ES错误：retrying failed action with response code: 503 ({"type"=>"unavailable_shards_exception"

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本文记录了解决Elasticsearch中索引保存失败的问题，包括检查集群健康状态、定位异常索引并删除等步骤。

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最近ES里面有个索引一直保存，错误信息如下：

[2019-04-03T09:54:15,328][INFO ][logstash.outputs.elasticsearch] retrying failed action with response code: 503 ({"type"=>"unavailable_shards_exception", "reason"=>"[gps_lte-mode-2019.04.03][1] primary shard is not active Timeout: [1m], request: [BulkShardRequest [[gps_lte-mode-2019.04.03][1]] containing [8] requests]"})
[2019-04-03T09:54:15,328][INFO ][logstash.outputs.elasticsearch] Retrying individual bulk actions that failed or were rejected by the previous bulk request. {:count=>25}

解决问题过程和方式：

一、查看集群健康状态：

发现健康状态是red

[root@netmgmt-prod-elk-03 ~]#  curl '10.7.1.8:9200/_cluster/health?pretty'
{
  "cluster_name" : "es-e679l179",
  "status" : "red",
  "timed_out" : false,
  "number_of_nodes" : 6,
  "number_of_data_nodes" : 3,
  "active_primary_shards" : 5831,
  "active_shards" : 11422,
  "relocating_shards" : 0,
  "initializing_shards" : 0,
  "unassigned_shards" : 250,
  "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" : 97.8581220013708
}

二、查看异常的index

发现有个索引异常了，直接进行删除即可。

[root@netmgmt-prod-elk-03 ~]# curl http://'10.7.1.8:9200/_cat/indices' | grep red
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
  1  144k    1  2704    0     0    907      0  0:02:43  0:00:02  0:02:41   907
red    open gps_lte-mode-2019.04.03 _N2IkwVeSxiP4s1gMyFQgw 5 1

删除命名：

curl -XDELETE 'http://10.7.1.8:9200/gps_lte-mode-2019.04.03'