troubleshoot-elk

[root@ip-10-91-41-215 elk]# curl -XGET 'http://localhost:9200/_cluster/allocation/explain' | jq
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   728  100   728    0     0    728      0  0:00:01 --:--:--  0:00:01  118k
{
  "index": "fluentd-20181229",
  "shard": 4,
  "primary": false,
  "current_state": "unassigned",
  "unassigned_info": {
    "reason": "CLUSTER_RECOVERED",
    "at": "2018-12-29T12:06:12.981Z",
    "last_allocation_status": "no_attempt"
  },
  "can_allocate": "no",
  "allocate_explanation": "cannot allocate because allocation is not permitted to any of the nodes",
  "node_allocation_decisions": [
    {
      "node_id": "tOWYtclcTCiUpAsHlOUHAA",
      "node_name": "tOWYtcl",
      "transport_address": "127.0.0.1:9300",
      "node_decision": "no",
      "deciders": [
        {
          "decider": "same_shard",
          "decision": "NO",
          "explanation": "the shard cannot be allocated to the same node on which a copy of the shard already exists [[fluentd-20181229][4], node[tOWYtclcTCiUpAsHlOUHAA], [P], s[STARTED], a[id=lsTXB0E0SqWi1AuB9ySH9A]]"
        }
      ]
    }
  ]
}

[root@ip-10-91-41-215 elk]# curl -XGET 'localhost:9200/_cluster/health?pretty'
{
  "cluster_name" : "elasticsearch",
  "status" : "yellow",
  "timed_out" : false,
  "number_of_nodes" : 1,
  "number_of_data_nodes" : 1,
  "active_primary_shards" : 51,
  "active_shards" : 51,
  "relocating_shards" : 0,
  "initializing_shards" : 0,
  "unassigned_shards" : 5,
  "delayed_unassigned_shards" : 0,
  "number_of_pending_tasks" : 0,
  "number_of_in_flight_fetch" : 0,
  "task_max_waiting_in_queue_millis" : 0,
  "active_shards_percent_as_number" : 91.07142857142857
}