portfolio/CHANGELOG.md

Changelog

[Unreleased]

Added

• Cross-repository operational documentation structure:
  • infra-run/docs/operations-cheatsheet.md
  • platform-projects/docs/platform-cheatsheet.md
  • labs/docs/lab-cheatsheet.md
• Production-oriented Linux/Unix operations reference with incident workflows, storage and networking checks, SSL/TLS notes, AIX commands, automation safety patterns, Ansible operational usage, and observability quick-reference.
• SELinux operational coverage for mode checks, context inspection, AVC audit review, persistent relabel workflow, booleans, and SELinux-specific incident response.
• Selected baseline Ansible hardening automation:
  • RHEL 9 role and playbook.
  • Debian 13 / Ubuntu 26.04 role and playbook.
  • IBM AIX 7 role and playbook.
• Shared sanitized Ansible inventory defaults for Linux and AIX examples.
• Role-level task structure covering pre-checks, SSH, sudo, auditing, logging, services, filesystem controls, platform-specific settings, handlers, and post-check validation.

Changed

• Updated repository and infra-run README files to surface the new documentation structure and operational cheatsheets.
• Updated repository, infra-run, and Ansible README files to describe the new hardening automation instead of placeholder-only Ansible structure.

Notes

• Hardening content covers selected baseline controls and intended for portfolio/lab use; live use requires environment-specific review and validation.

[Initial Version]

Added

• Repository structure:
  • infra-run
  • platform-projects
  • labs
• Linux operations Bash toolkit under infra-run/scripts/bash/os-healthcheck/:
  • healthcheck
  • disk usage checks
  • service checks
  • system reporting
• Disk full incident toolkit:
  • disk analysis
  • large files detection
  • deleted open files detection
  • safe cleanup suggestions
• Network troubleshooting script under infra-run/scripts/bash/os-healthcheck/:
  • interface, routing, DNS, connectivity checks
• Veritas storage toolkit:
  • VxVM disk detection
  • diskgroup extension
  • volume/filesystem resize
  • VCS freeze/unfreeze workflow
• GPFS storage toolkit:
  • cluster validation
  • NSD planning
  • filesystem expansion
  • rebalance
• Runbook-style structure and step-based execution.

Changed

• Moved Linux operations scripts into infra-run/scripts/bash/os-healthcheck/ to keep host health and troubleshooting checks grouped together.

Notes

• All scripts default to dry-run where change actions are present.
• Designed for safety and readability.
• No destructive actions without explicit confirmation.