Elasticsearch 集群在添加节点后不重新平衡

Question

我有一个包含 2 个节点的集群，我又添加了 3 个加入集群的节点。我能够向他们发送请求并获得结果。但是，当我检查时，他们没有任何文件。我有一个 5 分片索引，我期望每个节点都会收到一个分片？

{
    cluster_name: "es-poc",
    status: "green",
    timed_out: false,
    number_of_nodes: 5,
    number_of_data_nodes: 5,
    active_primary_shards: 5,
    active_shards: 10,
    relocating_shards: 0,
    initializing_shards: 0,
    unassigned_shards: 0,
    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: 100
}

Answer 1

感谢回复，问题是所有节点的版本不一样，现有成员有2.3.4，而新成员有2.3.3。

我通过这样做发现了这一点:

POST _cluster/reroute?explain
{
  "commands": [
    {
       "move" :
            {
              "index" : "event4", "shard" : 0,
              "from_node" : "Toad", "to_node" : "Amelia Voght"
            }
        }

  ]
}

在回复中我在解释部分看到了这个

 {
               "decider": "node_version",
               "decision": "NO",
               "explanation": "target node version [2.3.3] is older than source node version [2.3.4]"
            },