使用 Telegraf 解析 JSON 的問題

Question

我想使用 Telegraf 從 swagger API 收集數據

這是我的 Telegraf.conf 中的 DS 定義

[[inputs.httpjson]]
  ## NOTE This plugin only reads numerical measurements, strings and booleans
  ## will be ignored.

  ## Name for the service being polled.  Will be appended to the name of the
  ## measurement e.g. "httpjson_webserver_stats".
  ##
  ## Deprecated (1.3.0): Use name_override, name_suffix, name_prefix instead.
  name = "ultimaker_status"

  ## URL of each server in the service's cluster
  servers = [
    "http://192.168.5.15/api/v1/printer/network",
  ]
  ## Set response_timeout (default 5 seconds)
  response_timeout = "15s"

  ## HTTP method to use: GET or POST (case-sensitive)
  method = "GET"

  ## Tags to extract from top-level of JSON server response.
   tag_keys = [
     "ethernet:connected"
   ]

  ## Optional TLS Config
  # tls_ca = "/etc/telegraf/ca.pem"
  # tls_cert = "/etc/telegraf/cert.pem"
  # tls_key = "/etc/telegraf/key.pem"
  ## Use TLS but skip chain & host verification
  # insecure_skip_verify = false

  ## HTTP Request Parameters (all values must be strings).  For "GET" requests, data
  ## will be included in the query.  For "POST" requests, data will be included
  ## in the request body as "x-www-form-urlencoded".
  # [inputs.httpjson.parameters]
  #   event_type = "cpu_spike"
  #   threshold = "0.75"

  ## HTTP Request Headers (all values must be strings).
  # [inputs.httpjson.headers]
  #   X-Auth-Token = "my-xauth-token"
  #   apiVersion = "v1"

對http://192.168.5.15/api/v1/printer/network的 HTTP 請求返回以下字符串

{“以太網”：{“連接”：真，“啟用”：真}，“wifi”：{“連接”：假，“啟用”：假，“模式”：“電纜”，“ssid”：“UM -NO-HOTSPOT-NAME-SET"}, "wifi_networks": []}

Telegraf --test 返回以下內容

httpjson_ultimaker_status,host=dmon-virtual-machine,server= http://192.168.5.15/api/v1/printer/network response_time=7.333277032 1551105770000000000

我希望字符串“連接”不是 1551105770000000000

我怎樣才能得到預期的結果

謝謝你的幫助

Answer 1

在帶有 json 插件的塊開頭的 telegraf.conf 文件中，它說：
“注意此插件僅讀取數值測量值，字符串和布爾值將被忽略。”

Answer 2

除非在 tag_key 或 json_string_fields 選項中指定，否則忽略 JSON 字符串。

也許你可以嘗試，比如

tag_keys = ["ethernet_connected"] json_string_fields = ["ethernet_connected"]

您可以在https://github.com/influxdata/telegraf/tree/master/plugins/parsers/json找到更多信息