Opening or closing an index

If you want to keep your data but save resources (memory or CPU), a good alternative to deleting indexes is to close them.

Elasticsearch allows you to open and close an index, putting it into online or offline mode.

Getting ready

You need an up-and-running Elasticsearch installation, as we described in the Downloading and installing Elasticsearch recipe in Chapter 1, Getting Started.

To execute these commands, HTTP clients can be used, such as curl (https://curl.haxx.se/), postman (https://www.getpostman.com/), or others. I suggest using the Kibana console as it provides code completion and better character escaping for Elasticsearch.

To execute the following commands correctly...