begin to add node backup

scripts/node-backup.sh

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+#!/bin/bash
+mkdir -p /backup/etcd
+mkdir -p /backup/ceph
+
+TIMESTAMP=$(date +%Y-%m-%d_%H-%M-%S)
+
+# Backup etcd
+ETCDCTL_API=3 etcdctl --endpoints=https://127.0.0.1:2379 \
+    --cacert=/etc/kubernetes/pki/etcd/ca.crt \
+    --cert=/etc/kubernetes/pki/etcd/server.crt \
+    --key=/etc/kubernetes/pki/etcd/server.key \
+    snapshot save /backup/etcd/snapshot_$TIMESTAMP.db
+
+# Backup ceph
+tar -czf /backup/ceph/ceph_$TIMESTAMP.tar.gz /var/lib/rook
+
+# Replicate backup to hv00
+rsync -az /backup/etcd/snapshot_$TIMESTAMP.db backup:/mnt/backup/etcd/snapshot_$TIMESTAMP.db
+rsync -az /backup/ceph/ceph_$TIMESTAMP.tar.gz backup:/mnt/backup/ceph/ceph_$TIMESTAMP.tar.gz

systemd/node-backup.service

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+Type=oneshot
+ExecStart=/scripts/node-backup.sh