AWS → Another Cloud Migration

Mon, 01 Jan 0001 00:00:00 +0000

Cloud Infrastructure Migration from AWS to a Cost-Optimized Private Cloud

Client

Confidential

Challenge

The client needed to migrate their entire AWS infrastructure to an alternative cloud provider to reduce costs and eliminate vendor lock-in. The key requirements were minimal downtime, zero functionality loss, and a reliable rollback strategy.

Solution

1. Audit & Planning

Full inventory of AWS resources (EC2, RDS, S3, VPC)
Service mapping: AWS → target cloud equivalents
Phased migration plan with clear milestones
Rollback strategy for each stage

2. Infrastructure Preparation

Terraform for IaC on the target platform
VPC, subnets, and security groups configuration
Managed PostgreSQL and Redis deployment
Object Storage setup (S3-compatible)

3. Data Migration

Database replication via DMS
S3 → Object Storage sync
Docker image transfer to private Container Registry
Full validation on staging environment

4. Production Cutover

DNS failover for gradual traffic switching
Real-time metrics monitoring during cutover
AWS kept on standby for emergency rollback
Final cutover completed in 2 hours

Technologies

AWS

Terraform

Prometheus

Grafana

GitLab CI

Results

✅ Cost reduction: 40% savings (from $15k to $9k/month)
✅ Downtime: only 2 hours vs. 8 hours planned
✅ Vendor independence: full exit from AWS with no functionality loss
✅ Performance: maintained at the same level post-migration
✅ Compliance: data residency and security requirements met

Migration and DevOps for a CS-Cart Marketplace

Mon, 01 Jan 0001 00:00:00 +0000

Infrastructure and Deployment of a Multi-Vendor CS-Cart Marketplace

Client

Multi-vendor marketplace

Challenge

Revive a legacy marketplace project and migrate it from standard shared hosting to a modern cloud environment. Ensure high availability, build CI/CD infrastructure, set up test environments, integrate third-party delivery services, and automate routine operations with AI. At the final stage, prepare an on-premise server (NAS) on the client side for cold repository storage.

Solution

1. Infrastructure in Yandex Cloud (Terraform)

Built IaC configuration (Terraform) to provision Yandex Cloud infrastructure (virtual networks, VMs).
Configured separate virtual machines for production and development environments.
Attached and partitioned additional disks, deployed automated backups for databases and files to Yandex Object Storage (S3).
Used Yandex Cloud Postbox for reliable service email delivery (domain, SPF, DKIM configured).

2. Containerization and Microservices

Migrated the marketplace from classic hosting to a Docker-based VPS environment.
Built a custom Dockerfile for CS-Cart and a docker-compose stack with a microservice-oriented web server architecture.
Established full-featured dev and prod environments.
Configured deployment pipelines via a local Git server (Forgejo).

3. Marketplace Platform (CS-Cart)

Upgraded the CS-Cart core and optimized the database by removing obsolete, unused plugins.
Deployed a clean platform installation with a new commercial theme.
Configured multi-vendor business logic: role separation and seller dashboards.
Integrated and configured modules: dynamic product loading, AI capabilities, smart live search, and SEO module.
Integrated shipping (CDEK) and payment systems. Launched automated data exchange with 1C accounting systems.

4. Automation and n8n

Deployed n8n process orchestration.
Integrated ChatGPT API to automate repetitive operations such as content generation and normalization.
Configured workers and triggers for store business workflows.

5. Security and Cloudflare

Configured Cloudflare Proxy DNS.
Implemented Cloudflare Turnstile to reduce spam during sign-up and checkout flows.
Added bot protection: disabled direct registrations, configured strict caching, and filtered low-quality traffic.
Installed SSL certificates and configured proper redirects.

6. On-Premise Infrastructure and Documentation

Set up a dedicated subdomain with a wiki engine for technical and user documentation.
Implemented local infrastructure in the client’s office based on Synology NAS: Docker, S3 buckets, and backups.
Deployed a local Git server (Forgejo) with a CI/CD runner for version control and long-term preservation of project assets.
Collected a complete backup of Terraform states, passwords, codebases, and configurations.

7. Project Archival and Repositories

Migrated the production site to backup hosting for archival mode and disabled active synchronizations.
Procured and configured Synology NAS in the office: external access, Docker, S3 buckets.
Deployed Forgejo with a runner under the git.* domain.
Repositories included: website source code, theme and add-ons, documentation, n8n workflows, Telegram bots, DB backups, terraform-yandex, terraform-cloudflare, and password vault.

Technologies

Docker

Terraform

Yandex Cloud

Nginx

Forgejo

Linux

Results

✅ Infrastructure: shared hosting → VPS in Yandex Cloud via Terraform, fully containerized with Docker
✅ Platform: clean CS-Cart Multi-Vendor installation replaced a heavily modified legacy core
✅ Theme and modules: commercial theme, live search, UX/UI improvements, SMS authentication, AJAX catalog
✅ Integrations: CDEK, Boxberry, Russian Post, Faster Payments System (SBP), and dual-environment 1C exchange
✅ Documentation: wiki on docs.* subdomain with a complete project structure
✅ Automation: n8n + ChatGPT API for routine operations
✅ Backups: Yandex Object Storage + mirrored copy on office Synology NAS
✅ Git: self-hosted Forgejo on NAS with runner and full project repositories
✅ Archival handover: project fully transferred to the client’s on-premise Synology NAS, including a private Forgejo Git server.

Clouds on DevOps Engineer & CloudAdmin

AWS → Another Cloud Migration

Cloud Infrastructure Migration from AWS to a Cost-Optimized Private Cloud

Client

Challenge

Solution

1. Audit & Planning

2. Infrastructure Preparation

3. Data Migration

4. Production Cutover

Technologies

Results

Migration and DevOps for a CS-Cart Marketplace

Infrastructure and Deployment of a Multi-Vendor CS-Cart Marketplace

Client

Challenge

Solution

1. Infrastructure in Yandex Cloud (Terraform)

2. Containerization and Microservices

3. Marketplace Platform (CS-Cart)

4. Automation and n8n

5. Security and Cloudflare

6. On-Premise Infrastructure and Documentation

7. Project Archival and Repositories

Technologies

Results