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Access Statistics and Traffic Control Information Query

Updated on 2024-12-02 GMT+08:00

Flow control can be implemented via an independent API.

Procedure

  1. Log in to the CSS management console.
  2. Choose Clusters in the navigation pane. On the Clusters page, locate the target cluster and click Access Kibana in the Operation column.
  3. In the navigation pane on the left, choose Dev Tools and run the commands to query traffic control information.
    • Check the traffic control status of all nodes.
      GET /_nodes/stats/filter/v2
    • View traffic control details of all nodes.
      GET /_nodes/stats/filter/v2?detail
    • View the traffic control status of a specific node.
      GET /_nodes/{nodeId}/stats/filter/v2

      {nodeId} indicates the ID of the node you want to check.

      Example response:

      {
        "_nodes" : {
          "total" : 1,
          "successful" : 1,
          "failed" : 0
        },
        "cluster_name" : "css-xxxx",
        "nodes" : {
          "d3qnVIpPTtSoadkV0LQEkA" : {
            "name" : "css-xxxx-ess-esn-1-1",
            "host" : "192.168.x.x",
            "timestamp" : 1672236425112,
            "flow_control" : {
              "http" : {
                "current_connect" : 52,
                "rejected_concurrent" : 0,
                "rejected_rate" : 0,
                "rejected_black" : 0,
                "rejected_breaker" : 0
              },
              "access_items" : [
                {
                  "remote_address" : "10.0.0.x",
                  "search_count" : 0,
                  "bulk_count" : 0,
                  "other_count" : 4
                }
              ],
              "holding_requests" : 0
            }
          }
        }
      }
      Table 1 Response parameters

      Parameter

      Description

      current_connect

      Number of HTTP connections of a node, which is recorded even if flow control is disabled. This value is equal to the current_open value of GET /_nodes/stats/http API. It includes the current client connections of nodes.

      rejected_concurrent

      Number of concurrent connections rejected during HTTP flow control. This value is not cleared when HTTP flow control is disabled.

      rejected_rate

      Number of new connections rejected during HTTP flow control. This value is not cleared when HTTP flow control is disabled.

      rejected_black

      Number of requests rejected based on the blacklist during HTTP flow control. This value is not cleared when HTTP flow control is disabled.

      rejected_breaker

      Number of rejected new connections after one-click traffic blocking is enabled.

      remote_address

      IP addresses and the number of requests.

      search_count

      Number of times that a client accessed a database using _search and _msearch.

      bulk_count

      Number of times that a client accessed a database using _bulk.

      other_count

      Number of times that a client accessed a database using other requests.

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