Reindex ElasticSearch one index at a time using ElasticDump.

reindex.sh

#!/bin/bash

# REQUIRES: 
# elasticdump, gzip, curl

# BE CAREFUL OF: 
# the check before it'll delete the index it's just dumped it to just see if it's
# larger than a gzip file with no content (21 bytes), more thorough checking may be required depending
# on importance and availability of your data
  
for i in $(curl -s http://elasticsearch:9200/_cat/indices?pretty | awk '{print $3}'); do
        printf "dumping index '$i'...  "
        elasticdump --quiet --input=http://elasticsearch:9200/$i --output=$ | gzip > $i.json.gz
        printf "done!\n"

        dumpsize=$(wc -c <$i.json.gz)
        minimumsize=21

        if [ $dumpsize -gt 21 ]; then
                printf "deleting index '$i'...  "
                curl -s -x DELETE http://elasticsearch:9200/$i
                printf "done! \n"
        else
                printf "i screwed up whilst dumping '$i', aborting..."
                exit 1
        fi

        printf "importing index '$i'..."
        elasticdump --quiet --input=$i.json.gz --output=http://elasticsearch:9200
        printf "done!\n"
done