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
} 
}