修改新加节点，重新协调分片速度的配置

PUT _cluster/settings
{
        "transient" : {
            "cluster.routing.allocation.node_concurrent_recoveries":4,
            "cluster.routing.allocation.cluster_concurrent_rebalance":4,
            "cluster.routing.allocation.node_initial_primaries_recoveries":5,
            "indices.recovery.max_bytes_per_sec" : "400mb"
        }
}

参数说明:
cluster.routing.allocation.node_concurrent_recoveries: 每个node上允许rebalance的片数量。
cluster.routing.allocation.cluster_concurrent_rebalance: 用来控制均衡力度，允许集群内并发分片的rebalance数量，默认为2。
cluster.routing.allocation.node_initial_primaries_recoveries: 该参数用来控制节点重启时，允许同时恢复几个主分片。默认是 4 个。如果节点是多磁盘，且 IO 压力不大，可以适当加大。
indices.recovery.max_bytes_per_sec: 该参数用来控制节点恢复时的速率。默认是 40MB。显然是比较小的，建议加大

查看哪些index是yellow状态

GET _cat/indices

状态

green open delta_notification_2023.08.29      MX6DKLfRRRCFEKYjG0Ed1A 20 1      2151        0  15.5mb   7.9mb
green open .jd_es_auth                        CQUXQeKjS8OG5xnDJlfkMA  1 1         4        0  20.5kb  10.2kb
green open delta_notification_2023.08.28      Mn2x_us7RCaqjutxtj1qtg 20 1      5410        0  29.9mb  14.9mb
green open delta_notification_2023.08.27      JXqmuFXqQIqiFQMPdjGN0Q 20 1      8017        0  40.3mb  20.2mb
green open delta_notification_2023.08.26      XV9t8LC3RgafI1rj_sZKlA 20 1      6869        0  35.7mb  17.8mb
green open delta_notification_2023.08.25      Wot0nIYxRQaNygB8m0r7pA 20 1      4969        0  29.7mb  14.7mb
green open delta_notification_2023.08.24      ZOSzyLpkSiKN-WdiECHLtA 20 1      1966        0  15.9mb     8mb
green open delta_notification_2023.08.23      Q8FQvCT8RVyiCoYzmc88JQ 20 1      1987        0  15.8mb   8.1mb
green open delta_notification_2023.08.22      R31vNaR8So-ecErBsOVn-g 20 1      1919        0  15.1mb   7.4mb
green open delta_notification_2023.08.21      uAJXxKRwRKKJNGejAibrKQ 20 1      1640        0  13.9mb   6.8mb
green open delta_notification_2023.08.20      p7_mZk1sTyeSXreoQOiXmw 20 1      1632        0  13.4mb   6.7mb
green open delta_notification_2023.08.31      ApUKbz4vS-iTDS3v6TaiXQ 20 1      4322        0  26.1mb  12.9mb
green open delta_notification_2023.08.30      zJcLDS0RST2a0aS_OP7MGQ 20 1      2341        0  17.8mb     9mb
green open delta_warning_2022.06.27           QhfplpzxTi-cx2Mp4TwERg 10 1         6        0  88.5kb  44.2kb
green open .apm-agent-configuration           2EcSsHDnQDiEv3zmNLCJmw  1 1         0        0    416b    208b
green open delta_warning_2022.06.03           JyOoMw8FSwWA8uBvn5YHhQ 10 1        14        0   207kb 103.5kb
green open delta-monitor-2023.06.01           rMCTSsmBQz6ZxAd_HYp8Eg 20 1 129492070        0 134.4gb  67.2gb
green open delta_notification_2023.08.09      Crw34HOPTBKlJg5NHz4vAA 20 1      5362        0  29.2mb  14.3mb
green open delta_notification_2023.08.08      7WfSnvPFTGimzaxraADtJA 20 1      2283        0  16.2mb     8mb
green open delta_notification_2023.08.07      301jnQjMRYqVN4ak6yWvGQ 20 1      1702        0  13.1mb   6.5mb
green open delta_notification_2023.08.06      GBKjsPm3SKaJONUP35PVrw 20 1      2753        0  17.2mb   8.6mb
green open delta_notification_2023.08.05      EbAs3jLKSBaTsDCoJtUJSQ 20 1      2714        0  17.2mb   8.6mb

通过判断索引的状态是否都是green，来判断是否还分片是否就没有被均衡