Prometheus
Chkk coverage for Prometheus. We provide curated release notes, preflight/postflight checks, and Upgrade Templates—all tailored to your environment.
Coverage Matrix
| Chkk Curated Release Notes | v2.19.1 to latest |
| Private Registries | Covered |
| Custom Built Images | Covered |
| Preflight/Postflight Checks (Safety, Health, and Readiness) | v2.25.0 to latest |
| Supported Packages | Helm, Kustomize, Kube |
| End-Of-Life(EOL) Information | Covered |
| Version Incompatibility Information | Covered |
| Upgrade Templates | In-Place, Blue-Green |
| Preverification | Covered |
Prometheus Overview
Prometheus is a CNCF-graduated, open-source monitoring system that scrapes metrics from targets via HTTP endpoints. It stores time-series data locally and supports fast, flexible queries through PromQL. With Kubernetes service discovery, Prometheus detects relevant components and application pods automatically. Alertmanager integration adds powerful alerting capabilities, triggering escalations based on custom rules. This seamless observability stack equips platform teams with deep insights into system performance and reliability.
Chkk Coverage
Curated Release Notes
Chkk filters Prometheus release notes to highlight critical changes—like deprecated flags, shifting defaults, or newly required configs. By focusing on operationally relevant updates, it lets you quickly see which releases might affect your custom alerts or exporter configurations. Chkk also flags important EOL notices, ensuring you don’t unknowingly rely on an unsupported version.
Preflight & Postflight Checks
Before upgrading Prometheus, Chkk’s preflight checks confirm your existing setup won’t break due to incompatible flags or insufficient resource allocations. It inspects Kubernetes manifests (Helm, Kustomize, or raw YAML) for any known pitfalls and references Prometheus’ official support details. Postflight checks then verify that upgraded instances are scraping all targets, that recorded rules remain valid, and that no silent failures have occurred in logs or Alertmanager alerts.
Version Recommendations
Chkk tracks Prometheus’ release notes and recommends safe upgrade targets based on LTS availability, community feedback, and alignment with your cluster’s Kubernetes version. It identifies upcoming EOL milestones to help you plan timely upgrades, avoiding last-minute scrambles for security patches. If you’re multiple versions behind, Chkk surfaces a path that balances new features with proven stability.
Upgrade Templates
Chkk’s Upgrade Templates detail two primary approaches for Prometheus upgrades—in-place and blue-green. In an in-place scenario, Chkk outlines rolling updates across HA pairs to preserve continuous scraping. For a blue-green strategy, it offers guidance on spinning up a parallel deployment, comparing scraped data between old and new versions, and gradually cutting over to the updated instance.
Preverification
Through preverification, Chkk simulates your Prometheus upgrade in a controlled environment using copies of existing configs and metrics data. This process uncovers issues like deprecated syntax, unexpected performance overhead, or storage format mismatches before impacting production. It’s a practical safeguard that reduces the risk of losing visibility or encountering runtime errors during real upgrades.
Supported Packages
Chkk works with various packaging methods, including Helm charts (such as the Prometheus Operator), Kustomize overlays, and standard Kubernetes manifests. It respects custom images, private registries, or custom build requirements, so you can maintain consistency with your existing CI/CD pipelines. This unified approach ensures you don’t need to change tooling to leverage Chkk’s upgrade intelligence.
Common Operational Considerations
- Avoiding Monitoring Gaps: For minimal downtime, upgrade Prometheus in an HA pair or use a staggered approach in single-instance deployments. Ensure time-series data and configuration backups are taken to prevent loss during rollouts.
- Maintaining Exporter Compatibility: Verify that all exporters produce valid metrics adhering to updated content-type requirements. Automate checks to flag exporters likely to fail under stricter parsing or deprecated protocols.
- Cleaning Deprecated Flags: Removed command-line flags or configuration fields can break Prometheus startup after an upgrade. Review release notes thoroughly and replace obsolete flags with supported syntax to avoid unexpected crashes.
- Kubernetes Integration Updates: If Prometheus relies on older Kubernetes discovery APIs, a new release may drop that support. Follow official migration guides and switch to supported API versions to maintain stable service discovery.