cloudprober

Infra

Updated on August 3

Cloudprober Overview

Secure your stack with a hardened Cloudprober image freshly-built by Minimus. Minimus images always include the most up-to-date package version for all packages and dependencies contained in the image.

Cloudprober is an active monitoring tool that runs continuous synthetic probes using HTTP, PING, TCP, DNS, gRPC, and UDP to detect failures. It auto-discovers targets in Kubernetes and GCP, and exports the resulting metrics to Prometheus, Grafana, Datadog, AWS CloudWatch, and other monitoring backends.

Try It Out

For a quick test, print the version information:

docker run --rm reg.mini.dev/cloudprober --version

Run an HTTP Probe

Create a probe config file to check the Minimus site:

cat <<EOF > cloudprober.cfg
probe {
  name: "minimus_image_gallery"
  type: HTTP
  targets {
    host_names: "images.minimus.io"
  }
  http_probe {
    protocol: HTTPS
  }
  interval: "5s"
  timeout: "1s"
}
EOF

Start Cloudprober with the config mounted, exposing the metrics port:

docker run -d --rm \
  -p 9313:9313 \
  -v $PWD/cloudprober.cfg:/etc/cloudprober.cfg \
  reg.mini.dev/cloudprober

Query the Prometheus-format metrics for the probe:

curl "http://localhost:9313/metrics" | grep minimus_image_gallery

The response includes the probe's success and failure counters. Matching total and success counts, with failure at 0, confirm the probe is succeeding:

total{ptype="http",probe="minimus_image_gallery",dst="images.minimus.io"} 2
success{ptype="http",probe="minimus_image_gallery",dst="images.minimus.io"} 2
resp_code{ptype="http",probe="minimus_image_gallery",dst="images.minimus.io",code="200"} 2
failure{ptype="http",probe="minimus_image_gallery",dst="images.minimus.io"} 0

Technical Considerations

The Cloudprober image provided by Minimus is a slim, security-hardened alternative to the public image from Docker Hub. The images are largely interchangeable, with a few differences as noted below.

Cloudprober built by Minimus:

Runs as root to support required functions in alignment with the public image.
Drill down on the version specification tab to see the default user, listening ports, entrypoint, volumes, environment variables, etc.

The Payoff

A hardened, minimal image that will remain more secure for the long run and accrue vulnerabilities at a slower rate.

See the risk reduction dashboard for a detailed CVE comparison over the past 30 days.
Review the compliance report to see the default hardening and security configurations for the image.

Terms & Info

Trademark

This catalog is published by Minimus. All product names, logos, and marks, other than those belonging to Minimus, shown are owned by their respective rights holders and appear here only to identify the open source software each image contains. Minimus claims no ownership of those marks and implies no affiliation with, endorsement by, certification by, or sponsorship by any rights holder.

Disclaimer

Images are provided "as-is" without warranty of any kind. "Hardened" refers to the security configuration applied at the time of build and does not constitute a guarantee of ongoing security or absence of vulnerabilities. The free tier is provided without support, SLA, or guaranteed patching timelines. Security updates may be applied to paid subscriptions before or instead of free tier images. By pulling or using any image you agree to our Terms of Use.