Clouds

AWS → Another Cloud Migration

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

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Migration and DevOps for a CS-Cart Marketplace

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.

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