unity2promgo

Prometheus Exporter for DellEMC Unity

Unity2Prom is a tool written in Go for exporting usage and performance metrics from Dell EMC Unity storage arrays to prometheus.

For RestAPI connectivity to the different Unity arrays gounity by Equelin is used.

Configuration

Configure the Exporter

Before starting the exporter it is required to update config.json with values specific to your environment:

{
  "exporter": {
    "port":     8080,
    "interval": 60,
    "pools": true,
    "storage_resources": true,
    "metrics": ["sp_cifs_global_basic_writeBytesRate", "sp_cifs_smb1_usage_currentConnections","sp_net_device_pktsInRate","sp_net_device_pktsOut"]
  },
  "unitys": [
    {
      "ip": "192.168.2.190",
      "port": "",
      "user": "monitor",
      "password": "Monitor123!"
    }
  ]
}

Unitys* is a list of all arrays for which data will be collected. For the user it is sufficient to be a Operator User with read-only access.

Exporter conifgures the exporter and specifies the data that will be collected. !!!The interval in which metrics are collected should match the Prometheus scraping interval!!! Metrics can be added by adding the metric's prom_path to the metrics array. Possible metrics and their description can be found in unity_metrics.json:

  {
    "id": 10170,
    "name": "Read_Hit_Only Miss requests",
    "path": "sp.*.blockCache.flu.*.readHitOnlyMiss",
    "prom_path": "sp_blockCache_flu_readHitOnlyMiss",
    "type": 3,
    "description": "Number of Read_Hit_Only Miss requests",
    "isHistoricalAvailable": false,
    "isRealtimeAvailable": true,
    "unitDisplayString": "requests"
  },

Configure Prometheus Scrape Job

In order to configure Prometheus to scrape the newly added metric it is requried to add another scrape_config entriy to the promehteus configuration file:

scrape_configs:
- job_name: unity2go  
  scrape_interval: 60s
  scrape_timeout: 10s
  metrics_path: /metrics
  scheme: http
  static_configs:
  - targets:
    - <unity.fqdn|ip_adress>:9090    

Installation

After installing go and cloning this repositroy it is requried to install the following go dependencies:

• github.com/equelin/gounity
• github.com/prometheus/client_golang/prometheus
• github.com/prometheus/client_golang/prometheus/promhttp

This can be done using go get -u <dependency_name>

Start the collector In the project base directory run go build go run main.go utils.go unitycollector.go