Tag: Migration
-
Storage and Data Assessment, vSphere CSI and Persistent Volumes (TKGI to OpenShift Series, Part 9)
A working method for inventorying persistent volumes on a TKGI estate, mapping storage classes onto OpenShift 4 vSphere CSI, and sizing restore windows before wave one starts. Includes the RWX trap and the storage class rename that leaves PVCs Pending forever.
-
Security Context Constraints and Pod Admission, the Biggest Portability Gap (TKGI to OpenShift Series, Part 7)
Security Context Constraints reject workloads that ran for years on TKGI, and no migration tool fixes that for you. Field level mapping, five real rejection errors, and the remediation paths ranked by cost.
-
Application Assessment and Migration Waves for OpenShift (TKGI to OpenShift Series, Part 6)
Scoring 47 TKGI namespaces on six signals turns a flat inventory into four migration waves. Here is the rubric, the wave rules, and why business criticality is the wrong sort key.
-
Inventorying the TKGI Estate (TKGI to OpenShift Series, Part 5)
Before you design an OpenShift target you need an honest picture of what TKGI is actually running. Here is the read only discovery sweep I run across a three cluster estate, and the four things it turns up that nobody expected.
-
Business Case, Subscription Costs and a Phased Timeline (TKGI to OpenShift Series, Part 4)
Sizing OpenShift core pair subscriptions for a three cluster TKGI estate, the ten month double run window that dominates the budget, and a twelve month phased plan against the October 2027 clock.
-
Why This Is a Migration, Not an Upgrade (TKGI to OpenShift Series, Part 3)
No tool converts a TKGI cluster into an OpenShift cluster. Here is the carry over ledger for a real estate, and what calling this an upgrade costs you in capacity, schedule and credibility.
-
TKGI and OpenShift Architecture Compared, Component by Component (TKGI to OpenShift Series, Part 2)
A component by component architecture comparison of TKGI and OpenShift Container Platform 4, covering control planes, node lifecycle, networking, admission control and the operational trade offs that decide migration effort.
-
What OpenShift Offers a TKGI Estate, and Why TKGI Is Winding Down (TKGI to OpenShift Series, Part 1)
TKGI reaches official End of Support in October 2027 and is already incompatible with VCF 9.1 and NSX 9.1. Here is why OpenShift 4 is a credible landing place, how it maps to what you run today, and the migration tooling assumption that costs teams a sprint.
-
Decommissioning TKGI and Ops Manager After the VKS Migration (TKGI to VKS Series, Part 26)
TKGI is idle and VKS carries production, so now you retire the old platform. A step by step teardown of TKGI clusters, NSX-T objects, BOSH and Ops Manager, with the point of no return marked and the capacity handed back to VCF 9.
-
Production Cutover to VKS, Traffic Shift, Validation and Rollback (TKGI to VKS Series, Part 23)
The production move from TKGI to VKS in one runbook: lower the DNS TTL ahead of time, shift traffic at a load balancer you control, validate the real user path, and keep a rollback that takes seconds because the old platform stays warm.
-
VKS Pilot Migration, One Non-Prod Cluster End to End (TKGI to VKS Series, Part 22)
A pilot runs the whole TKGI to VKS playbook against one non-prod cluster, start to finish, so your production cutover repeats a proven run instead of improvising under load. Here is the end to end runbook, with real timings and the failures to expect.
-
Secrets, Config and CI/CD Pipeline Migration to VKS (TKGI to VKS Series, Part 21)
Move plain secrets and ConfigMaps with Velero, re-seal sealed secrets against VKS, and give your CI/CD pipeline a real service account instead of a human login.
Architect’s Toolkit
PJ’s Tools
- Infra 360 Hub – All Series
- VCF 9 Interactive Walkthroughs
- VCF Design Cheatsheet
- VCF Upgrade Planner
- VCF 9 Series Hub
- VCF Deployment Hub
- AI Stack Hub
- AI Infra Sizing & Cost Calculator
- LLM & RAG Cost Calculator
- DrJhaGPT – Ask Pranay
VMware Cloud Foundation
- VCF Documentation
- VCF 9 Planning & Preparation Workbook
- VCF Bill of Materials (BoM)
- VMware Compatibility Guide
- VMware Interoperability Matrix
- VMware Configuration Maximums
- VMware Ports & Protocols
- VMware Hands-on Labs
- RVTools Download
Nutanix
AI & Cloud-Native Platform
- NVIDIA Build (Model Catalog)
- NVIDIA AI Enterprise Reference Architecture
- NVIDIA NIM Performance Benchmarking
- NVIDIA NGC Catalog
- NeMo Microservices Helm Chart
- Helm Charts Repository
- Hugging Face Models
Architecture & Design
About the Author
Dr Pranay Jha
Dr. Pranay Jha is a Cloud and AI Consultant with 18+ years of experience in hybrid cloud, virtualization, and enterprise infrastructure transformation. He specializes in VMware technologies, multi-cloud strategy, and Generative AI solutions. He holds a PhD in Computer Applications with research focused on Cloud and AI, has published multiple research papers, and has been a VMware vExpert since 2016 and a VMUG Community Leader.
You May Have Missed
DrJha