etcd-backup-kubernetes

backup etcd and kubeadm

mkdir -p backup

sudo cp -r /etc/kubernetes/pki ./backup


sudo docker run --rm -v $(pwd)/backup:/backup \
    --network host \
    -v /etc/kubernetes/pki/etcd:/etc/kubernetes/pki/etcd \
    --env ETCDCTL_API=3 \
    k8s.gcr.io/etcd:3.2.24 \
    etcdctl --endpoints=https://127.0.0.1:2379 \
    --cacert=/etc/kubernetes/pki/etcd/ca.crt \
    --cert=/etc/kubernetes/pki/etcd/healthcheck-client.crt \
    --key=/etc/kubernetes/pki/etcd/healthcheck-client.key \
    snapshot save /backup/etcd-snapshot-latest.db


kubectl -n kube-system get cm kubeadm-config -oyaml

kubeadm config view > ./backup/kubeadm-config.yaml

### list the contents of the backup file and then tar them:

ls -lh ./backup

tar -cvzf etcd-backup.tgz ./backup

https://kubernetes.io/docs/tasks/administer-cluster/kubeadm/kubeadm-upgrade-1-13/