Elasticsearch报错Validation Failed: 1: this action would add [2] total shards, but this cluster currently has [999]/[1000] maximum shards open

1.故障现象
elasticsearch报错

Validation Failed: 1: this action would add [2] total shards, but this cluster currently has [999]/[1000] maximum shards open

2.故障原因
Elasticsearch分片不足
3.解决方法
查看现有分片数

# curl -XGET -s http://172.16.5.103:9200/_cat/shards?v|wc -l 

查看默认分片数
显示为空

# curl -XGET http://172.16.5.103:9200/_cluster/settings?pretty
{
  "persistent" : {
    "cluster" : {
      "max_shards_per_node" : ""
    }
  },

设置分片数

# curl -XPUT -H "Content-Type:application/json" -d '{"persistent":{"cluster":{"max_shards_per_node":10000}}}' 'http://172.16.5.104:9200/_cluster/settings'

再次查看

# curl -XGET http://172.16.5.103:9200/_cluster/settings?pretty
{
  "persistent" : {
    "cluster" : {
      "max_shards_per_node" : "10000"
    }
  },

• 以上设置在重启elasticsearch后依然生效
• 删除索引也可以减少分片数

如果是应用报错则重启对应应用或pod