Cluster RED unassigned shards CLUSTER_RECOVERED

Elastic Stack Elasticsearch
1

Hi, My cluster status is showing in RED status. Many of my indices shown in RED status. I quried explain api and it results as below:

{
  "index" : "abc-2019.04.24",
  "shard" : 2,
  "primary" : true,
  "current_state" : "unassigned",
  "unassigned_info" : {
    "reason" : "CLUSTER_RECOVERED",
    "at" : "2020-04-15T09:26:02.854Z",
    "last_allocation_status" : "no_valid_shard_copy"
  },
  "can_allocate" : "no_valid_shard_copy",
  "allocate_explanation" : "cannot allocate because a previous copy of the primary shard existed but can no longer be found on the nodes in the cluster",
  "node_allocation_decisions" : [
    {
      "node_id" : "xyz",
      "node_name" : "abcd",
      "transport_address" : "4.72.36.194:9300",
      "node_decision" : "no",
      "store" : {
        "found" : false
      }
    }
  ]
}

_cat/indices:

abc-2019.04.24                 2 p UNASSIGNED CLUSTER_RECOVERED
abc-2019.04.24                 2 r UNASSIGNED CLUSTER_RECOVERED
abc-2019.04.24                 4 p UNASSIGNED CLUSTER_RECOVERED
abc-2019.04.24                 4 r UNASSIGNED CLUSTER_RECOVERED
abc-2019.04.24                 1 p UNASSIGNED CLUSTER_RECOVERED
abc-2019.04.24                 1 r UNASSIGNED CLUSTER_RECOVERED
abc-2019.04.24                 3 p UNASSIGNED CLUSTER_RECOVERED
abc-2019.04.24                 3 r UNASSIGNED CLUSTER_RECOVERED
abc-2019.04.24                 0 p UNASSIGNED CLUSTER_RECOVERED
abc-2019.04.24                 0 r UNASSIGNED CLUSTER_RECOVERED

I dont want to loose the data. Kindly help restore my cluster health.

2

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