es_backup.sh

# Yout need to register a repository.
# This action need to be only done one time.
# $ curl -XPUT 'http://localhost:9200/_snapshot/backup' -d '{
#  "type": "fs",
#  "settings": {
#    "location": "/home/backup/elasticsearch",
#    "compress": true
#  }
# }'

date=$(date +%Y%m%d%H%M)
# Take a snapshot
curl -XPUT "localhost:9200/_snapshot/backup/snapshot_${date}?wait_for_completion=true"

# To restore: List snapshots, close all indexes & restore one snapshot.
# curl -XGET "localhost:9200/_snapshot/backup/_all?pretty=true"
# curl -XPOST "localhost:9200/_all/_close"
# curl -XPOST "localhost:9200/_snapshot/backup/snapshot_DATE/_restore?wait_for_completion=true"