elasticsearch 修改磁盤比例限制

es節點所在的磁盤空間不夠用的時候，es會將改節點上面的索引標位只讀，不能向改索引寫入數據，默認當磁盤空間超過85%，我們可以使用下面的命令調整磁盤空間比例為95%
[2020-12-02T10:23:24,775][WARN ][o.e.c.r.a.DiskThresholdMonitor] [Nii770G] flood stage disk watermark [95%] exceeded on [Nii770GyRDC4Xu99SOLKJw][Nii770G][C:\ELK\elasticsearch-6.2.4\elasticsearch-6.2.4\data\nodes\0] free: 2.5gb[3.1%], all indices on this node will marked read-only
PUT /_cluster/settings
{
  "transient": {
    "cluster.routing.allocation.disk.watermark.low": "90%",
    "cluster.routing.allocation.disk.watermark.high": "95%",
    "cluster.info.update.interval": "1m"
  }
}

persistent表示為永久修改，重啟以后也會保存設置

transient表示臨時修改，重啟以后不會保存設置

"cluster.info.update.interval": "1m"   #時間間隔 現在是1分鍾，默認是30s

1. PUT /_cluster/settings
2.  
   {
3.  
   "transient": {
4.  
   "cluster.routing.allocation.disk.watermark.low": "90%",
5.  
   "cluster.routing.allocation.disk.watermark.high": "95%",
6.  
   "cluster.info.update.interval": "1m"
7.  
   }
8.  
   }