Open-Source DevOps · cloudprober

cloudprober

Cloudprober is an open-source active monitoring tool that sends synthetic probes (HTTP, DNS, TCP, gRPC, etc.) to detect service failures before users experience them. Written in Go, it runs as a lightweight single binary and integrates with Prometheus, Grafana, and cloud monitoring platforms.

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Source: GitHub — github.com/cloudprober/cloudprober

690

GitHub stars

121

Forks

Primary language

Apache-2.0

License (OSI-approved)

Key facts

Objective fields from the source. Values we can't verify are shown as “Unknown” rather than guessed.

Field	Value
Repository	cloudprober/cloudprober
Owner	cloudprober
Primary language	Go
License	Apache-2.0 — OSI-approved
Stars	690
Forks	121
Open issues	47
Latest release	v0.14.3 (2026-04-23)
Last updated	2026-07-08
Source	https://github.com/cloudprober/cloudprober

What cloudprober is

Go-based blackbox monitoring system supporting HTTP, PING, TCP, DNS, gRPC, UDP, and custom Starlark probes with auto-discovery for Kubernetes and GCP resources. Exports metrics to Prometheus, Grafana, DataDog, AWS CloudWatch, and Google Cloud Monitoring; configurable histograms and labels for latency analysis.

Quickstart

Get the cloudprober source

Clone the repository and explore it locally.

terminalbash

1git clone https://github.com/cloudprober/cloudprober.git2cd cloudprober3# follow the project's README for install & configuration

Need it deployed, integrated, or customized instead? DEV.co ships production installs.

Best use cases

Synthetic End-to-End Monitoring

Proactively detect service degradation and outages before customers report them. Ideal for SRE teams managing mission-critical APIs, microservices, and cloud infrastructure.

Kubernetes & Multi-Cloud Environments

Auto-discover and monitor Kubernetes services, GCP resources, or file-based targets without manual probe reconfiguration. Scales efficiently in containerized deployments.

Cross-Region & On-Prem Connectivity Monitoring

Validate latency and availability of cloud-to-on-premises connections, DNS resolution, and gRPC endpoints across geographic boundaries for hybrid architectures.

Implementation considerations

Configure probe targets via YAML (Kubernetes auto-discovery, GCP, or file-based) and plan scrape intervals to balance monitoring frequency against resource overhead.
Integrate probe results with your existing Prometheus/Grafana stack or export to DataDog/CloudWatch; requires networking access from prober to monitored targets.
Set up alerting rules in Prometheus or downstream systems; Cloudprober itself supports alerts via email, Slack, PagerDuty, and HTTP webhooks.
Resource-efficient but scalability depends on probe count and frequency; design multi-instance deployments for large target sets using Kubernetes or cloud native platforms.
Test probes in a staging environment first; misconfigured probes can generate false positives or excessive network traffic.

When to avoid it — and what to weigh

Reactive Alerting Only — If you rely solely on application logs or reactive metrics, Cloudprober's active probing overhead may not justify the investment; consider reactive tools first.
Complex Custom Probe Logic Required — While Starlark scripting is supported, if you need highly bespoke probe behavior, building or forking may be necessary; pre-built probe types are limited to common protocols.
Closed-Source / Proprietary Requirement — Cloudprober is Apache-2.0 licensed open-source; if internal IP protection or a fully managed closed-source solution is mandatory, evaluate commercial alternatives.
Enterprise SLA Expectations — This is community-maintained open-source. If you require guaranteed SLAs, 24/7 vendor support, or liability guarantees, a commercial monitoring service is more appropriate.

License & commercial use

Apache License 2.0 (Apache-2.0). Permissive open-source license permitting commercial use, modification, and distribution under standard attribution and liability disclaimers.

Apache-2.0 is a permissive OSI license that explicitly allows commercial use, modification, and redistribution. No license fee or vendor permission required. However, this is community-maintained open-source with no commercial support contract; any modifications or deployment remain your responsibility. Requires review if you need indemnification or vendor SLAs.

DEV.co evaluation signals

Editorial assessment — not user reviews. Directional, with an explicit confidence level.

Signal	Assessment
Maintenance	Active
Documentation	Adequate
License clarity	Clear
Deployment complexity	Low
DEV.co fit	Strong
Assessment confidence	High

Security considerations

Probes execute from Cloudprober's network context; ensure proper RBAC and network policies if auto-discovering Kubernetes resources. Starlark scripting support allows custom logic but requires code review for injection risks. No zero-trust or encryption-at-rest guarantees stated. Treat Cloudprober configuration (credentials, target lists) as sensitive. README cites SonarCloud security rating; review the actual SonarCloud project for current vulnerability state.

Alternatives to consider

Prometheus Blackbox Exporter

Established CNCF ecosystem tool for blackbox monitoring; lighter weight but less feature-rich than Cloudprober (no auto-discovery, limited probe types, no custom scripting). Compare: https://medium.com/cloudprober/prometheus-blackbox-exporter-vs-cloudprober-08a1d3beeda2.

DataDog Synthetic Monitoring

Fully managed SaaS with enterprise SLAs, built-in alerting, and team collaboration. No open-source, higher cost, but no deployment or maintenance burden.

New Relic Synthetics

Commercial managed service with advanced scripting, cross-region execution, and browser monitoring. Better for teams requiring vendor support and integrated observability platform.

Software development agency

Build on cloudprober with DEV.co software developers

Evaluate Cloudprober for your environment: review the Getting Started guide, test probe configurations in staging, and validate integration with your existing monitoring platform. Contact your DevOps team or Devco to architect a deployment plan.

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cloudprober FAQ

How is Cloudprober different from Prometheus Blackbox Exporter?

Cloudprober adds auto-discovery (Kubernetes, GCP), custom Starlark scripting, multi-target templates, and more built-in probe types. Blackbox is lighter and simpler. See Cloudprober's comparison blog for details.

Does Cloudprober require Prometheus?

No, but it is designed to integrate with Prometheus as the scrape target. You can also export metrics to DataDog, AWS CloudWatch, Google Cloud Monitoring, or PostgreSQL directly.

Can I use Cloudprober in Kubernetes without auto-discovery?

Yes, use file-based or static YAML target definitions. Auto-discovery is optional; configure targets manually if preferred.

Is there commercial support?

Cloudprober is community-maintained open-source with no official vendor support. Enterprise users typically fork or hire consulting. Check GitHub for community contacts.

Custom software development services

Adopting cloudprober is usually one piece of a larger software development effort. As a software development agency, DEV.co provides software development services and web development expertise — pairing senior software developers and web developers with your team to design, build, and operate open-source devops software in production.

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