Full-Stack Red Hat Specialist: From Bare-Metal RHEL Kernel Tuning to Multi-Cluster OpenShift, Satellite, JBoss & SSO
Steven Nagendran is an active Red Hat Certified Architect in Enterprise Linux (RHCA) and contracted Senior Red Hat Certified Instructor (RHCI) holding 12 verified Red Hat certifications. Over 24+ years, he has architected, migrated, and taught mission-critical Red Hat platforms for central banks, national oil & gas companies, telecom operators, and mass rapid transit networks across Asia, the Middle East, and Africa.
Across enterprise consulting and technical mentorship, Steven's Red Hat specialization covers hardening Red Hat Enterprise Linux 9 with SELinux and OpenSCAP (RH415), automating patching across thousands of hosts using Red Hat Satellite 6 (RH403) and Ansible Automation Platform 2.4 (AU374), centralizing enterprise authentication via Red Hat Identity Management (RH362) and Red Hat Single Sign-On (Keycloak), and clustering Java middleware on Red Hat JBoss EAP (AD248).
For organizations modernizing legacy hypervisors post-Broadcom acquisition, Steven leads end-to-end VMware vSphere to Red Hat OpenShift Virtualization (KubeVirt) migrations—combining Migration Toolkit for Virtualization (MTV), Ceph/OpenShift Data Foundation (DO370), and OVN-Kubernetes multi-network bridging. Official Red Hat training courses are delivered strictly on official Red Hat classroom lab environments through Authorized Red Hat Training Partners.
RHEL, Satellite 6 & Identity Management (IdM / SSO)
Enterprise architecture, security hardening, and fleet lifecycle management for mission-critical Red Hat Enterprise Linux estates.
- RHEL 8/9 architecture, kernel performance profiling (RH442), and SELinux/OpenSCAP compliance hardening (RH415)
- Red Hat Satellite 6 (RH403) architecture: Content Views, Capsule server topologies, Kickstart bare-metal provisioning, and automated errata compliance
- Red Hat Identity Management / FreeIPA (RH362) with Active Directory cross-forest Kerberos trusts, SSSD, HBAC, and PKI
- Red Hat Single Sign-On (Red Hat build of Keycloak) OIDC/SAML2 federation for enterprise portals and OpenShift clusters
OpenShift Container Platform & OpenShift Virtualization
Day-0 bare-metal/air-gapped installation, Day-2 multi-cluster GitOps operations, and VMware-to-OpenShift Virtualization cutovers.
- Connected & disconnected (air-gapped) OpenShift UPI/IPI cluster installations (DO322) on bare-metal, VMware, and cloud
- VMware vSphere to Red Hat OpenShift Virtualization (DO316) live VM migration using KubeVirt and Migration Toolkit (MTV)
- Enterprise persistent storage with Red Hat OpenShift Data Foundation (DO370 — Ceph RBD, CephFS, NooBaa S3 Metro-DR)
- Multi-cluster governance with Red Hat Advanced Cluster Management (RHACM), ArgoCD GitOps, and Tekton Pipelines (DO380)
Ansible Automation Platform (AAP 2.4+) & Event-Driven Ansible
Transforming manual sysadmin operations into auditable Configuration-as-Code pipelines across Linux, Windows, network switches, and cloud.
- Ansible Automation Controller (formerly Tower), Private Automation Hub, and custom Execution Environments (AU374)
- Event-Driven Ansible (EDA) rulebooks for automated self-healing remediation and ITSM/ServiceNow integration
- Configuration as Code (AU245) with GitOps pipelines, Molecule testing, Ansible-Lint, and Vault credential governance
- Automated OS patching, CIS compliance enforcement, and zero-downtime rolling application updates
JBoss EAP Middleware, DevOps CI/CD & OpenShift AI
High-availability Java middleware clustering, automated Jenkins/GitOps software delivery, and on-premise GPU-accelerated AI platforms.
- Red Hat JBoss Enterprise Application Platform (AD248) standalone & domain mode clustering, Infinispan session replication, JMS queues, and SSL realms
- CI/CD pipeline engineering with Jenkins, Git, SonarQube, and Nexus targeting OpenShift deployments (DO400)
- Private hybrid AI deployment with Red Hat OpenShift AI (AI067): JupyterHub workbenches, NVIDIA GPU Operator, KServe model serving, and distributed Ray
- Rootless container engineering with Podman, Buildah, and Skopeo (DO189)
Official Red Hat Classroom Labs & Performance-Based Exam Readiness
All official Red Hat courses taught by Steven are delivered strictly using official Red Hat classroom lab environments through Authorized Red Hat Training Partners.
- Official Red Hat training (RHEL, OpenShift, OpenShift Virtualization, Ansible AAP, Satellite 6, JBoss EAP, IdM/SSO, OpenShift AI) runs on official Red Hat-provisioned classroom hardware via Authorized Red Hat Training Partners.
- Timed, performance-based exam readiness coaching aligned with official Red Hat practical certification exams.
- Enriched with Steven's real production architecture and troubleshooting insights from deployments at Sudatel, Qatar National Petroleum, Electronic Banking Services (EBS), and MRT Corp Malaysia.
Production Deployments & Migration Track Record
Steven brings real architectural lessons from these enterprise deployments directly into every consulting engagement and hands-on classroom.
Sudatel — Deployment and Configuration of Red Hat OpenShift on VMware Infrastructure
Planning, Setting Up infrasturcture, Virtual Machines, Load Balancer and DNS for Implementation of OpenShift for usage of TIBCO Business Works Software.
Qatar National Petroleum — Red Hat Enterprise Linux Implementation
Implementation of Red Hat Enterprise Linux as LOB application platform and training delivered for the IT team for administrations.
EBS — Red Hat Enterprise Linux Implementation
Implementation and Upgrading existing infrastructure to Red Hat Enterprise Linux to run Production Database and LOB.
MRT Rail Project 1 (CMMS) — Implementation and Delivery of Computerized Maintenance Management (CMMS)
The project involves Implementing Web Server, Database, and User Interface Modification. The technology involved, Oracle Database, Microsoft Database, Oracle Linux, Red Hat Linux, MariaDB, Windows 2012.
MRT Rail Project 1 (TMS) — Implementing TMS System (Train Management System)
The project involves Designing and Creating a TMS system for the train (MRT) logs to be sent to a Database in MRT Depot. Project developed fully in Linux and Linux-based systems.
Faisal Islamic Bank (FIB) — Physical to Virtual Migration
Full migration of Physical servers ranged from Windows and Red Hat Systems running Database and LOB Applications to VMware Virtual Infrastructure
Dal Group — VMware Migration ( Physical to Virtual and Full Infrastructure reshuffle )
Full migration of Physical servers ranged from Windows and Red Hat Systems running Database and LOB Applications to VMware Virtual Infrastructure. Full restructure of Production Systems and Network to meet Virtualization Datacenter.
Courses & Curricula Taught by Steven (26 Tracks)
Official vendor courses are delivered through Authorized Training Partners on official vendor labs; custom-built tracks run on Cognitoz BetaLab.
Red Hat Enterprise Linux Technical Overview
Fundamental command-line survival skills, file system hierarchy, package management, and basic system administration in Red Hat Enterprise Linux.
Red Hat System Administration I
Core system administration tasks on RHEL: managing access from the command line, files, users/groups, processes, systemd services, SSH, and storage partitions.
Red Hat Enterprise Linux Performance Tuning
Analyzing and optimizing RHEL system performance: kernel profiling, memory management, disk I/O schedulers, network subsystem bottlenecks, and tuned profiles.
Red Hat Security: Linux in Physical, Virtual, and Cloud
Comprehensive host security: SELinux policy tuning, OpenSCAP compliance scanning, USBGuard, LUKS disk encryption, auditd logging, and secure boot.
Red Hat Certified System Administrator (RHCSA) Exam Readiness
Intensive hands-on lab drill preparing candidates for the performance-based EX200 exam: storage configurations, VDO/LVM, containers with Podman, and auto-mounting.
Ansible Basics: Automation Technical Overview
Introduction to agentless enterprise automation: Ansible playbooks, inventory management, modules, and basic configuration management.
Red Hat Enterprise Linux Automation with Ansible
Complete preparation for RHCE: authoring complex playbooks, Jinja2 templates, role architecture, Ansible Vault encrypted variables, and error handling.
Red Hat Enterprise Linux Automation with Ansible and Exam
Full 4-day intensive automation training plus live proctored RHCE (EX294) certification examination.
Developing Advanced Automation with Red Hat Ansible Automation Platform
Scaling enterprise automation with Ansible Automation Platform (AAP): Automation Controller (Tower), Private Automation Hub, Execution Environments (ansible-builder), and Event-Driven Ansible (EDA).
Configuration as Code for Enterprise Automation with Red Hat Ansible Automation Platform
Treating infrastructure automation as production code: Git repository workflows, automated testing with Molecule, Ansible Lint, and continuous deployment pipelines.
Red Hat Certified Engineer (RHCE) Exam Preparation
Timed simulation labs covering all RHCE exam domains: multi-tier application deployments, firewalld/SELinux automation, storage role management, and troubleshooting playbooks.
Containers, Kubernetes and Red Hat OpenShift Technical Overview
High-level overview of Linux containers, Docker/Podman container runtimes, Kubernetes cluster mechanics, and Red Hat OpenShift platform capabilities.
Red Hat OpenShift for Developers Technical Overview
Developer perspective on OpenShift: containerizing source code, deploying applications from Git, configuring health probes, and managing container logs.
Red Hat OpenShift Development I: Introduction to Containers with Podman
Building, running, and managing production containers without daemons using Podman, Skopeo, Buildah, and rootless user namespaces.
Red Hat OpenShift Administration I: Operating a Production Cluster
Daily operational tasks on an enterprise OpenShift cluster: managing users, RBAC, configuring storage, deploying containerized applications, and cluster troubleshooting.
Red Hat OpenShift Administration II: Configuring a Production Cluster
Configuring, managing, and hardening enterprise OpenShift clusters: identity federation, internal image registry, network operators, ingress controllers, quotas, and cluster updates.
Red Hat OpenShift Administration III: Scaling Deployments in the Enterprise
Advanced enterprise scaling: GitOps with ArgoCD, OpenShift Pipelines (Tekton), Red Hat Advanced Cluster Management (RHACM), and automated compliance enforcement.
Managing Virtual Machines with Red Hat OpenShift Virtualization
Running enterprise legacy virtual machines alongside cloud-native containers using KubeVirt on OpenShift: Migration Toolkit for Virtualization (MTV), live migration, storage, and networking.
Red Hat OpenShift Installation Lab
Hands-on installation lab: User-Provisioned Infrastructure (UPI), Installer-Provisioned Infrastructure (IPI), disconnected / air-gapped deployments, and mirror registries.
Enterprise Kubernetes Storage with Red Hat OpenShift Data Foundation
Unified software-defined storage for OpenShift with Ceph / Rook: block, file, and S3 object storage for stateful container workloads.
Red Hat Certified OpenShift Administrator Exam Preparation
Practical drill simulations on real OpenShift multi-node clusters covering identity, certificate management, storage quotas, and security contexts.
Red Hat Security: Identity Management and Authentication
Centralizing Linux identity with Red Hat IdM (FreeIPA): Kerberos authentication, Active Directory cross-forest trusts, host-based access control (HBAC), and sudo rules.
Red Hat Satellite 6 Administration
Centralized lifecycle management: software content views, automated provisioning with PXE/Kickstart, errata patch management, and Capsule server topologies.
Red Hat JBoss Application Administration I
Operating and clustering Red Hat JBoss Enterprise Application Platform (EAP): domain mode, standalone configurations, datasource connections, and high-availability session replication.
Red Hat OpenShift AI Technical Overview
Private hybrid AI on Kubernetes with Red Hat OpenShift AI: managed Jupyter notebooks, Ray distributed training, KServe model serving, and GPU acceleration.
Red Hat DevOps Pipelines and Processes: CI/CD with Jenkins & Git
Master DevOps continuous integration and continuous deployment (CI/CD) pipelines using Jenkins, Git version control, SonarQube quality gates, Nexus artifact repositories, and automated container deployment to OpenShift.
Active Certifications & Accreditations
Frequently Asked Questions — Red Hat Enterprise Specialist
Does Steven deliver Red Hat Satellite (RH403), JBoss EAP (AD248), and Red Hat SSO / Keycloak training and consulting in Malaysia?
Yes. Steven Nagendran (RHCA, RHCI) delivers official authorized Red Hat corporate training (via Authorized Red Hat Training Partners) as well as independent production architecture consulting and implementation for Red Hat Satellite 6 Administration (RH403), Red Hat JBoss Application Administration (AD248), Red Hat Security: Identity Management & Authentication (RH362), and Red Hat Single Sign-On (Keycloak) across Malaysia, Singapore, and globally.
Can Steven assist an organization with migrating from VMware vSphere to Red Hat OpenShift Virtualization?
Yes. As a Red Hat Certified Specialist in OpenShift Virtualization and Red Hat Certified Architect (RHCA) in Enterprise Linux, with 24+ years of both VMware (VCI, VCP-DCV) and Red Hat field architecture, Steven leads end-to-end VMware-to-OpenShift Virtualization assessments, Proof-of-Concepts (PoCs), Migration Toolkit for Virtualization (MTV) cutovers, Ceph/ODF storage design, and engineering team enablement.
How are Red Hat training courses coordinated for HRD Corp (HRDF) SBL-Khas claims in Malaysia?
Steven Nagendran is an HRD Corp (HRDF) Certified Trainer (Cert No: TTT/20188) and contracted Red Hat Certified Instructor (RHCI). Official Red Hat courses and HRDF-claimable cohorts are fulfilled through Authorized Red Hat & HRD Corp-Registered Training Partners where Steven's RHCI and TTT/20188 credentials are registered. Contact Steven to align dates and coordinate through an authorized training partner.
What lab environments are used for official Red Hat courses?
All official Red Hat courses strictly utilize official Red Hat classroom lab environments provisioned through Authorized Red Hat Training Partners, ensuring 100% vendor compliance and alignment with Red Hat certification exams.