Nginx To Higress Migration
higress-group/higress
Migrate from ingress-nginx to Higress in Kubernetes environments.
nginx C module debugging guidelines based on the official nginx development guide.
Install Nginx C Module Debug
$ npx skills add pproenca/dot-skills --skill nginx-c-module-debug -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install pproenca/dot-skills nginx-c-module-debug --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/pproenca/dot-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/.experimental/nginx-c-module-debug .claude/skills/nginx-c-module-debug && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "nginx-c-module-debug" agent skill from https://github.com/pproenca/dot-skills/tree/master/skills/.experimental/nginx-c-module-debug into .claude/skills/nginx-c-module-debug/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nginx-c-module-debug", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/pproenca/dot-skills/tree/master/skills/.experimental/nginx-c-module-debugType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add pproenca/dot-skills --skill nginx-c-module-debug -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install pproenca/dot-skills nginx-c-module-debug --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/pproenca/dot-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/.experimental/nginx-c-module-debug .agents/skills/nginx-c-module-debug && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "nginx-c-module-debug" agent skill from https://github.com/pproenca/dot-skills/tree/master/skills/.experimental/nginx-c-module-debug into .agents/skills/nginx-c-module-debug/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nginx-c-module-debug", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add pproenca/dot-skills --skill nginx-c-module-debug -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install pproenca/dot-skills nginx-c-module-debug --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/pproenca/dot-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/.experimental/nginx-c-module-debug .cursor/skills/nginx-c-module-debug && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "nginx-c-module-debug" agent skill from https://github.com/pproenca/dot-skills/tree/master/skills/.experimental/nginx-c-module-debug into .cursor/skills/nginx-c-module-debug/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nginx-c-module-debug", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/pproenca/dot-skills.git --path skills/.experimental/nginx-c-module-debug--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add pproenca/dot-skills --skill nginx-c-module-debug -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install pproenca/dot-skills nginx-c-module-debug --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/pproenca/dot-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/.experimental/nginx-c-module-debug .gemini/skills/nginx-c-module-debug && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "nginx-c-module-debug" agent skill from https://github.com/pproenca/dot-skills/tree/master/skills/.experimental/nginx-c-module-debug into .gemini/skills/nginx-c-module-debug/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nginx-c-module-debug", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install pproenca/dot-skills nginx-c-module-debugInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add pproenca/dot-skills --skill nginx-c-module-debug -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/pproenca/dot-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/.experimental/nginx-c-module-debug .github/skills/nginx-c-module-debug && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "nginx-c-module-debug" agent skill from https://github.com/pproenca/dot-skills/tree/master/skills/.experimental/nginx-c-module-debug into .github/skills/nginx-c-module-debug/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nginx-c-module-debug", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add pproenca/dot-skills --skill nginx-c-module-debug -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install pproenca/dot-skills nginx-c-module-debug --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/pproenca/dot-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/.experimental/nginx-c-module-debug .opencode/skills/nginx-c-module-debug && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "nginx-c-module-debug" agent skill from https://github.com/pproenca/dot-skills/tree/master/skills/.experimental/nginx-c-module-debug into .opencode/skills/nginx-c-module-debug/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "nginx-c-module-debug", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
nginx-c-module-debug- GitHub stars
- 214
- Token cost
- ~2.1k tokens
- SKILL.md length
- 659 words
- Files
- 49 (incl. references, assets)
- Skills in repo
- 182
- Repo updated
- First seen
- Licence
- MIT
At a glance
nginx C module debugging guidelines based on the official nginx development guide.
- Works in 8 steps: Crash Diagnosis & Signals (CRITICAL) → Memory Bug Detection (CRITICAL) → GDB & Core Dump Analysis (HIGH) → …
- Tasks involving segfault analysis
- SKILL.md covers When to Apply, Rule Categories by Priority, Quick Reference and How to Use, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Nginx C Module Debug is an agent skill from pproenca/dot-skills. nginx C module debugging guidelines based on the official nginx development guide. This skill should be used when debugging nginx C module crashes, memory bugs, request flow issues, or production problems. Triggers on tasks involving segfault analysis, coredump debugging, GDB inspection, memory leak detection, request phase tracing, AddressSanitizer setup, or nginx module troubleshooting.
Its SKILL.md is about 2.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 51 other files, including reference files and assets (for example `assets/templates/_template.md`, `metadata.json` and `references/_sections.md`).
It sits in DevOps & Cloud, covering Cloud networking and Debugging. It works with NGINX. The repository describes itself as: A collection of AI agent skills following the Agent Skills open format. The licence is MIT.
When your agent uses it
- Tasks involving segfault analysis
- Coredump debugging
- Memory leak detection
- Request phase tracing
Example prompts
- “/nginx-c-module-debug”
Workflow steps
8 steps, taken from the step headings in SKILL.md.
What it can do on your machine
Read from SKILL.md and the folder at commit cf93c57. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Nginx C Module Debug loads about 2.1k tokens when it runs, and up to ~45k if it reads all its reference files. Until then it costs about 103 tokens; SKILL.md has 659 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from pproenca/dot-skills at commit cf93c57, republished under its MIT licence (© pproenca). 659 words, ~2,145 tokens.
Download SKILL.mdSave it as
.claude/skills/nginx-c-module-debug/SKILL.md (or your agent's skills folder). This skill also uses 48 other files; get the full folder from GitHub.- name
- nginx-c-module-debug
- description
- nginx C module debugging guidelines based on the official nginx development guide. This skill should be used when debugging nginx C module crashes, memory bugs, request flow issues, or production problems. Triggers on tasks involving segfault analysis, coredump debugging, GDB inspection, memory leak detection, request phase tracing, AddressSanitizer setup, or nginx module troubleshooting.
nginx.org C Module Debugging Best Practices
Comprehensive debugging guide for nginx C modules, derived from the official nginx development documentation and production debugging experience. Contains 45 rules across 8 categories, prioritized by impact to guide systematic diagnosis of crashes, memory bugs, and behavioral issues in nginx modules.
Companion skills: This skill complements nginx-c-modules (correctness) and nginx-c-module-perf-reliability (performance). This skill covers debugging and diagnosis.
When to Apply
Reference these guidelines when:
- Diagnosing nginx worker crashes (segfaults, SIGABRT, SIGSEGV)
- Finding memory bugs (use-after-free, leaks, pool corruption, buffer overruns)
- Setting up GDB and core dump analysis for nginx
- Tracing request flow through phases, subrequests, and filter chains
- Instrumenting nginx modules with debug logging and dynamic tracing tools
Rule Categories by Priority
| Priority | Category | Impact | Prefix |
|---|---|---|---|
| 1 | Crash Diagnosis & Signals | CRITICAL | crash- |
| 2 | Memory Bug Detection | CRITICAL | memdbg- |
| 3 | GDB & Core Dump Analysis | HIGH | gdb- |
| 4 | Request Flow Tracing | HIGH | trace- |
| 5 | Debug Logging Patterns | MEDIUM-HIGH | dbglog- |
| 6 | State & Lifecycle Debugging | MEDIUM | state- |
| 7 | Dynamic Tracing Tools | MEDIUM | probe- |
| 8 | Build & Sanitizer Configuration | LOW-MEDIUM | build- |
Quick Reference
1. Crash Diagnosis & Signals (CRITICAL)
crash-segfault-signature- Identify Segfault Crash Signature from Signal and Addresscrash-null-deref-pattern- Recognize NULL Pointer Dereference Patterns in nginx Modulescrash-double-free-finalize- Diagnose Double Finalize Crashes from Request Reference Countcrash-stack-overflow- Detect Stack Overflow from Recursive Subrequest or Filter Chainscrash-worker-exit-log- Extract Crash Context from Worker Exit Log Messagescrash-error-page-redirect- Avoid Crashes from error_page Internal Redirect Context Invalidation
2. Memory Bug Detection (CRITICAL)
memdbg-use-after-free- Detect Use-After-Free from Pool Destruction Timingmemdbg-pool-leak-pattern- Identify Pool Memory Leak Patterns from Growing Worker RSSmemdbg-slab-corruption- Diagnose Shared Memory Slab Corruption from Multi-Worker Crashesmemdbg-cleanup-handler-leak- Detect Resource Leaks from Missing Pool Cleanup Handlersmemdbg-buffer-overrun- Find Buffer Overrun from ngx_pnalloc Size Miscalculationmemdbg-temp-pool-misuse- Avoid Storing Long-Lived Pointers in Temporary Poolsmemdbg-valgrind-pool-trace- Use Valgrind Pool-Level Tracing to Find Leaked Allocations
3. GDB & Core Dump Analysis (HIGH)
gdb-coredump-setup- Configure Core Dump Generation for nginx Worker Crashesgdb-attach-worker- Attach GDB to a Running nginx Worker Processgdb-backtrace-read- Read nginx Backtrace to Identify Crash Module and Phasegdb-inspect-request- Inspect ngx_http_request_t Fields in GDB for Request Stategdb-memory-buffer-extract- Extract Debug Log from Memory Buffer Using GDB Scriptgdb-watchpoint-corruption- Use GDB Watchpoints to Catch Memory Corruption at Write Time
4. Request Flow Tracing (HIGH)
trace-phase-handler-flow- Trace Request Through HTTP Phase Handlerstrace-subrequest-tree- Map Subrequest Parent-Child Relationships for Debuggingtrace-filter-chain-order- Trace Filter Chain Execution Order and Data Flowtrace-upstream-callback-seq- Trace Upstream Callback Sequence for Proxy Debuggingtrace-event-handler-chain- Trace Event Handler Execution for Connection Debuggingtrace-config-inheritance- Trace Configuration Inheritance Through Server and Location Blocks
Show full SKILL.md (244 more words)Show less
5. Debug Logging Patterns (MEDIUM-HIGH)
dbglog-debug-mask- Use Correct Debug Mask for Targeted Log Filteringdbglog-debug-connection- Use debug_connection to Isolate Single-Client Debug Outputdbglog-memory-buffer- Use Memory Buffer Logging to Capture Debug Output Without Disk I/Odbglog-log-action-string- Set Log Action String for Context in Error Messagesdbglog-format-ngx-str- Format ngx_str_t Correctly in Debug Log Messages
6. State & Lifecycle Debugging (MEDIUM)
state-connection-lifecycle- Track Connection State Transitions for Lifecycle Debuggingstate-upstream-state-machine- Debug Upstream Module State by Logging Transition Pointsstate-timer-leak- Detect Timer Leaks from Events Not Removed Before Pool Destructionstate-event-flag-debug- Inspect Event Flags to Debug Unexpected Handler Invocationstate-request-count-track- Track Request Reference Count to Debug Premature Destruction
7. Dynamic Tracing Tools (MEDIUM)
probe-strace-syscall- Use strace to Trace System Call Patterns in nginx Workersprobe-dtrace-request- Trace Request Processing with DTrace pid Providerprobe-systemtap-pool- Trace Memory Pool Allocations with SystemTapprobe-ebpf-latency- Measure Per-Function Latency with eBPF Probesprobe-strace-fd-leak- Detect File Descriptor Leaks with strace and /proc
8. Build & Sanitizer Configuration (LOW-MEDIUM)
build-debug-flags- Compile nginx with Full Debug Symbols and No Optimizationbuild-asan-configure- Build nginx with AddressSanitizer for Memory Error Detectionbuild-single-process- Use Single-Process Mode for Simplified Debuggingbuild-valgrind-suppressions- Use nginx Valgrind Suppressions to Reduce False Positivesbuild-debug-palloc- Enable NGX_DEBUG_PALLOC for Fine-Grained Pool Allocation Tracking
How to Use
Read individual reference files for detailed explanations and code examples:
- Section definitions - Category structure and impact levels
- Rule template - Template for adding new rules
Reference Files
| File | Description |
|---|---|
| references/_sections.md | Category definitions and ordering |
| assets/templates/_template.md | Template for new rules |
| metadata.json | Version and reference information |
© pproenca, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 48 other files (references, assets) in skills/.experimental/nginx-c-module-debug of pproenca/dot-skills.
- SKILL.md
- assets/templates/_template.md
- metadata.json
- references/_sections.md
- references/build-asan-configure.md
- references/build-debug-flags.md
- references/build-debug-palloc.md
- references/build-single-process.md
- references/build-valgrind-suppressions.md
- references/crash-double-free-finalize.md
- references/crash-error-page-redirect.md
- references/crash-null-deref-pattern.md
- references/crash-segfault-signature.md
- references/crash-stack-overflow.md
- references/crash-worker-exit-log.md
- references/dbglog-debug-connection.md
- references/dbglog-debug-mask.md
- references/dbglog-format-ngx-str.md
- … and 31 more
Open the folder on GitHubat commit cf93c57
Compare with similar skills
Nginx C Module Debug next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Nginx C Module Debug this skillpproenca/dot-skills | 214 | — | ~2.1k | Automated safety check: Pass | MIT | |
| Nginx To Higress Migrationhigress-group/higress | 9.5k | — | ~3.9k | Automated safety check: Pass | Apache-2.0 | |
| NGINX Ingress Controller Feature Checklistsnginx/kubernetes-ingress | 5.1k | — | ~1.4k | Automated safety check: Pass | Apache-2.0 | |
| NGINX Ingress Policy CRD Guidenginx/kubernetes-ingress | 5.1k | — | ~2k | Automated safety check: Pass | Apache-2.0 | |
| KubeSphere Gateway Managementkubesphere/kubesphere | 17k | — | ~2.9k | Automated safety check: Pass | Custom licence | |
| Wp Static Clonejdevalk/skills | 104 | — | ~2.6k | Automated safety check: Pass | MIT |
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Related
Works with
Categories
Questions about Nginx C Module Debug
What does Nginx C Module Debug do?
nginx C module debugging guidelines based on the official nginx development guide. Nginx C Module Debug is an agent skill from pproenca/dot-skills. nginx C module debugging guidelines based on the official nginx development guide.
When should I use Nginx C Module Debug?
Nginx C Module Debug fits situations like: tasks involving segfault analysis; coredump debugging; memory leak detection; request phase tracing.
How do I install Nginx C Module Debug in Claude Code?
Run `npx skills add pproenca/dot-skills --skill nginx-c-module-debug -a claude-code`. Or copy the skill folder (skills/.experimental/nginx-c-module-debug in pproenca/dot-skills) into .claude/skills/nginx-c-module-debug in your project. Claude Code loads it when a task matches its description.
How do I install Nginx C Module Debug in Codex?
Run `npx skills add pproenca/dot-skills --skill nginx-c-module-debug -a codex`. Or copy the skill folder (skills/.experimental/nginx-c-module-debug in pproenca/dot-skills) into .agents/skills/nginx-c-module-debug in your project. Codex loads it when a task matches its description.
Can I use Nginx C Module Debug in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add pproenca/dot-skills --skill nginx-c-module-debug -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/nginx-c-module-debug, .gemini/skills/nginx-c-module-debug, .github/skills/nginx-c-module-debug and .opencode/skills/nginx-c-module-debug in your project.
What does Nginx C Module Debug need to run?
SKILL.md names no scripts, command-line tools or credentials: Nginx C Module Debug is instructions for the agent only.
Does Nginx C Module Debug access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Nginx C Module Debug safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Nginx C Module Debug use?
Nginx C Module Debug is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Nginx C Module Debug use?
About 2.1k tokens (SKILL.md is roughly 8.6k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 43k tokens, read only when the agent opens those files.
What are the alternatives to Nginx C Module Debug?
Skills that share tags, products or a category with Nginx C Module Debug: Nginx To Higress Migration (higress-group/higress, 9.5k stars), NGINX Ingress Controller Feature Checklists (nginx/kubernetes-ingress, 5.1k stars), NGINX Ingress Policy CRD Guide (nginx/kubernetes-ingress, 5.1k stars) and KubeSphere Gateway Management (kubesphere/kubesphere, 17k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Nginx C Module Debug?
pproenca (a GitHub user) maintains it in pproenca/dot-skills, which has 214 GitHub stars. The repository holds 182 skills in this directory. The repository was last updated on August 15, 2026.
Source: pproenca/dot-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.