Elasticsearch关于unassigned shards修复

ES 版本： 5.2.1

步骤：

• curl localhost:9200/_cat/shards > shards
• 跑脚本：nohup python recovery.py &
  ### 注意：跑脚本过程会返回大量json，时间较长，请注意放入后台
• 查看修复shard进度：curl 127.0.0.1:9200/_cat/recovery/你修复shard对应的索引
• 结果： 找到索引对应的shard，看到existing_store done说明已经从本地修复

     index 19 268ms existing_store done n/a        n/a                    10.0.58.67 node_name

#!/usr/bin/env python#name: recovery.pyimport requestsimport jsonhost = "http://localhost:9200/_cluster/allocation/explain"s= requests.Session()def reroute_shard(index,shard,node):    data = {    "commands" : [        {          "allocate_stale_primary" : {              "index" : index, "shard" : shard, "node" : node, "accept_data_loss": True          }        }    ]   }    print data    url = "http://localhost:9200/_cluster/reroute"    res = s.post(url,json=data)    print resdef get_node(line):    if "UNASSIGNED" in line:        line = line.split()        index = line[0]        shard = line[1]        if line[2] != "p":            return        body = {           "index": index,           "shard": shard,           "primary": True               }        res = s.get(host, json = body)        for store in res.json().get("node_allocation_decisions"):            if store.get("store").get("allocation_id"):               node_name = store.get("node_name")        reroute_shard(index,shard,node_name)    else:        returnwith open("shards", 'rb') as f:    map(get_node,f)

相关文档：
https://www.elastic.co/guide/en/elasticsearch/reference/5.2/cluster-reroute.html
https://www.elastic.co/guide/en/elasticsearch/reference/5.2/cluster-allocation-explain.html