ElasticSearch具有兩個節點（不同計算機）的未分配碎片，1個主要兩個新實例

Question

我啓動了兩個乾淨的elasticsearch實例（節點），沒有數據，兩個不同的機器（一個窗口，一個osx）。他們成功發現了對方。一個是node.master：false。兩者都是node.data：true。我創建了Kibana（創建te .kibana索引），並創建了測試索引（test），number_of_replicas = 1，並且每個索引和集羣的狀態都是黃色，我相信這是因爲未分配的碎片。我不知道如何讓未分配的碎片來解決。

在試圖迫使碎片我得到以下錯誤的複製：

shard cannot be allocated on same node [tNUHIE6cTHO6h37P_s3m7w] it already exists on 

一些細節：

_cat /節點伏γ：

host   ip  heap.percent ram.percent load node.role master name    
192.168.1.99 192.168.1.99  2   81 1.95 d   *  node1  
192.168.1.2 192.168.1.2  13   46 -1.00 d   -  node2 

節點1：_cluster/health

{ 
"cluster_name": "elasticsearch", 
"status": "yellow", 
"timed_out": false, 
"number_of_nodes": 2, 
"number_of_data_nodes": 2, 
"active_primary_shards": 6, 
"active_shards": 9, 
"relocating_shards": 0, 
"initializing_shards": 0, 
"unassigned_shards": 3, 
"delayed_unassigned_shards": 0, 
"number_of_pending_tasks": 0, 
"number_of_in_flight_fetch": 0, 
"task_max_waiting_in_queue_millis": 0, 
"active_shards_percent_as_number": 75 

}

有在日誌中沒有任何錯誤，但如果我運行：

_cluster /重路由漂亮

{ "commands" : [ { "allocate" : { "index" : "test", "shard" : 1, "node" : "node2" } } ] 
} 

我得到如下回應：

{ "error": { 
    "root_cause": [ 
    { 
     "type": "illegal_argument_exception", 
     "reason": "[allocate] allocation of [test][1] on node { node2}{tNUHIE6cTHO6h37P_s3m7w}{192.168.1.2}{192.168.1.2:9300}{master=false} is not allowed, 
     reason: [YES(target node version [2.1.1] is same or newer than source node version [2.1.1])] 
     [YES(enough disk for shard on node, free: [111.6gb])] 
     [YES(shard not primary or relocation disabled)] 
     [YES(primary is already active)][YES(node passes include/exclude/require filters)] 
     [YES(allocation disabling is ignored)] 
     [NO(shard cannot be allocated on same node [tNUHIE6cTHO6h37P_s3m7w] it already exists on)] 
     [YES(total shard limit disabled: [index: -1, cluster: -1] <= 0)][YES(below shard recovery limit of [2])][YES(no allocation awareness enabled)][YES(allocation disabling is ignored)]" 
    } 
    ], 
    ... 
    "status": 400 
} 

_cat /碎片？v

index shard prirep state  docs store ip   node   
test  3  p  STARTED  0 130b 192.168.1.2 node2 
test  3  r  UNASSIGNED           
test  4  r  STARTED  0 130b 192.168.1.2 node2 
test  4  p  STARTED  0 130b 192.168.1.99 node1 
test  1  p  STARTED  0 130b 192.168.1.2 node2 
test  1  r  UNASSIGNED          
test  2  r  STARTED  0 130b 192.168.1.2 node2 
test  2  p  STARTED  0 130b 192.168.1.99 node1 
test  0  r  STARTED  0 130b 192.168.1.2 node2 
test  0  p  STARTED  0 130b 192.168.1.99 node1  
.kibana 0 p  STARTED  1 3.1kb 192.168.1.2 node2 
.kibana 0 r  UNASSIGNED   

爲了解決這個問題，任何對新手的幫助都會很有幫助。

Answer 1

您只能安全地重新路由副本碎片。 GET _cat/shards?v清楚地顯示test索引的ID1的分片（主）已經分配在node2上。您不能在已分配的同一節點上分配碎片。這正是_cluster/reroute命令的輸出告訴你的。不要在node2上分配，而要在node1上分配。嘗試下面的命令：

POST _cluster/reroute?explain 
{ 
    "commands": [ 
     { 
     "allocate": { 
      "index": "test", 
      "shard": 1, 
      "node": "node1" 
     } 
     }, 
     { 
     "allocate": { 
      "index": "test", 
      "shard": 2, 
      "node": "node1" 
     } 
     } 
    ] 
} 

這將嘗試分配兩個未分配的副本碎片。還請注意explain選項。該命令的響應將詳細解釋爲什麼命令成功或失敗，並且在調試時非常方便，如果命令失敗。