ElasticSearch Backup on Windows and Restore on Linux - elasticsearch

Question

I'm trying to backup an index in ElasticSearch 6.2.2 on Windows and restore it on ElasticSearch 6.2.3 on linux. I'm taking following steps but I never see the snapshots on the linux machine (based on https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-snapshots.html):
Register a snapshot repository on Windows
PUT /_snapshot/my_backup
{
"type": "fs",
"settings": {
"location": "C:\\EsBackup",
"compress": true
}
}
Create a snapshot on Windows
PUT /_snapshot/my_backup/bcp?wait_for_completion=true
{
"indices":"myindex"
}
Check that snapshot is created
GET /_snapshot/my_backup/bcp
It shows success
{
"snapshots": [
{
"snapshot": "bcp",
"uuid": "xGLvw4JnRqadcyg4fxH1HA",
"version_id": 6020299,
"version": "6.2.2",
"indices": [
"bcp"
],
"include_global_state": true,
"state": "SUCCESS",
"start_time": "2018-05-10T16:48:22.970Z",
"start_time_in_millis": 1525970902970,
"end_time": "2018-05-10T16:48:36.816Z",
"end_time_in_millis": 1525970916816,
"duration_in_millis": 13846,
"failures": [],
"shards": {
"total": 3,
"failed": 0,
"successful": 3
}
}
]
}
I copy the files to linux and check that size and number of files is the same. (It's around 200 files with size of 500MB). I copy everything to a folder ~/elasticsearch-6.2.3/backup
Initialize the repository
curl -X PUT "localhost:9200/_snapshot/my_backup" -H 'Content-Type: application/json' -d'{"type": "fs","settings": {"location": "~/elasticsearch-6.2.3/backup","compress": true}}'
And got acknowledgement: {"acknowledged":true}
So I check which snapshots are available
curl -X GET "localhost:9200/_snapshot/my_backup/_status"
But the list is empty {"snapshots":[]}
And restore
curl -X POST "localhost:9200/_snapshot/my_backup/bcp/_restore?pretty"
returns an error
{
"error" : {
"root_cause" : [
{
"type" : "snapshot_restore_exception",
"reason" : "[my_backup:bcp] snapshot does not exist"
}
],
"type" : "snapshot_restore_exception",
"reason" : "[my_backup:bcp] snapshot does not exist"
},
"status" : 500
}
What step am I missing? I tried to _verify the repository and it's valid. Version 6.2.2 and 6.2.3 should be compatible.

Answer 1

Add the following in elasticsearch.yml file:
path.repo: /path/to/repo

Answer 2

I'm not sure why, but the home path cannot use ~, but if stated as "/home/user/elasticsearch-6.2.3/backup" then it works