Kubernetes - Backup and Restore

How to backup and restore Kubernetes Cluster ?

Get the etcd binaries:

wget https://github.com/etcd-io/etcd/releases/download/v3.3.12/etcd-v3.3.12-linux-amd64.tar.gz

Unzip the compressed binaries:

tar xvf etcd-v3.3.12-linux-amd64.tar.gz

Move the files into /usr/local/bin:

sudo mv etcd-v3.3.12-linux-amd64/etcd* /usr/local/bin

Take a snapshot of the etcd datastore using etcdctl:

sudo ETCDCTL_API=3 etcdctl snapshot save snapshot.db --cacert /etc/kubernetes/pki/etcd/server.crt --cert /etc/kubernetes/pki/etcd/ca.crt --key /etc/kubernetes/pki/etcd/ca.key

View the help page for etcdctl:

ETCDCTL_API=3 etcdctl --help

Browse to the folder that contains the certificate files:

cd /etc/kubernetes/pki/etcd/

View that the snapshot was successful:

ETCDCTL_API=3 etcdctl --write-out=table snapshot status snapshot.db

Zip up the contents of the etcd directory:

sudo tar -zcvf etcd.tar.gz etcd

Copy the etcd directory to another server:

scp etcd.tar.gz cloud_user@18.219.235.42:~/