TN-015 — Implement JMX Exporter Baseline Configuration and Validation¶
| Field | Value |
|---|---|
| Status | Completed |
| Activity Type | Implementation |
| Record Type | Live |
| Project | Tomcat Monitoring |
| Phase | Monitoring Integration and Runtime Deployment |
| Activity Date | 2026-08-25 |
| Recorded Date | 2026-08-25 |
| Owner | Project owner |
| Working Mode | Write |
| Authorization Status | Approved |
| Approved By | Project owner |
| Approval Date | 2026-08-25 |
🎯 Objective¶
Menyediakan baseline JMX Exporter configuration dan static validator yang dapat digunakan sebagai source input isolated Prometheus scrape verification.
🌍 Background¶
TN-014 menerima contract dua baseline rules untuk membuktikan integration path tanpa menganggapnya sebagai final operational metric coverage. Decision Gate juga menetapkan source validation tanpa dependency baru, lab TLS dan runtime verification pada TN terpisah, serta larangan mengubah persistent Prometheus state.
Project owner menyetujui TN-015 sebagai source-only implementation. Build, certificate, container, volume, runtime test, dan commit tetap berada di luar authorization aktivitas ini.
📚 Scope¶
- Tambahkan
config/jmx-exporter/jmx-exporter.ymldengan server-side TLS structure dan dua baseline rules yang diterima. - Tambahkan
scripts/validate-jmx-exporter.shtanpa dependency baru. - Wiring file dan component validator ke
scripts/validate.sh. - Perbarui component, repository, dan validation documentation contract.
- Jalankan shell syntax, component validator, baseline validator, whitespace, dan documentation checks.
Full operational metric catalog, semantic validation melalui runtime JMX Exporter, certificate generation, container, volume, network mutation, Prometheus scrape dan commit tidak termasuk scope.
📋 Prerequisites¶
| Prerequisite | Expected state | Initial result |
|---|---|---|
| Decision baseline | TN-014 Recommendation A sampai E diterima. | Passed. |
| Source repository | tomcat-monitoring working tree bersih. |
Passed. |
| Documentation repository | Hanya TN-014 dan navigation changes tersedia. | Passed; changes dipertahankan. |
| Secret boundary | Tidak ada certificate, key, keystore, password, atau environment file dalam scope. | Passed by scope. |
⚖️ Execution Decision¶
Implementasi menerapkan Recommendation A TN-014: dua baseline rules
jvm_memory_heap_used_bytes dan tomcat_server_info, PKCS12 runtime path,
password environment reference, certificate alias tomcat-jmx-exporter, serta
exact structural validator. Baseline ini hanya untuk integration proof dan
tidak menggantikan metric catalog operasional.
🗺️ Implementation Plan¶
| Tahap | Rencana |
|---|---|
| Prepare the JMX Exporter Configuration | Membuat konfigurasi milik project dari contoh derived image yang telah diverifikasi. |
| Implement the Static Validator | Memeriksa TLS fields, rules, jumlah rule, dan larangan inline password. |
| Integrate the Baseline Validation | Menambahkan konfigurasi serta validator ke interface validation utama. |
| Update the Component Documentation | Menjelaskan contract dan batas runtime pada README terkait. |
| Validate the Source and Documentation | Menjalankan pemeriksaan tanpa memasang dependency atau menjalankan runtime. |
⚙️ Implementation¶
Prepare the JMX Exporter Configuration¶
Tambahkan config/jmx-exporter/jmx-exporter.yml dengan reference PKCS12,
password dari environment, certificate alias, serta dua baseline rule.
Expected Result
Konfigurasi project tersedia tanpa menyimpan password literal.
Actual Result: configuration tersedia dengan TLS reference dan dua rule.
Evidence: targeted source review pada jmx-exporter.yml.
Implement the Static Validator¶
Tambahkan validator dan terapkan permission executable.
Expected Result
Validator dapat dijalankan serta menerima TLS dan two-rule contract.
Actual Result: percobaan chmod pertama terhalang sandbox read-only;
command yang sama berhasil setelah write permission terbatas diberikan.
Evidence: shell syntax dan component validator kemudian lulus.
Integrate the Baseline Validation¶
Hubungkan file dan validator baru ke required-file inventory serta validator utama.
Expected Result
Baseline validation menjalankan JMX Exporter bersama contract component lain dan validator berstatus executable.
Actual Result: seluruh component dan baseline checks lulus.
Evidence: output validator dan executable check.
Update the Component Documentation¶
Perbarui README repository, component, dan validation agar pembaca dapat membedakan hasil source dari TLS handshake serta scrape yang belum diuji.
Expected Result
Dokumentasi menjelaskan artifact, cara validation, dan batas klaim runtime.
Actual Result: README terkait dan current-state documentation diperbarui.
Evidence: targeted diff pada file dokumentasi yang dicatat di Commands Executed.
Validate the Source and Documentation¶
Expected Result
Source, component contract, baseline repository, dan dokumentasi lulus pemeriksaan tanpa runtime mutation.
Actual Result: seluruh pemeriksaan yang tersedia lulus; MkDocs tidak tersedia sehingga render tidak dijalankan.
Evidence: validator, diff check, dan trailing-whitespace scans lulus;
semantic parse, TLS handshake, serta scrape tetap Not verified.
⚙️ Commands Executed¶
Readiness discovery¶
git status --short --branch
sed -n '1,180p' README.md
sed -n '1,180p' config/jmx-exporter/README.md
sed -n '1,180p' validation/README.md
sed -n '1,180p' scripts/validate.sh
Source repository bersih. Handbook memiliki uncommitted TN-014 dan navigation changes yang berasal dari accepted decision gate; tidak ada perubahan pengguna lain yang beririsan.
Source implementation and validation¶
chmod +x scripts/validate-jmx-exporter.sh
bash -n scripts/*.sh
./scripts/validate-jmx-exporter.sh
./scripts/validate.sh
git diff --check
git diff --stat
git diff --summary
git diff -- README.md config/jmx-exporter/README.md scripts/validate.sh validation/README.md
sed -n '1,220p' config/jmx-exporter/jmx-exporter.yml
sed -n '1,260p' scripts/validate-jmx-exporter.sh
test -x scripts/validate-jmx-exporter.sh
git status --short --branch
Percobaan pertama chmod gagal karena filesystem sandbox read-only. Command
yang sama berhasil setelah write permission terbatas diberikan. Shell syntax,
component validator, baseline validator, dan source whitespace check lulus.
Source review mengonfirmasi configuration hanya memiliki dua baseline rules dan
validator berstatus executable.
Final source and documentation verification¶
bash -n scripts/*.sh
./scripts/validate-jmx-exporter.sh
./scripts/validate.sh
git diff --check
rg -n '[[:blank:]]+$' README.md config/jmx-exporter/README.md config/jmx-exporter/jmx-exporter.yml scripts/validate-jmx-exporter.sh scripts/validate.sh validation/README.md
git diff --check
rg -n '[[:blank:]]+$' docs/projects/tomcat-monitoring/index.md docs/projects/tomcat-monitoring/development/index.md docs/projects/tomcat-monitoring/operations/index.md docs/projects/tomcat-monitoring/engineering-journal/monitoring-integration-and-runtime-deployment/.pages docs/projects/tomcat-monitoring/engineering-journal/monitoring-integration-and-runtime-deployment/index.md docs/projects/tomcat-monitoring/engineering-journal/monitoring-integration-and-runtime-deployment/TN-014-define-jmx-exporter-configuration-and-lab-tls-integration-contract.md docs/projects/tomcat-monitoring/engineering-journal/monitoring-integration-and-runtime-deployment/TN-015-implement-jmx-exporter-baseline-configuration-and-validation.md
command -v mkdocs
git status --short --branch
Source dan Handbook diff checks lulus. Kedua trailing-whitespace scans tidak
menemukan match. Component serta repository baseline validators lulus kembali
setelah documentation consolidation. mkdocs tidak tersedia sehingga render
site tidak dijalankan dan dependency tidak dipasang.
✅ Verification¶
| Method | Expected result | Actual result | Evidence |
|---|---|---|---|
| Shell syntax | Seluruh scripts valid. | Passed. | bash -n scripts/*.sh. |
| Component validation | TLS dan two-rule baseline contract diterima. | Passed. | Validator melaporkan TLS dan two-rule baseline valid. |
| Baseline validation | Repository layout serta seluruh component contracts diterima. | Passed. | JMX Exporter, Prometheus, Telegraf, dan baseline checks lulus. |
| Secret boundary | Tidak ada sensitive filename atau inline password. | Passed. | Baseline validator dan source review. |
| Documentation | Diff, navigation, links, dan whitespace valid. | Passed kecuali MkDocs render tidak tersedia. | Diff dan trailing-whitespace checks; TN-014 serta TN-015 terdaftar berurutan. |
Semantic configuration parsing, TLS handshake, hostname verification, dan
Prometheus scrape berstatus Not verified karena merupakan objective TN-016,
bukan mandatory verification TN-015.
🔄 Source-Control Handoff¶
JMX Exporter baseline configuration dan validator disimpan pada commit
repository tomcat-monitoring e33cbac. Decision evidence, implementation
record, navigation, dan current-state documentation disimpan pada commit
Handbook f0bf713.
🧾 Outcome¶
Approved source-only implementation selesai. Repository tomcat-monitoring
kini memiliki two-rule JMX Exporter baseline, static component validator, dan
baseline validation wiring. Repository serta current-state documentation
membedakan integration proof dari full operational metric coverage.
Tidak ada dependency, image, certificate, container, volume, network, atau
runtime state yang diubah. Source dan documentation changes kemudian disimpan
sesuai Source-Control Handoff.
⏭️ Next Steps¶
TN-016 memerlukan authorization terpisah untuk certificate generation, temporary container dan volumes, success/failure scrape verification, serta exact cleanup.