copy one Elasticesarch index to another

copy_es_index.bash

#!/bin/bash

CURRENTINDEX="test"
NEWINDEX="newindex"
    #where the indices are stored within the DATADIR
INDICESDIR=/var/lib/elasticsearch/elasticsearch/nodes/0/indices/

#get the metadata for the current index
curl localhost:9200/$CURRENTINDEX/_settings?pretty=true > /tmp/settings
curl localhost:9200/$CURRENTINDEX/_mapping?pretty=true > /tmp/mappings

#now let's hack our way to building a template for the new index
#in order to put the metadata
echo "{" > /tmp/template
    #name of our template goes here
echo "  \"template\": \"$NEWINDEX\"," >> /tmp/template
    #add settings
grep -v -e "^{" -e "^}" -e "^\ \ }" -e "^\ \ \"" /tmp/settings >> /tmp/template
echo "," >> /tmp/template
    #add mappings
sed -i s/^\ \ \"$CURRENTINDEX\"/\ \ \"mappings\"/ /tmp/mappings
grep -v "^{" /tmp/mappings >> /tmp/template

sleep 2

#put the template
curl -XPUT localhost:9200/_template/$NEWINDEX --data-binary @/tmp/template

#create the index
curl -XPUT localhost:9200/$NEWINDEX

sleep 2

#stop ES
/etc/init.d/elasticsearch stop

#copy all shards to the new index
for SHARD in `ls -1 $INDICESDIR/$CURRENTINDEX/ | grep -v "^_state$"`; do
    cp -r $INDICESDIR/$CURRENTINDEX/$SHARD $INDICESDIR/$NEWINDEX/
done

#start ES
/etc/init.d/elasticsearch start

#optionally, delete the template we created
#curl -XDELETE localhost:9200/_template/$NEWINDEX