elasticsearch 修改磁盘比例限制

es节点所在的磁盘空间不够用的时候，es会将改节点上面的索引标位只读，不能向改索引写入数据，默认当磁盘空间超过85%，我们可以使用下面的命令调整磁盘空间比例为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表示为永久修改，重启以后也会保存设置

transient表示临时修改，重启以后不会保存设置

"cluster.info.update.interval": "1m"   #时间间隔 现在是1分钟，默认是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.  
   }