kubeadm - etcd Default Server Version

kubeadm 1.21 - Kubeadm now installs version 3.4.13 of etcd when creating a cluster with v1.19

kubeadm 1.20 - Update default etcd server version to 3.4.13

kubeadm 1.19 - Update default etcd server version to 3.4.13

kubeadm 1.18 - Update default etcd server version to 3.4.3 (추정)

kubeadm 1.17 - Update default etcd server version to 3.4.3

kubeadm 1.16 - client version 3.3.17 bug fix

kubeadm 1.15 - Default etcd server version remains unchanged at v3.3.10

kubeadm 1.14 - Default etcd server and client have been updated to v3.3.10

kubeadm 1.13 - Default etcd server is unchanged at v3.2.24 since Kubernetes 1.12.

kubeadm 1.12 - Default etcd server was updated to v3.2.24.