Listing All Indexes in Elasticsearch Cluster
If you want to list all of the indexes within an Elasticsearch cluster, then there are a few ways to do just that. The following examples are going to assume the usage of cURL to issue HTTP requests, but any similar tool will do as well. It is also possible to use the Kibana plugin Sense, which provides you with a convenient user interface that is easier to use than the command line terminal.
The first way to do it uses the _cat API like below.
curl http://localhost:9200/_cat/indices?vThe v query parameter adds a header row to the output. Here is some sample output from the above command:
health status index pri rep docs.count docs.deleted store.size pri.store.size
yellow open .kibana 1 1 1 0 3.1kb 3.1kb
yellow open myindex 5 1 0 0 650b 650b
As you can see in the above example, this command also shows some useful information about the indexes, such as their health, number of shards, documents and more.
In contrast to the _cat API, the following commands return JSON instead of a “human friendly” output. Also, they do not provide any of the above information, so which command you should use depends on your use case, i.e. whether or not you need a JSON response (e.g. for rendering the output in your application) and if you need any of the information that the above command provides.
You can also use the _aliases API, which will also return any aliases that each index may have.
curl http://localhost:9200/_aliasesBelow is some sample output for the above command.
{".kibana":{"aliases":{}},"myindex":{"aliases":{}}}Note that if you want pretty JSON to be returned so that it is easier to read, simply append ?pretty to the command, like this: curl http://localhost:9200/_aliases?pretty. This will give the following result.
{
".kibana" : {
"aliases" : { }
},
"myindex" : {
"aliases" : { }
}
}That’s all it takes to list all indexes on an Elasticsearch server or cluster.
Here is what you will learn:
- The architecture of Elasticsearch
- Mappings and analyzers
- Many kinds of search queries (simple and advanced alike)
- Aggregations, stemming, auto-completion, pagination, filters, fuzzy searches, etc.
- ... and much more!
4 comments on »Listing All Indexes in Elasticsearch Cluster«
Hi Anderson,
thanks a lot for input regarding the installation of ES on Mac . It was really helpfull and very clear.
I have a question: today is my first day to start learning ES. Could you recommand to me some books or how i can learn ES efficiently and quickly.
Thanks again and best regards
Mohammed
Hello, Mohammed,
Thank you for your feedback – I am happy that it helped!
Well, it just so happens that I made an online course on Elasticsearch, which you can find here. You are welcome to send me a message on this site, and I will provide you with a 50% off coupon code. :-)
why dont i get any output when i try to view data in elasticsearch using curl request
HI Andersen,
I checked your udemy course using the link you have provided. You mentioned for 50% off coupon. Can you please help me with that.