extended-ceph-exporter

extended-ceph-exporter

A Prometheus exporter to provide "extended" metrics about a Ceph cluster's running components (e.g., RGW).

Requirements

• Needs a Ceph cluster up and running.

• Needs an admin user

  radosgw-admin user create --uid extended-ceph-exporter --display-name "extended-ceph-exporter admin user" --caps "buckets=read;users=read;usage=read;metadata=read;zone=read"
  # Access key / "Username"
  radosgw-admin user info --uid extended-ceph-exporter | jq '.keys[0].access_key'
  # Secret key / "Password
  radosgw-admin user info --uid extended-ceph-exporter | jq '.keys[0].secret_key'
  

Quickstart

• Clone the repository:

  git clone https://github.com/koor-tech/extended-ceph-exporter
  cd extended-ceph-exporter
  

• Create a copy of the .env.example file and name it .env. Configure your RGW credentials and endpoint in the .env file.

• Configure Prometheus to collect metrics from the exporter from :9138/metrics endpoint using a static configuration, here's a sample scrape job from the prometheus.yml:

  # For more information on Prometheus scrape_configs:
  # https://prometheus.io/docs/prometheus/latest/configuration/configuration/#scrape_config
  scrape_configs:
  
    - job_name: "extended-ceph-metrics"
  
      # Override the global default and scrape targets from this job every 30 seconds.
      scrape_interval: 30s
  
      static_configs:
        # Please change the ip address `127.0.0.1` to target the exporter is running
        - targets: ['127.0.0.1:9138']
  

• To run the exporter locally, run go run .

• Should you have Grafana running for metrics visulization, check out the Grafana dashboards.

Helm

To install the exporter to Kubernetes using Helm, check out the extended-ceph-exporter Helm Chart.

Collectors

There is varying support for collectors. The tables below list all existing collectors and the required Ceph components.

Enabled by default

Development

Requirements

• Golang 1.21.x
• Depending on the module requirements, a Ceph cluster with the respective Ceph components.

Making Changes to the Helm Chart

When changing anything in the Helm Chart, the version in the Chart.yaml needs to be increased according to Semver. Additionally make helm-doc must be run afterwards and the changes to the Helm Chart's README.md must be commited as well.

Debugging

A VSCode debug config is available to run and debug the project.

To make the exporter talk with a Ceph RGW S3 endpoint, create a copy of the .env.example file and name it .env. Be sure ot add your Ceph RGW S3 endpoint and credentials in it.