An Alarm Is Displayed When I Access Cerebro Through a Single-Node Cluster

Possible Causes

By default, indexes in single-node clusters have copies that cannot deliver requests.

Solution

On the Dev Tools page of Kibana, run the following commands to change the number of index copies to 0:

PUT _all/_settings
{
  "index": {
    "number_of_replicas": 0
  }
}