ElasticSearch: Unassigned Shards, how to fix?

Question

I have an ES cluster with 4 nodes:

number_of_replicas: 1
search01 - master: false, data: false
search02 - master: true, data: true
search03 - master: false,          


        

Answer 1

The only thing that worked for me was changing the number_of_replicas (I had 2 replicas, so I changed it to 1 and then changed back to 2).

First:

PUT /myindex/_settings
{
    "index" : {
        "number_of_replicas" : 1
     }
}

Then:

PUT /myindex/_settings
{
    "index" : {
        "number_of_replicas" : 2
     }
}

(I Already asnwered it in this question)