Managing dangling indices
In the case of a node failure, if there are not enough replicas, you can lose some shards (and the data within those shards).
Indices with missing shards are marked in red and they are put in read-only mode with issues in case you try to query the data.
In this situation, the only available option is to drop the broken index and recover them from the data or a backup. When the node that failed returns as active in the cluster, there will be some dangling indices (the orphan shards).
The APIs that we will look at in this recipe can be used to manage these indices.
Getting ready
You will need an up-and-running Elasticsearch installation, as we described in the Downloading and installing Elasticsearch recipe of Chapter 1, Getting Started.
To execute the commands in this recipe, you can use any HTTP client, such as curl (https://curl.haxx.se/), Postman (https://www.getpostman.com/), or others. I suggest using the Kibana console as it provides...
