AKS Namespace Migration + Azure DevOps DR Deployment (UK Environment)

AKS Namespace Migration + Azure DevOps DR Deployment (UK Environment) - Printable Version

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AKS Namespace Migration + Azure DevOps DR Deployment (UK Environment) - rishi - 04-07-2026

Overview

This document explains the complete process to:

Migrate Kubernetes namespace resources
Configure Azure DevOps pipeline for DR (UK)
Deploy application in new AKS cluster
Validate and troubleshoot issues

Step 1: Navigate to Project Directory

Code:
cd /home/aks-live/24x7/AKS-Prod/sadad-POS-Queue-Consumer

ls -ltr

Identify the folder:

pos-queue-consumer-fileshare/

Step 2: Go to Fileshare Directory

Code:
cd pos-queue-consumer-fileshare/

ls -ltr

Important files:

[list]

[*]pos-queue-consumer-storage-secret.yaml

[*]azure-file-pvc.yaml

[*]azure-file-sc.yaml

[/list]

Step 3: Update Storage Secret

Code:
vi pos-queue-consumer-storage-secret.yaml

Update:

data:

  azurestorageaccountkey: <BASE64_KEY>

  azurestorageaccountname: <BASE64_NAME>

Step 4: Verify Base64 Values

Code:
echo "<value>" | base64 -d

Step 5: Create Namespace

Code:
kubectl create ns sadad-online-pos-queue-consumer

Step 6: Apply Resources (Order Important)

Code:
1. Apply Secret

kubectl apply -f pos-queue-consumer-storage-secret.yaml

2. Apply Storage Class & PVC

kubectl apply -f azure-file-sc.yaml -f  azure-file-pvc.yaml

Step 7: Apply Remaining Secrets

Code:
cd ..

kubectl apply -f az-repo-dev-secret.yaml

kubectl apply -f pos-queue-consumer-env-azure-secrets.yaml \

              -f pos-queue-consumer-env-config-secrets.yaml \

              -f pos-queue-consumer-env-email-secrets.yaml \

              -f sadad-online-pos-queue-consumer-secrets.yaml

Step 8: Azure DevOps – Download Deployment File

Go to:
Repos → Sadad-POS-Queue-Consumer → manifests

Download:
deploy-live.yaml

Step 9: Create UK Deployment File

Rename:
deploy-live.yaml → deploy-live-uk.yaml

Update DB:
- name: DB_HOST
value: <UK_DB_IP>

Step 10: Upload File to Repo

Upload to:
manifests/

Commit message:
Added deploy-live-uk for DR UK

Step 11: Clone Release Pipeline

Go to:
Pipelines → Releases → sadad-pos-queue-consumer

Click Edit
Clone Live Stage

Step 12: Rename Stage

Sadad-Live-Pos-Queue-Consumer-UK

Step 13: Configure Kubernetes Connection

Update:

Subscription: Sadad - Azure
Cluster: Sadad-Online-UK-AKS
Namespace: sadad-online-pos-queue-consumer
Service Connection: sadad-online-pos-queue-consumer-uk

Step 14: Update Deployment File Path

$(System.DefaultWorkingDirectory)/Sadad-POS-Queue-Consumer/drop/deploy-live-uk.yaml

Step 15: Update Print Tag Script

Replace:
deploy-live.yaml → deploy-live-uk.yaml

Step 16: Run Pipeline

After commit → pipeline triggers automatically

Step 17: Deploy Release

Go to Releases → Select new release
Click:

Deploy
Approve

Step 18: Verify Deployment

kubectl get pods -n sadad-online-pos-queue-consumer
kubectl logs <pod>

Common Issue: Volume Mount Error

Error:
MountVolume failed: No such file or directory

Fix:
az storage share create \
--name pos-queue-logs \
--account-name <storage_account> \
--account-key <key>

Then restart pod:
kubectl delete pod <pod-name>

Final Validation

kubectl get pods

Expected:
Running

Summary

Setup namespace
Apply secrets + PVC
Modify deployment YAML
Update Azure DevOps pipeline
Deploy via release
Approve and validate

Best Practices

Always clone existing pipeline
Verify secrets before deployment
Keep naming consistent across environments
Validate storage before pod start

Migration Completed Successfully