Dirty way of getting elasticsearch index data for debugging

elasticseach_index_dump.sh

#!/bin/bash
set -e
# Don't use in PROD!

# Script params:
# ES_URL - https://your-elasticseach-url.local
# INDEX - your-index-name
ES_URL=$1
INDEX=$2
SUFFIX=0

curl -s -XPOST "${ES_URL}/${INDEX}/_search?scroll=10m&size=10000&pretty=true" >./${INDEX}-${SUFFIX}
echo "Data fetch for index ${INDEX} completed. Counter: ${SUFFIX}"
ID="{`head -2 ${INDEX}-${SUFFIX} | tail -1 | tr -d ','|sed -e 's/_scroll_id/scroll_id/g'`}"

while true; do
  COUNT=`jq '.hits.hits | length' ./${INDEX}-${SUFFIX}`
  if [[ $COUNT -eq 0 ]]; then
    echo "Reached end of the index"
    rm ./${INDEX}-${SUFFIX}
    exit 0
  fi
  SUFFIX=$((SUFFIX + 1))
  curl -s --fail -XPOST -H 'Content-Type:application/json' "${ES_URL}/_search/scroll?pretty=true&scroll=10m" --data "${ID}" >./${INDEX}-${SUFFIX}
  echo "Data fetch for index ${INDEX} completed. Counter: ${SUFFIX}"
done