Overview
IBM AIX
Enterprise UNIX on Power — LVM, NIM, PowerVM, security and administration roadmap.
Technology Overviews
Overview
Power Systems
IBM enterprise servers — architecture, virtualization, scalability and reliability.
Overview
VIOS
Virtual I/O Server — SEA, vSCSI, shared storage and PowerVM networking.
Overview
HMC
Hardware Management Console — LPAR management, firmware and consoles.
Overview
Storage
Enterprise storage for Power and AIX — LVM, SAN, FlashSystem and multipath.
Topic Hubs
Learning Path
Sendmail & Email on AIX
7-article path from email architecture through AWS SES integration and automation.
Learning Path
LVM & Storage Administration
AIX mirrorvg/splitvg, Power storage, SAN, FlashSystem and multipath on IBM systems.
Email Series
Email Series
Understanding Email Architecture in AIX
Learn how AIX handles mail from submission to delivery: MUA to MTA, sendmail queues, aliases, smart hosts, and where TLS, SPF, and DKIM fit in production.
Email
Understanding Sendmail in AIX
How the Sendmail daemon, mail queue, configuration files, and aliases work on AIX before you configure an SMTP relay.
Email
Installing Sendmail on AIX for Modern SMTP Authentication
Install Sendmail from the AIX Toolbox, verify SASL and TLS support, resolve package dependencies, and prepare for authenticated SMTP relays such as AWS SES.
Email
Configuring Sendmail as an SMTP Client on IBM AIX
Configure sendmail.cf, SMART_HOST, relay settings, and daemon management so AIX forwards outbound mail to a trusted SMTP relay.
Email
Configuring Amazon SES SMTP Authentication with Sendmail on IBM AIX
Authenticate AIX Sendmail with Amazon SES using SMTP credentials, authinfo, SASL, and STARTTLS, then test and verify delivery.
Email
Troubleshooting Sendmail on IBM AIX
Diagnose queue hangs, auth failures, DNS and TLS issues with a fixed check order: service, config, mailq, network, then logs.
Email
Automating Email Notifications on IBM AIX Using Sendmail
Build reusable shell notification scripts for alerts, cron reports, and operator mail using mailx, Sendmail, and structured templates.
Core AIX Administration
Security
AIX OS Hardening and Security
TCB, Trusted Execution, aixpert hardening, VAPT for LPARs, and FLRTVC-driven patch currency.
VIOS
IBM VIOS Server Upgrade from Version 3.1.2.x to 3.1.4.x Using CD
VIOS 3.1.2.x to 3.1.4.x upgrade runbook: health checks, alt_disk backup, dual-VIOS order, SEA HA mode changes, and rollback.
LVM
From mirrorvg to splitvg
Convert mirrored rootvg to split mirror for cloning, DR testing, and fast fallback without full NIM rebuilds.
External · Medium
AIX LPAR Attention LED
Identify, activate, and clear chassis attention LEDs via HMC, ASMI, and diag commands safely in production.
External · Medium
AIX Live Partition Migration
Prerequisites, MSP tuning, network and storage validation for seamless LPM across POWER9/POWER10 frames.
External · Medium
AIX NIM Installation Issues
Resolve common NIM client installs: tftp, Cstate boot, spot mismatches, network boot, and resource allocation errors.
Quick Reference Guides
Quick Reference
AIX Security Hardening
Command cheat sheet for TCB, trusted execution, aixpert, and SSH hardening — links to the full article.
Quick Reference
NIM Administration
Reference for NIM master setup, resources, client installs, and common commands.
Technology Overviews
Overview
Linux
Open-source OS for servers and cloud — commands, distributions, DevOps and career paths.
Overview
Linux on Power
RHEL, SLES and Ubuntu on IBM Power — workloads, admin and performance.
Linux Administration
Learning Path
Rocky/RHEL Linux Performance & Power Optimization Series
Four practical guides covering battery optimization, Intel graphics acceleration, Firefox tuning, PowerTOP, TuneD, hardware video decoding, and complete laptop optimization on Rocky Linux 9.x.
Guide
Optimize Rocky/RHEL Linux 9.x with Xfce for Laptops
Faster dnf, shorter boot times, reclaimed kdump RAM, Firefox power tweaks, and automatic AC/battery TuneD profiles on a Rocky/RHEL Linux 9.x Xfce laptop.
Linux Fundamentals
Learning Series
Linux Fundamentals
Structured 10-chapter path from fundamentals to shell scripting — practical commands and lab-style examples.
Beginner
CHAPTER 1
Introduction to Linux
Learn Linux architecture, the kernel, shell, distributions, terminal basics, boot process, and the core concepts every Linux administrator should understand.
Beginner
CHAPTER 2
Linux File System and Essential Commands
Explore the Linux directory structure, navigation, file management, redirection, and the essential commands used daily by Linux administrators.
Beginner
CHAPTER 3
Linux Permissions and Ownership
Learn chmod, chown, chgrp, umask, ACLs, SUID, SGID, Sticky Bit, and Linux file security with practical examples.
Intermediate
CHAPTER 4
Linux Users and Groups Administration
Create and manage users, groups, passwords, sudo access, account policies, and user administration in enterprise Linux systems.
Intermediate
CHAPTER 5
Package Management & Text Processing
Install and manage packages with dnf, apt, and rpm, then filter logs and configs with grep, sed, awk, and cut.
Intermediate
CHAPTER 6
Processes, Signals & systemd
Inspect processes, send signals, control jobs, and manage services with systemctl and journalctl.
Intermediate
CHAPTER 7
Disks, Partitions & LVM
Device naming, partitioning, filesystem creation, and LVM volume management for enterprise Linux.
Intermediate
CHAPTER 8
Linux Networking Fundamentals
Learn IP addressing, SSH, DNS, routing, ping, ss, curl, wget, network utilities, and Linux connectivity troubleshooting.
Intermediate
CHAPTER 9
Persistent Mounts & Storage Operations
fstab by UUID, mount options, swap, NFS client mounts, and production storage troubleshooting.
Advanced
CHAPTER 10
Linux Shell Scripting
Build Bash scripts with variables, conditionals, loops, functions, and cron — practical automation for day-to-day admin work.
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