prometheus — 基於文件的服務發現

基於文件的服務發現方式不須要依賴其餘平臺與第三方服務，用戶只需將要新的target信息以yaml或json文件格式添加到target文件中 ，prometheus會按期從指定文件中讀取target信息並更新。

target文件

vim /usr/local/prometheus-2.1/targets.json
[
  {
    "targets": [ "192.168.20.136:9100"],
    "labels": {
      "instance": "nodeone",
      "job": "expor_test1"
    }
  },

  {
    "targets": [ "localhost:9090"],
    "labels": {
      "job": "prometheus"
    }
  },

  {
    "targets": [ "192.168.20.137:9100"],
    "labels": {
      "instance": "nodetwo",
      "job": "expor_test2"
    }
  }
]

Prometheus配置文件

global:
  scrape_interval: 15s
  evaluation_interval: 15s

alerting:
  alertmanagers:
  - static_configs:
    - targets: ['localhost:9093']

rule_files:
# - "/usr/local/prometheus-2.1/rule.yml"
# - "/usr/local/prometheus-2.1/rule2.yml"

scrape_configs:

- job_name: 'file_ds'   #此處定義了自動發現的採集任務
  file_sd_configs:
    - files:
      - targets.json         #採集文件名

啓動prometheus

./prometheus &

查看web界面targets 出現targets.json 所定義的3個job。