How to migrate a on premise application to anthos without change the code

[Sivasubramani]

I want to learn cloud migration of applications to anthos. 

[devenes]

Hi @Sivasubramani 

Could you please provide additional details? Are your applications running in your Kubernetes cluster on your on-premises server? Or do they not work on any Kubernetes cluster?

[markWyatt]

Migrating an on-premise application to Anthos without changing the code involves several steps. Anthos is a modern application platform developed by Google Cloud that enables you to build, deploy, and manage applications across different environments, including on-premises data centers. Here's a general guide to help you with the migration process:

Prerequisites:

1. Understand Anthos: Familiarize yourself with Anthos and its components, such as Anthos GKE (Google Kubernetes Engine), Anthos Config Management, and Anthos Service Mesh.

2. Assess Your Application: Evaluate your existing on-premise application to ensure it meets the requirements for migration to Anthos. Anthos is particularly well-suited for containerized applications orchestrated with Kubernetes.

Steps:

1. Containerize Your Application:

   • Convert your application into a containerized format, such as Docker containers. This involves packaging your application and its dependencies into containers.
   • Ensure that your application runs successfully in a containerized environment on-premise.

2. Deploy Kubernetes on-Premise:

   • Set up a Kubernetes cluster on your on-premise infrastructure. You can use Anthos GKE On-Prem for this purpose.
   • Follow the documentation provided by Google Cloud for deploying Anthos GKE On-Prem.

3. Deploy Anthos Components:

   • Install and configure Anthos components like Anthos Config Management and Anthos Service Mesh on your Kubernetes cluster.

4. Migrate Application to Kubernetes:

   • Deploy your containerized application to the Kubernetes cluster on-premise. This step involves creating Kubernetes manifests or using deployment tools.

5. Networking and Security:

   • Configure networking to allow communication between your on-premise environment and other Anthos-enabled environments.
   • Implement security policies and access controls using Anthos Service Mesh and other Anthos security features.

6. Monitoring and Logging:

   • Set up monitoring and logging for your application using tools like Google Cloud Monitoring and Logging. Anthos provides integrations with these services.

7. Testing:

   • Perform thorough testing to ensure that your application works as expected in the Anthos environment.

8. Scale and Optimize:

   • Leverage Anthos features to scale your application and optimize its performance.

Considerations:

• Configuration Management: Utilize Anthos Config Management to manage and enforce policies across your Kubernetes clusters.

• Service Mesh: If your application relies on microservices, consider using Anthos Service Mesh to manage service-to-service communication, monitoring, and security.

• Data Migration: If your application uses databases, ensure a smooth data migration process. Anthos doesn't provide built-in database migration tools, so you might need to handle this separately.

• Leverage Google Cloud Services: Take advantage of Google Cloud services and features that complement Anthos, such as Cloud Identity and Access Management (IAM), Cloud Monitoring, and Cloud Logging.

Always refer to the latest documentation provided by Google Cloud for Anthos, as tools and features may have evolved since my last knowledge update in January 2022.....................