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Control Plane Components

ETCD

ETCD is a control-plane component that acts as a key-value store for K8S. The data store is used to store information about and relating to the cluster, such as nodes, pods, configs, secrets, and more.

Commands differ between ETCD API versions. Check the version using etcdctl version, or etcdctl --version

List available commands:

etcdctl
API V2

Manually set a key value:

etcdctl set key1 value1

Manually get a key value:

etcdctl get key1
API V3

Manually set a key value:

etcdctl put key1 value1

Manually get a key value:

etcdctl get key1

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