elasticsearch 特殊命令

1. 重置備份

   
   

   curl -XPUT "http://localhost:9200/_settings" -d'

   {

     "number_of_replicas" : 2

   }'

2. 安全關閉

curl -XPUT http://localhost:9200/_cluster/settings -d'

{

    "transient" : {

        "cluster.routing.allocation.enable" : "none"

    }

}'

curl -XPUT http:// localhost:9200/_cluster/settings -d'

{

    "transient" : {

        "cluster.routing.allocation.enable" : "all"

    }

}'

3. 關閉自動刷新

大批量插入之前

# curl -XPUT http://127.0.0.1:9200/*-d'

{

  "settings" : {

    "refresh_interval": "-1"

  }

}'

大批量插入之后改回1

4. 索引別名

curl -XPOST 'http://localhost:9200/_aliases' -d '

    {

        "actions": [

            {"remove": {"index": "*", "alias": "*"}},

            {"add": {"index":"*", "alias": " *"}}

        ]

    }'

5. 手動分配分片

分配一個未分配的分片到指定節點。可以指定索引名和分片號。node參數指定分配到那個節點。allow_primary參數可以強制分配主分片，不過這樣可能導致數據丟失。

curl -s "http://localhost:9200/_cat/shards" | grep UNASSIGNED

curl 'localhost:9200/_nodes/process?pretty'

curl -XPOST 'localhost:9200/_cluster/reroute' -d '{

        "commands" : [ {

              "allocate" : {

                  "index" : "your_index_name",

                  "shard" : 1 (share index),

                  "node" : "AfUyuXmGTESHXpwi4OExxx(NODE 編碼)",

                  "allow_primary" : true

              }

            }

        ]

    }'