Elasticsearch respository shows no snapshots after upgrade from 2.x to 5.x

Question

On a RHEL6 system, I followed the steps laid out here to create a repository and capture a snapshot prior to my upgrade. I verified the existence of the snap shot:

curl 'localhost:9200/_snapshot/_all?pretty=true'

Which gave me the following result:

{ "upgrade_backup" : {
"type" : "fs",
"settings" : {
"compress" : "true",
"location" : "/tmp/elasticsearch-backup"
} } }

After upgrading Elasticsearch via yum, I went to restore my snapshot but none are showing up:

curl 'localhost:9200/_snapshot/_all?pretty=true'

{ }

I checked on the file system and see the repository files:

ls -lrt /tmp/elasticsearch-backup

total 24
-rw-r--r--. 1 elasticsearch elasticsearch 121 Apr 7 14:42 meta-snapshot-number-one.dat
drwxr-xr-x. 3 elasticsearch elasticsearch 21 Apr 7 14:42 indices
-rw-r--r--. 1 elasticsearch elasticsearch 191 Apr 7 14:42 snap-snapshot-number-one.dat
-rw-r--r--. 1 elasticsearch elasticsearch 37 Apr 7 14:42 index
-rw-r--r--. 1 elasticsearch elasticsearch 188 Apr 7 14:51 index-0
-rw-r--r--. 1 elasticsearch elasticsearch 8 Apr 7 14:51 index.latest
-rw-r--r--. 1 elasticsearch elasticsearch 29 Apr 7 14:51 incompatible-snapshots

I made sure elasticsearch.yml still has the "data.repo" tag, so I'm not sure where to look or what to do to determine what happened, but somehow my snapshots vanished!

Answer 1

You need to add following line to elasticsearch.yml :

path.repo: ["/tmp/elasticsearch-backup"]

Then restart Elastic service and create a new snapshots repository:

curl -XPUT "http://localhost:92000/_snapshot/backup" -H 'Content-Type: application/json' -d '{
    "type": "fs",
    "settings": {
        "location": "/tmp/elasticsearch-backup",
        "compress": true
    }
}'

Now you should be able to list all snapshots in your repository and eventually restore them:

curl -s -XGET "localhost:9200/_snapshot/backup/_all" | jq .