State: The real-time status of your cluster, including running pods and their health.
3. Desired State: The configurations you’ve defined for your deployments and how they should be running.
Why is etcd Important?
1. Single Source of Truth: etcd ensures all nodes in your cluster have the same understanding of the desired and current state, preventing inconsistencies.
2. Coordination Powerhouse: It facilitates communication and coordination between different components of your Kubernetes system.
3. Resilience Champion: etcd is designed to be highly available, meaning your cluster can withstand failures without data loss.
Learn more about etcd:
i) Check out the official etcd project: https://etcd.io/
ii) Dive deeper into etcd’s role in Kubernetes: https://lnkd.in/gGcNKbZW
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