static-exporter: Implement exporter using busybox #1521
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Add shell-based implementation for static-exporter using busybox as a lightweight alternative to the Apache web server implementation. The new implementation addresses dependency management concerns by providing a distroless container option that runs as non-root and includes built-in health checks. Changes - Added shell-based exporter option: New shell_exporter=true parameter enables busybox implementation - Automatic image selection: Uses gcr.io/distroless/static-debian12:debug for shell mode vs httpd:2.4-alpine for Apache - Embedded HTTP server: Pure bash implementation that serves /metrics and /health endpoints using netcat - Security improvements: Non-root execution (uid/gid 65532) with proper security context - Health checks: Added readiness probe for the shell implementation - Updated documentation: README now explains both implementations and their use cases
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Pull Request Overview
This PR adds an alternative shell-based implementation for the static-exporter using a distroless image and netcat-based HTTP server instead of Apache httpd. This provides a lighter, more secure option with fewer dependencies.
- Added
shell_exporterparameter to enable a busybox/shell-based HTTP server implementation - Implemented custom HTTP request handler in shell script to serve metrics and health check endpoints
- Updated deployment configuration to support both Apache and shell-based variants with appropriate security contexts and health checks
Reviewed Changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.
| File | Description |
|---|---|
| static-exporter/main.libsonnet | Added shell_exporter parameter and conditional logic to support both Apache httpd and shell-based implementations with appropriate configurations |
| static-exporter/README.md | Added documentation for the new shell-based implementation option and fixed trailing whitespace |
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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
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Add shell-based implementation for static-exporter using busybox as a lightweight alternative to the Apache web server implementation.
The new implementation addresses dependency management concerns by providing a distroless container option that runs as non-root and includes built-in health checks.
Changes
gcr.io/distroless/static-debian12:debugfor shell mode vshttpd:2.4-alpinefor Apache