I'm new to ElasticSearch. I'm trying to figure out how to remove data from ElasticSearch. I have deleted my indexes. However, that doesn't seem to actually remove the data itself. The other stuff I've seen points to the Delete by Query feature. However, I'm not even sure what to query on. I know my indexes. Essentially, I'd like to figure out how to do a
DELETE FROM [Index]
From PostMan in Chrome. However, I'm not having any luck. It seems like no matter what I do, the data hangs around. Thus far, I've successfully deleted the indexes by using the DELETE HTTP Verb in PostMan and using a url like:
http://localhost:9200/[indexName]
However, that doesn't seem to actually remove the data (aka docs) themselves.
This question is related to
elasticsearch
curl -X DELETE 'https://localhost:9200/_all'
Change http
to https
if you are using SSL certificate in you application
You can delete an index in python as follows
from elasticsearch import Elasticsearch
es = Elasticsearch([{'host':'localhost', 'port':'9200'}])
es.index(index='grades',doc_type='ist_samester',id=1,body={
"Name":"Programming Fundamentals",
"Grade":"A"
})
es.indices.delete(index='grades')
For mass-delete by query you may use special delete by query API:
$ curl -XDELETE 'http://localhost:9200/twitter/tweet/_query' -d '{
"query" : {
"term" : { "user" : "kimchy" }
}
}
Who interesting it has long history.
You can also delete the index using DELETE action in 'elasticsearch head' (Chrome plugin ). Add it to your chrome and connect it to your host. There you will find all your indices and if you click on actions button below the index you want to delete, you will find a DELETE option in the drop down. click on it and enter DELETE in the pop-up. Your index will be deleted. 'Elasticsearch head' extension is an easy way to view and manage your indices and data.
You have to send a DELETE
request to
http://[your_host]:9200/[your_index_name_here]
You can also delete a single document:
http://[your_host]:9200/[your_index_name_here]/[your_type_here]/[your_doc_id]
I suggest you to use elastichammer.
After deleting you can look up if the index still exists with the following URL: http://[your_host]:9200/_stats/
Good luck!
The documentation (or The Definitive Guide) says, that you can also use the next query to delete all indices:
curl -XDELETE 'http://localhost:9200/*'
And there's an important note:
For some, the ability to delete all your data with a single command is a very scary prospect. If you want to eliminate the possibility of an accidental mass-deletion, you can set the following to
true
in yourelasticsearch.yml
:
action.destructive_requires_name: true
There are lots of good answers here, but there is also something i'd like to add:
If you ever need to delete all the indexes, this may come in handy:
curl -X DELETE 'http://localhost:9200/_all'
Powershell:
Invoke-WebRequest -method DELETE http://localhost:9200/_all
Say I need to delete an index filebeat-7.6.2-2020.04.30-000001
and I performed it using a curl DELETE option (curl -X DELETE "localhost:9200/filebeat-7.6.2-2020.04.30-000001?pretty"
) and results in an authentication problem as below;
{
"error" : {
"type" : "security_exception",
"reason" : "missing authentication credentials for REST request [/filebeat-7.6.2-2020.04.30-000001?pretty]"
},
"status" : 401
}
Here you should authenticate the curl request using the username and password you have provided for Elasticsearch. Try then
curl -X DELETE -u myelasticuser:myelasticpassword "localhost:9200/filebeat-7.6.2-2020.04.30-000001?pretty"
will results in { "acknowledged" : true }.
simplest way !
Endpoint :
http://localhost:9201/twitter/_delete_by_query
Payload :
{
"query": {
"match": {
"message": "some message"
}
}
}
where twitter
is the index in elastic search
ref ; https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-delete-by-query.html
You can delete either whole index,doc-type or a perticular id data. these are the three ways:
curl -XDELETE localhost:9200/index_name
curl -XDELETE localhost:9200/index_name/doc-type
curl -XDELETE localhost:9200/index_name/doc-type/documentId
and if you wish to delete all the index then go for wildcard.
I wanted to delete logstash index and searched a lot regarding different tools like curl. But found the solution at the end.
Login into Kibana. Go to Dev Tools tab and type DELETE /logstash-*
in query field and hit green arrow button. if you get "acknowledged": true in response that means the data has been cleared.
You can delete one or more indices, which really deletes their files from disk. For example:
curl -XDELETE localhost:9200/$INDEXNAME
Where $INDEXNAME
can be an index name (e.g. users_v2
), N indices separated by comma (e.g. users_v2,users_v3
). An index pattern (e.g. users_*
) or _all
, also works, unless it's blocked in the config via action.destructive_requires_name: true
.
Deleting individual documents is possible, but this won't immediately purge them. A delete is only a soft delete, and documents are really removed during segment merges. You'll find lots of details about segments and merges in this presentation. It's about Solr, but merges are from Lucene, so you have the same options in Elasticsearch.
Back to the API, you can either delete individual documents by ID (provide a routing value if you index with routing):
curl -XDELETE localhost:9200/users_v2/_doc/user1
Or by query:
curl -XPOST -H 'Content-Type: application/json' localhost:9200/users_v2/_delete_by_query -d '{
"query": {
"match": {
"description_field": "bad user"
}
}
}'
To list down the indices
curl -L localhost:9200/_cat/indices
9200
default port[change the port if using some other port]
You will likely find all indices starting with logstash-yyyy-mm-dd
format(logstash-*)
You can see all the indices and use
To delete the indices and data trigger following command.
curl -XDELETE localhost:9200/index_name
(Which will remove the data and indices both).
#list all index: curl -XGET http://localhost:9200/_cat/indices?v
#delete index: curl -XDELETE 'localhost:9200/index_name'
#delete all indices: curl -XDELETE 'localhost:9200/_all'
#delete document : curl -XDELETE 'localhost:9200/index_name/type_name/document_id'
Install kibana. Kibana has a smarter dev tool which helps to build query easily.
Deleting the index will delete the mapping and type along. you can delete all rows by the following query
curl -XDELETE 'localhost:9200/twitter/tweet/_query?pretty' -d'
{
"query": {
"match_all":
}
}'
However for above query you need to install delete-by-query plugin as of Elasticsearch's 2.0.0-beta1 delete-by-query was removed from main api
Install delete-by-query plugin
sudo bin/plugin install delete-by-query
For more
http://blog.appliedinformaticsinc.com/how-to-delete-elasticsearch-data-records-by-dsl-query/
You can also use chrome extension elasticsearch-head to delete index
Source: Stackoverflow.com