A concrete security module set for an edge AI backend: AES-256-GCM at rest, adaptive rate limiting, input validation, alerting, and automated scanning.
- Issue: Without explicit controls, an AI API is vulnerable to abuse (burst traffic), unsafe inputs (command/path traversal), leaked secrets, and silent security regressions from dependencies.
- Solution: Implemented five security modules: encryption at rest, enhanced rate limiting, advanced input validation, security monitoring + alerts, and vulnerability scanning with report generation.
- Used In: Used in the RADXA AI Suite TypeScript backend security package (`backend-ts`).
securitynodejstypescriptrate-limitingencryption
How to use a single, universal Ansible role to deploy static sites, PHP apps, or complex reverse proxies just by changing host variables.
- Issue: Needed a repeatable way to use a single, universal Ansible role to deploy static sites, PHP apps, or complex reverse proxies just by changing host variables.
- Solution: Implemented a practical runbook/automation pattern with clear safety checks, execution steps, and verification points.
- Used In: Used in Linux platform engineering, middleware operations, and datacenter modernization projects in regulated environments.
ansibleapacheproxytomcat
How to package Ansible dependencies into a portable, containerized Execution Environment (EE) for consistent automation across runners.
- Issue: Needed a repeatable way to package Ansible dependencies into a portable, containerized Execution Environment (EE) for consistent automation across runners.
- Solution: Implemented a practical runbook/automation pattern with clear safety checks, execution steps, and verification points.
- Used In: Used in Linux platform engineering, middleware operations, and datacenter modernization projects in regulated environments.
ansiblecontainersdevopsautomation
How to manage Linux server patching across different tiers (Database, Application, etc.) using Ansible limits and targeted groups.
- Issue: Needed a repeatable way to manage Linux server patching across different tiers (Database, Application, etc.) using Ansible limits and targeted groups.
- Solution: Implemented a practical runbook/automation pattern with clear safety checks, execution steps, and verification points.
- Used In: Used in Linux platform engineering, middleware operations, and datacenter modernization projects in regulated environments.
ansiblepatchingautomationsysadmin
A practical bash script to quickly map out group memberships, owned directories, and sudo privileges for specific service accounts.
- Issue: Needed a repeatable way to quickly map out group memberships, owned directories, and sudo privileges for specific service accounts.
- Solution: Implemented a practical runbook/automation pattern with clear safety checks, execution steps, and verification points.
- Used In: Used in Linux platform engineering, middleware operations, and datacenter modernization projects in regulated environments.
bashscriptingsecuritypermissions
A guide on how to resize a partition using fdisk, expand the LVM, and resize the filesystem without needing a reboot.
- Issue: Needed a repeatable way to resize a partition using fdisk, expand the LVM, and resize the filesystem without needing a reboot.
- Solution: Implemented a practical runbook/automation pattern with clear safety checks, execution steps, and verification points.
- Used In: Used in Linux platform engineering, middleware operations, and datacenter modernization projects in regulated environments.
lvmfdiskstoragesysadmin
A general workflow for handling Kerberos keytab lifecycle and deploying it securely with Ansible for Apache SSO.
- Issue: Needed a repeatable way to handle Kerberos keytab lifecycle and deploy it securely with Ansible for Apache Single Sign-On.
- Solution: Implemented a practical runbook/automation pattern with clear safety checks, execution steps, and verification points.
- Used In: Used in Linux platform engineering, middleware operations, and datacenter modernization projects in regulated environments.
ansiblesecuritykerberossso
A strategy for managing technical user permissions on Linux by linking local UNIX groups to centrally managed Active Directory groups.
- Issue: Needed a repeatable way to manage technical user permissions on Linux by linking local UNIX groups to centrally managed Active Directory groups.
- Solution: Implemented a practical runbook/automation pattern with clear safety checks, execution steps, and verification points.
- Used In: Used in Linux platform engineering, middleware operations, and datacenter modernization projects in regulated environments.
linuxactive-directoryiamsysadmin
A practical guide to standardize technical user creation, assigning static UIDs/GIDs, and avoiding conflicts in a large server fleet using Ansible.
- Issue: Needed a repeatable way to standardize technical user creation, assigning static UIDs/GIDs, and avoiding conflicts in a large server fleet using Ansible.
- Solution: Implemented a practical runbook/automation pattern with clear safety checks, execution steps, and verification points.
- Used In: Used in Linux platform engineering, middleware operations, and datacenter modernization projects in regulated environments.
ansiblelinuxuserssysadmin
Best practices for handling sensitive TLS/SSL certificates (.cer and .key files) using Ansible Vault to prevent accidental exposure.
- Issue: Needed a repeatable way to apply best practices for handling sensitive TLS/SSL certificates (.cer and .key files) using Ansible Vault to prevent accidental exposure.
- Solution: Implemented a practical runbook/automation pattern with clear safety checks, execution steps, and verification points.
- Used In: Used in Linux platform engineering, middleware operations, and datacenter modernization projects in regulated environments.
ansiblesecuritysslencryption
Step-by-step procedure to migrate an application directory to a new, larger logical volume with minimal downtime.
- Issue: Needed a repeatable way to migrate an application directory to a new, larger logical volume with minimal downtime.
- Solution: Implemented a practical runbook/automation pattern with clear safety checks, execution steps, and verification points.
- Used In: Used in Linux platform engineering, middleware operations, and datacenter modernization projects in regulated environments.
lvmrsyncselinuxmigration
A quick start guide to initialize and use Molecule with the Docker driver to test your Ansible roles before deploying.
- Issue: Needed a repeatable way to initialize and use Molecule with the Docker driver to test your Ansible roles before deploying.
- Solution: Implemented a practical runbook/automation pattern with clear safety checks, execution steps, and verification points.
- Used In: Used in Linux platform engineering, middleware operations, and datacenter modernization projects in regulated environments.
ansiblemoleculetestingdocker
A workflow for building CIS-hardened RHEL images using HashiCorp Packer and orchestrating the builds via StackGuardian.
- Issue: Needed a repeatable way to build CIS-hardened RHEL images using HashiCorp Packer and orchestrate the builds via StackGuardian.
- Solution: Implemented a practical runbook/automation pattern with clear safety checks, execution steps, and verification points.
- Used In: Used in Linux platform engineering, middleware operations, and datacenter modernization projects in regulated environments.
packerstackguardiandevopsrhelautomation
How to configure WAL archiving in PostgreSQL and resolve the 'Permission denied' SELinux errors when writing to a dedicated archive directory.
- Issue: Needed a repeatable way to configure WAL archiving in PostgreSQL and resolve the 'Permission denied' SELinux errors when writing to a dedicated archive directory.
- Solution: Implemented a practical runbook/automation pattern with clear safety checks, execution steps, and verification points.
- Used In: Used in Linux platform engineering, middleware operations, and datacenter modernization projects in regulated environments.
postgresqlselinuxdatabasebackup
How to configure /etc/fstab with systemd options to reliably mount network shares without blocking the boot process.
- Issue: Needed a repeatable way to configure /etc/fstab with systemd options to reliably mount network shares without blocking the boot process.
- Solution: Implemented a practical runbook/automation pattern with clear safety checks, execution steps, and verification points.
- Used In: Used in Linux platform engineering, middleware operations, and datacenter modernization projects in regulated environments.
systemdfstabnfscifs
A practical cheatsheet covering the most essential commands for managing RHEL systems on a daily basis.
- Issue: Needed a repeatable way to compile a practical cheatsheet covering the most essential commands for managing RHEL systems on a daily basis.
- Solution: Implemented a practical runbook/automation pattern with clear safety checks, execution steps, and verification points.
- Used In: Used in Linux platform engineering, middleware operations, and datacenter modernization projects in regulated environments.
LinuxRHELSystemAdminCLI
How to use katello-host-tools-tracer to reliably determine if a Linux server requires a reboot or daemon reload after patching.
- Issue: Needed a repeatable way to use katello-host-tools-tracer to reliably determine if a Linux server requires a reboot or daemon reload after patching.
- Solution: Implemented a practical runbook/automation pattern with clear safety checks, execution steps, and verification points.
- Used In: Used in Linux platform engineering, middleware operations, and datacenter modernization projects in regulated environments.
rhelpatchingsysadminsatellite
A careful, step-by-step guide on how to shrink an ext4 filesystem and its underlying Logical Volume (LV) to reclaim space.
- Issue: Needed a repeatable way to shrink an ext4 filesystem and its underlying Logical Volume (LV) to reclaim space.
- Solution: Implemented a practical runbook/automation pattern with clear safety checks, execution steps, and verification points.
- Used In: Used in Linux platform engineering, middleware operations, and datacenter modernization projects in regulated environments.
lvmstorageext4sysadmin
How to automate interactive vendor installers (like SAS Software Depot) by recording response files and executing them via Ansible.
- Issue: Needed a repeatable way to automate interactive vendor installers (like SAS Software Depot) by recording response files and executing them via Ansible.
- Solution: Implemented a practical runbook/automation pattern with clear safety checks, execution steps, and verification points.
- Used In: Used in Linux platform engineering, middleware operations, and datacenter modernization projects in regulated environments.
ansiblelinuxinstallationautomation
A technical overview of modern data center topologies, leaf-spine designs, and the concept of stretched networks for seamless VM migration.
- Issue: Needed a repeatable way to understand and implement modern data center topologies, leaf-spine designs, and the concept of stretched networks for seamless VM migration.
- Solution: Implemented a practical runbook/automation pattern with clear safety checks, execution steps, and verification points.
- Used In: Used in Linux platform engineering, middleware operations, and datacenter modernization projects in regulated environments.
networkingarchitectureleaf-spinedatacenter
Best practices for organizing your Ansible inventory, group_vars, and host_vars to cleanly separate development and production environments.
- Issue: Needed a repeatable way to apply best practices for organizing your Ansible inventory, group_vars, and host_vars to cleanly separate development and production environments.
- Solution: Implemented a practical runbook/automation pattern with clear safety checks, execution steps, and verification points.
- Used In: Used in Linux platform engineering, middleware operations, and datacenter modernization projects in regulated environments.
ansibleiacdevopsarchitecture
How to resolve 'Permission Denied' and 'RPC: Unable to receive' errors when mounting NFS shares, focusing on network routing issues.
- Issue: Needed a repeatable way to resolve 'Permission Denied' and 'RPC: Unable to receive' errors when mounting NFS shares, focusing on network routing issues.
- Solution: Implemented a practical runbook/automation pattern with clear safety checks, execution steps, and verification points.
- Used In: Used in Linux platform engineering, middleware operations, and datacenter modernization projects in regulated environments.
nfstroubleshootingnetworkingsysadmin
How to resolve 'Permission Denied' errors during 'su' attempts by identifying conflicts between Active Directory and PAM modules.
- Issue: Needed a repeatable way to resolve 'Permission Denied' errors during 'su' attempts by identifying conflicts between Active Directory and PAM modules.
- Solution: Implemented a practical runbook/automation pattern with clear safety checks, execution steps, and verification points.
- Used In: Used in Linux platform engineering, middleware operations, and datacenter modernization projects in regulated environments.
linuxpamsecuritysssdtroubleshooting