Etcd, pronounced as “et-cee-dee” is an open-source distributed key-value store, is used by Kubernetes to store all its data, like configuration data, state data, and even metadata. Etcd is a distributed data store and allows nodes in the cluster to read and write.
If you are interested in learning and getting trained in Kubernetes, check out the Kubernetes training course from Intellipaat. Also, watch the following video on Fleet Management for Kubernetes to get a better understanding.
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