12 使用Prometheus数据发现

概述

Prometheus提供的数据格式可以低级别发现使用

查看Prometheus检查的详细数据是如何在Zabbix中实现的。

配置

低级发现规则应该作为监控项依赖创建到Prometheus数据的HTTP监控项中。

Prometheus转JSON

在发现规则中，进入Preprocessing选项卡，并选择Prometheus to JSON Preprocessing选项。发现需要JSON格式的数据，而Prometheus to JSON预处理选项将会返回正确的数据，包含以下属性:

• metric name

• metric value

• help (if present)

• type (if present)

• labels (if present)

• raw line

例如,查询 wmi_logical_disk_free_bytes:

从Prometheus获取数据:

# HELP wmi_logical_disk_free_bytes Free space in bytes (LogicalDisk.PercentFreeSpace)
# TYPE wmi_logical_disk_free_bytes gauge
wmi_logical_disk_free_bytes{volume="C:"} 3.5180249088e+11
wmi_logical_disk_free_bytes{volume="D:"} 2.627731456e+09
wmi_logical_disk_free_bytes{volume="HarddiskVolume4"} 4.59276288e+08

返回:

[
    {
        "name": "wmi_logical_disk_free_bytes",
        "help": "Free space in bytes (LogicalDisk.PercentFreeSpace)",
        "type": "gauge",
        "labels": {
            "volume": "C:"
         },
        "value": "3.5180249088e+11",
        "line_raw": "wmi_logical_disk_free_bytes{volume=\"C:\"} 3.5180249088e+11"
    },
    {
        "name": "wmi_logical_disk_free_bytes",
        "help": "Free space in bytes (LogicalDisk.PercentFreeSpace)",
        "type": "gauge",
        "labels": {
            "volume": "D:"
         },
        "value": "2.627731456e+09",
        "line_raw": "wmi_logical_disk_free_bytes{volume=\"D:\"} 2.627731456e+09"
    },
    {
        "name": "wmi_logical_disk_free_bytes",
        "help": "Free space in bytes (LogicalDisk.PercentFreeSpace)",
        "type": "gauge",
        "labels": {
            "volume": "HarddiskVolume4"
         },
        "value": "4.59276288e+08",
        "line_raw": "wmi_logical_disk_free_bytes{volume=\"HarddiskVolume4\"} 4.59276288e+08"
    }
]

映射LLD宏

接下来，你必须进入LLD宏标签，并创建以下映射:

{#VOLUME}=$.labels['volume']
{#METRIC}=$['name']
{#HELP}=$['help']

监控项原型

你可能想要这样创建一个监控项原型:

与预处理选项: