elasticsearch报错“blocked by: [TOO_MANY_REQUESTS/12/disk usage exceeded flood-stage watermark, index has read-only-all”

解决办法：

1、扩充磁盘；

2、

kibana中
PUT _all/_settings
{
  "index.blocks.read_only_allow_delete": null
}
shell中
curl -XPUT  http://localhost:9200/_all/_settings -H 'Content-Type: application/json' -d '
{
  "index.blocks.read_only_allow_delete": null
}
'