关于一些es操作指南

查看节点列表

curl -XGET -u elastic:xxxxx localhost:9200/_cat/nodes

查看节点详情

curl -u elastic:xxxxx http://localhost:9200/_nodes/process?pretty

查看节点健康状态

curl -u elastic:xxxxx http://localhost:9200/_cat/health?v

查看shards 分片分配情况和索引状态

curl -XGET -s -u elastic:xxxxx http://localhost:9200/_cat/shards

查看集群错误原因和索引

curl -u elastic:xxxxx 'localhost:9200/_cluster/allocation/explain?pretty'

调整恢复线程 为 8

curl -X PUT -u elastic:xxxxx http://localhost:9200/_cluster/settings -H 'Content-Type: application/json' -d'
{
    "persistent": {
        "cluster.routing.allocation.node_concurrent_recoveries": 8,
        "indices.recovery.max_bytes_per_sec": "40mb"
    }
}
'

从有数据的节点进行索引恢复

curl -H 'Content-Type: application/json' \
    -s -u elastic:xxxxx  -XPOST '127.0.0.1:9200/_cluster/reroute?pretty' -d '{
    "commands" : [ {
        "allocate_stale_primary" :
            {
              "index" : "xxxxx-2022.04.02", "shard" : 0,
              "node" : "nAihxBOdR2Gkm2vFeHKvEA",
              "accept_data_loss" : true
            }
        }
    ]
}'

参考链接
[es疑难1]（https://stackoverflow.com/questions/58758088/elasticsearch-node-failure）
[数据恢复]（https://blog.csdn.net/TuDestiny/article/details/103479061）