Enterprise Azure DevOps & Cloud Platform Engineer Loop: Key Vault, Terraform State & AKS Triage
1. Loop Overview & Candidate Context
Full debrief of an Enterprise Azure Cloud Platform loop: Handling Key Vault 403 outages, breaking Terraform state locks safely, App Service deployment slot database connection leaks, and non-backward-compatible database migration pipeline rollbacks.
2. Detailed Round-by-Round Breakdown
Round 1: Azure Platform Architecture & Hybrid Cloud Networking (60 mins)
Deep dive into Azure Virtual Networks (VNet peering, Private Endpoints, Azure Bastion, NSG flow logs), hub-and-spoke landing zones, and transit routing.
Round 2: Azure Pipelines & Infrastructure as Code Scenario Triage (60 mins)
5 live troubleshooting scenarios: Pipeline green but app 500 down, self-hosted vs Microsoft-hosted agent timeouts, pipeline runtime exploding from 12m to 40m, and Terraform state lock recovery.
Round 3: Cloud Security, Identity & Secret Governance (60 mins)
Managed Identity vs Service Principals with Workload Identity Federation, resolving intermittent 403 Forbidden on Key Vault, and role-assignment propagation delays in Azure RBAC.
Round 4: Container Platforms (AKS) & Zero-Downtime Data Architecture (60 mins)
AKS deployment pulling old image despite ACR push, ingress controller path routing, and handling schema migrations that break backwards compatibility.
Round 5: Platform Leadership & Cloud Governance (45 mins)
Azure Policy enforcement, FinOps optimization across App Service plans, and enabling developer self-service while enforcing guardrails.
⚡ Exact Scenarios Asked & Matching Runbooks on This Hub:
The candidate encountered variations of these scenarios. Study the step-by-step diagnostic runbooks below:
- 👉 Azure DevOps Pipeline Green but Application Down After Deployment: Root Cause Analysis →
- 👉 Terraform Plan Suddenly Shows 6 Production Resources Destroyed: Prevention and Triage →
- 👉 Azure Pipeline Suddenly Receives 403 Forbidden Accessing Azure Key Vault: Root Cause Triage →
- 👉 Azure App Service Staging Slot Swap Causes Production to Connect to Staging Database: Root Cause and Fix →
- 👉 Failed Pipeline Leaves Remote Terraform State Locked — Safe Force-Unlock Procedure and Prevention →
- 👉 AKS Deployment Succeeds and New Image Exists in ACR but Users Still See Old Application Version: Triage Guide →
3. Candidate Retrospective: What Worked & Advice
- Master the distinction between Azure App Service slot settings and sticky connection strings; slot swaps without proper Sticky configs are a classic production disaster.
- For Azure DevOps pipelines, be intimately familiar with Workload Identity Federation (OIDC) replacing long-lived client secrets.
- Always address state locking and resource replacement mechanisms in Terraform when running through Azure RM provider updates.