hadoop►elasticsearch►elasticsearch safe restart

elasticsearch safe restart

安全重启elasticsearch节点

  1. 刷新到磁盘

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    [root@ip-172-31-90-193 ~]# curl -XGET http://172.31.90.193:9200/_flush
    {"_shards":{"total":152,"successful":152,"failed":0}}

  2. 先暂停集群的shard自动均衡

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    [root@ip-172-31-90-193 ~]# curl -XPUT http://172.31.90.193:9200/_cluster/settings -d '
    > {
    >     "transient" : {
    >         "cluster.routing.allocation.enable" : "none"
    >     }
    > }'
    {"acknowledged":true,"persistent":{},"transient":{"cluster":{"routing":{"allocation":{"enable":"none"}}}}}

  3. 停止node节点

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    [root@ip-172-31-90-193 ~]# curl -XGET http://172.31.90.193:9200/_cat/nodes?v
    host          ip            heap.percent ram.percent load node.role master name       
    172.31.90.193 172.31.90.193           34          99 2.07 d         *      Molten Man
    172.31.90.45  172.31.90.45            43          99 0.75 d         m      node-2  

    [root@ip-172-31-90-193 ~]# curl -XPOST http://192.168.1.3:9200/_cluster/nodes/_local/_shutdown

  4. 启动node节点

  5. 开启集群的shard自动均衡

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    [root@ip-172-31-90-193 ~]# curl -XPUT http://172.31.90.193:9200/_cluster/settings -d'
    > {
    >     "transient" : {
    >         "cluster.routing.allocation.enable" : "all"
    >     }
    > }'
    {"acknowledged":true,"persistent":{},"transient":{"cluster":{"routing":{"allocation":{"enable":"all"}}}}}