Install binaries
To be able to back up a k8s cluster, first we need the executable file etcdctl, downloadable from here (choose the appropriate release). After that, unpack the archive file (this results in a directory containing the binaries) and add the executable binaries to your path (i.e. /usr/local/bin)
Download binary
# For example, let's download release 3.5.4 $ wget https://github.com/etcd-io/etcd/releases/download/v3.5.4/etcd-v3.5.4-linux-amd64.tar.gz $ tar xzvf etcd-v3.5.4-linux-amd64.tar.gz $ sudo cp etcd-v3.5.4-linux-amd64/etcdctl /usr/local/bin/ $ etcdctl version etcdctl version: 3.5.4 API version: 3.5