Modernizing a legacy app using Windows Containers and Kubernetes: Challenges and Lessons learned
summary
Legacy clinical app with ~200 separate VM installs migrates to Azure Kubernetes Service (AKS) using Windows containers and Azure SQL to cut maintenance and cost. Proof of concept using Image2Docker produces two containers (legacy + modern), passes smoke tests, and runs in AKS, but required replacing in‑memory caching with Redis, switching file logging to Application Insights, moving scheduled tasks to Kubernetes CronJobs, and resolving license/certificate and hybrid Linux master/Windows node issues; overall migration succeeds with unexpected operational changes needed.
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chapters (7)
- 0:00Start
- 2:47Benefits
- 3:21Technologies
- 9:50Less known issues
- 10:31Windows Container Limitations in Kuberne and AKS
- 13:46Learnings
- 15:56Azure useful links
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