Monitor infrastructure

Grafana integrations

Integrations reference

MinIO

Grafana Cloud

MinIO integration for Grafana Cloud

MinIO is a Kubernetes-native high-performance object storage server which is designed for large-scale private cloud infrastructure and compatible with Amazon S3.

This integration includes 2 useful alerts and 1 pre-built dashboard to help monitor and visualize MinIO metrics.

Before you begin

By default, the agent configuration expects the MINIO_PROMETHEUS_AUTH_TYPE to be set to ‘public’.

If you choose not to set this flag you will need to generate a bearer_token with mc admin prometheus generate <alias> command to generate the scrape config compatible with Grafana Alloy. To learn more, see monitoring minio docs.

Install MinIO integration for Grafana Cloud

In your Grafana Cloud stack, click Connections in the left-hand menu.
Find MinIO and click its tile to open the integration.
Review the prerequisites in the Configuration Details tab and set up Grafana Agent to send MinIO metrics to your Grafana Cloud instance.
Click Install to add this integration’s pre-built dashboard and alerts to your Grafana Cloud instance, and you can start monitoring your MinIO setup.

Configuration snippets for Grafana Alloy

Simple mode

These snippets are configured to scrape a single MinIO instance running locally with default ports.

First, manually copy and append the following snippets into your alloy configuration file.

Metrics snippets

discovery.relabel "metrics_integrations_integrations_minio" {
	targets = [{
		__address__ = "localhost:9000",
	}]

	rule {
		target_label = "instance"
		replacement  = constants.hostname
	}
}

prometheus.scrape "metrics_integrations_integrations_minio" {
	targets      = discovery.relabel.metrics_integrations_integrations_minio.output
	forward_to   = [prometheus.remote_write.metrics_service.receiver]
	job_name     = "integrations/minio"
	metrics_path = "/minio/prometheus/metrics"
}

Advanced mode

The following snippets provide examples to guide you through the configuration process.

To instruct Grafana Alloy to scrape your MinIO instances, manually copy and append the snippets to your alloy configuration file, then follow subsequent instructions.

Advanced metrics snippets

discovery.relabel "metrics_integrations_integrations_minio" {
	targets = [{
		__address__ = "localhost:9000",
	}]

	rule {
		target_label = "instance"
		replacement  = constants.hostname
	}
}

prometheus.scrape "metrics_integrations_integrations_minio" {
	targets      = discovery.relabel.metrics_integrations_integrations_minio.output
	forward_to   = [prometheus.remote_write.metrics_service.receiver]
	job_name     = "integrations/minio"
	metrics_path = "/minio/prometheus/metrics"
}

To monitor your MinIO instance, you must use a discovery.relabel component to discover your MinIO Prometheus endpoint and apply appropriate labels, followed by a prometheus.scrape component to scrape it.

Configure the following properties within each discovery.relabel component:

__address__: The address to your MinIO Prometheus metrics endpoint.
instance label: constants.hostname sets the instance label to your Grafana Alloy server hostname. If that is not suitable, change it to a value uniquely identifies this MinIO instance.

If you have multiple MinIO servers to scrape, configure one discovery.relabel for each and scrape them by including each under targets within the prometheus.scrape component.

Grafana Agent static configuration (deprecated)

The following section shows configuration for running Grafana Agent in static mode which is deprecated. You should use Grafana Alloy for all new deployments.

Before you begin with Grafana Agent static

By default, the agent configuration expects the MINIO_PROMETHEUS_AUTH_TYPE to be set to ‘public’.

Install MinIO integration

In your Grafana Cloud stack, click Connections in the left-hand menu.
Find MinIO and click its tile to open the integration.
Review the prerequisites in the Configuration Details tab and set up Grafana Agent to send MinIO metrics to your Grafana Cloud instance.
Click Install to add this integration’s pre-built dashboard and alerts to your Grafana Cloud instance, and you can start monitoring your MinIO setup.

Post-install configuration for the MinIO integration

This integration uses MinIO metrics exposed at /minio/prometheus/metrics endpoint. To scrape it, add the provided snippet to your agent configuration file.

Make sure to change targets in the snippet according to your environment.

Configuration snippets for Grafana Agent

Below metrics.configs.scrape_configs, insert the following lines and change the URLs according to your environment:

    - job_name: 'integrations/minio'
      metrics_path: /minio/prometheus/metrics
      relabel_configs:
        - replacement: '<your-instance-name>'
          target_label: instance
      static_configs:
        - targets: ['localhost:9000']

Full example configuration for Grafana Agent

Refer to the following Grafana Agent configuration for a complete example that contains all the snippets used for the MinIO integration. This example also includes metrics that are sent to monitor your Grafana Agent instance.

integrations:
  prometheus_remote_write:
  - basic_auth:
      password: <your_prom_pass>
      username: <your_prom_user>
    url: <your_prom_url>
  agent:
    enabled: true
    relabel_configs:
    - action: replace
      source_labels:
      - agent_hostname
      target_label: instance
    - action: replace
      target_label: job
      replacement: "integrations/agent-check"
    metric_relabel_configs:
    - action: keep
      regex: (prometheus_target_sync_length_seconds_sum|prometheus_target_scrapes_.*|prometheus_target_interval.*|prometheus_sd_discovered_targets|agent_build.*|agent_wal_samples_appended_total|process_start_time_seconds)
      source_labels:
      - __name__
  # Add here any snippet that belongs to the `integrations` section.
  # For a correct indentation, paste snippets copied from Grafana Cloud at the beginning of the line.
logs:
  configs:
  - clients:
    - basic_auth:
        password: <your_loki_pass>
        username: <your_loki_user>
      url: <your_loki_url>
    name: integrations
    positions:
      filename: /tmp/positions.yaml
    scrape_configs:
      # Add here any snippet that belongs to the `logs.configs.scrape_configs` section.
      # For a correct indentation, paste snippets copied from Grafana Cloud at the beginning of the line.
metrics:
  configs:
  - name: integrations
    remote_write:
    - basic_auth:
        password: <your_prom_pass>
        username: <your_prom_user>
      url: <your_prom_url>
    scrape_configs:
      # Add here any snippet that belongs to the `metrics.configs.scrape_configs` section.
      # For a correct indentation, paste snippets copied from Grafana Cloud at the beginning of the line.
    - job_name: 'integrations/minio'
      metrics_path: /minio/prometheus/metrics
      relabel_configs:
        - replacement: '<your-instance-name>'
          target_label: instance
      static_configs:
        - targets: ['localhost:9000']
  global:
    scrape_interval: 60s
  wal_directory: /tmp/grafana-agent-wal

Dashboards

The MinIO integration installs the following dashboards in your Grafana Cloud instance to help monitor your system.

MinIO distributed cluster metrics

MinIO distributed metrics overview

Alerts

The MinIO integration includes the following useful alerts:

Alert	Description
MinioDisksOffline	Critical: MinIO disks offline.
MinioStorageUsed	Warning: MinIO disks high storage used percentage.

Metrics

The most important metrics provided by the MinIO integration, which are used on the pre-built dashboard and Prometheus alerts, are as follows:

bucket_objects_count
bucket_objects_histogram
bucket_usage_size
disk_storage_available
disk_storage_total
disk_storage_used
internode_rx_bytes_total
internode_tx_bytes_total
minio_disks_offline
minio_disks_total
minio_version_info
s3_errors_total
s3_requests_total
s3_ttfb_seconds_bucket
s3_ttfb_seconds_count
s3_ttfb_seconds_sum
up

Changelog

# 0.0.6 - September 2023

* New Filter Metrics option for configuring the Grafana Agent, which saves on metrics cost by dropping any metric not used by this integration. Beware that anything custom built using metrics that are not on the snippet will stop working.
* New hostname relabel option, which applies the instance name you write on the text box to the Grafana Agent configuration snippets, making it easier and less error prone to configure this mandatory label.

# 0.0.5 - May 2023

* Fix query in 'Storage Used' panel

# 0.0.4 - December 2022

* Update mixin to latest
  - Add instance selector
* Add screenshot

# 0.0.3 - September 2022

* Update dashboard panels descriptions.

# 0.0.2 - October 2021

* Update mixin to latest version:
  - Update queries to use $__rate_interval

# 0.0.1 - November 2020

* Initial release

Cost

By connecting your MinIO instance to Grafana Cloud, you might incur charges. To view information on the number of active series that your Grafana Cloud account uses for metrics included in each Cloud tier, see Active series and dpm usage and Cloud tier pricing.