title: low disk watermark [??%] exceeded on
body: <p>I use Elasticsearch 1.4.4 in my development machine (a single notebook). Everything is set as default because I never changed any settings.</p>
  
  <p>When I start it, I usually get the following message: </p>
  
  <pre><code>[2015-10-27 09:38:31,588][INFO ][node                     ] [Milan] version[1.4.4], pid[33932], build[c88f77f/2015-02-19T13:05:36Z]
  [2015-10-27 09:38:31,588][INFO ][node                     ] [Milan] initializing ...
  [2015-10-27 09:38:31,592][INFO ][plugins                  ] [Milan] loaded [], sites []
  [2015-10-27 09:38:34,665][INFO ][node                     ] [Milan] initialized
  [2015-10-27 09:38:34,665][INFO ][node                     ] [Milan] starting ...
  [2015-10-27 09:38:34,849][INFO ][transport                ] [Milan] bound_address {inet[/0:0:0:0:0:0:0:0:9300]}, publish_address {inet[/10.81.1.108:9300]}
  [2015-10-27 09:38:35,022][INFO ][discovery                ] [Milan] elasticsearch/DZqnmWIZRpapZY_TPkkMBw
  [2015-10-27 09:38:38,787][INFO ][cluster.service          ] [Milan] new_master [Milan][DZqnmWIZRpapZY_TPkkMBw][THINKANDACT1301][inet[/10.81.1.108:9300]], reason: zen-disco-join (elected_as_master)
  [2015-10-27 09:38:38,908][INFO ][http                     ] [Milan] bound_address {inet[/0:0:0:0:0:0:0:0:9200]}, publish_address {inet[/10.81.1.108:9200]}
  [2015-10-27 09:38:38,908][INFO ][node                     ] [Milan] started
  [2015-10-27 09:38:39,220][INFO ][gateway                  ] [Milan] recovered [4] indices into cluster_state
  [2015-10-27 09:39:08,801][INFO ][cluster.routing.allocation.decider] [Milan] low disk watermark [15%] exceeded on [DZqnmWIZRpapZY_TPkkMBw][Milan] free: 58.6gb[12.6%], replicas will not be assigned to this node
  [2015-10-27 09:39:38,798][INFO ][cluster.routing.allocation.decider] [Milan] low disk watermark [15%] exceeded on [DZqnmWIZRpapZY_TPkkMBw][Milan] free: 58.6gb[12.6%], replicas will not be assigned to this node
  [2015-10-27 09:40:08,801][INFO ][cluster.routing.allocation.decider] [Milan] low disk watermark [15%] exceeded on [DZqnmWIZRpapZY_TPkkMBw][Milan] free: 58.6gb[12.6%], replicas will not be assigned to this node
  ....
  </code></pre>
  
  <p>I see a lot of these "low disk watermark ... exceeded on..." messages. What went wrong in my case? How to fix it? Thanks!</p>
  
  <p><strong>UPDATE</strong></p>
  
  <p>Before this post, I searched SO for related posts. I found one related to "high watermark..." and in that case, the disk space is low. In my case, I checked and <strong>there is still 56GB left on my disk.</strong></p>
  
  <p><strong>UPDATE</strong></p>
  
  <p>According to the input from Andrei Stefan, I need to change settings. Should I do it the following way:</p>
  
  <pre><code>curl -XPUT localhost:9200/_cluster/settings -d '{
      "transient" : {
          "cluster.routing.allocation.disk.threshold_enabled" : false
      }
  }'
  </code></pre>
  
  <p>Or is there any settings file I can edit to set it?</p>