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status: building

Blueprint · Cloud / Infrastructure

Personal Cloud Hosting Platform

A personal platform for deploying small apps, managing domains, environment variables, logs, and background workers.

PlannedVery HardDockerReverse ProxyCaddyTraefikLogsHealth Checks
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Overview

A smaller, personal version of Render, Fly, or Vercel for learning cloud orchestration. It should make one developer's small apps easier to deploy while exposing enough internals to teach container lifecycle, routing, logs, health checks, and secrets.

Problem

Self-hosting small apps often means wiring Docker, reverse proxies, TLS, logs, restarts, and environment variables manually. That is useful once, but repetitive once there are multiple experiments.

Core users

  • Solo developers running side projects
  • Students learning cloud orchestration
  • Builders with a VPS who want a clean dashboard
  • Developers who want to understand hosting platforms from the inside

MVP scope

  • Deploy Dockerized apps from an image or repo build output
  • Store and inject environment variables
  • View recent logs
  • Assign a generated subdomain
  • Restart a service manually
  • Run basic HTTP health checks
  • Show service status and last deployment time

Non-goals

  • Do not build a full Kubernetes replacement
  • Do not support multi-region deployments initially
  • Do not offer public multi-tenant hosting in MVP
  • Do not run privileged containers

Core system components

  • Frontend dashboard for apps, deploys, env vars, logs, domains, and health
  • Backend API for app metadata, lifecycle commands, and secret references
  • Docker host or lightweight orchestrator for container lifecycle
  • Reverse proxy like Caddy or Traefik for subdomain routing and TLS
  • Postgres metadata store
  • Log collector for container stdout/stderr
  • Health check scheduler

Suggested architecture

  • Frontend: dashboard listing apps, status, logs, env vars, and restart/deploy actions.
  • Backend: API service that validates permissions, writes desired state, and talks to the container host.
  • Runtime: Docker Engine or a lightweight orchestrator manages container create, start, stop, restart, and remove operations.
  • Proxy: Caddy or Traefik routes generated subdomains to app containers and handles TLS.
  • Database: Postgres stores app definitions, releases, env var references, health checks, and log pointers.
  • Logs: container logs are tailed into storage with retention limits.
  • Deployment: one VPS first, with dashboard/API/proxy/runtime on the same host.

Data model

  • App: id, ownerId, name, image, status, generatedHostname, createdAt
  • Release: id, appId, imageDigest, status, deployedAt, rolledBackAt
  • EnvironmentVariable: id, appId, key, encryptedValue, createdAt
  • Domain: id, appId, hostname, verifiedAt, proxyTarget
  • HealthCheck: id, appId, path, intervalSeconds, lastStatus, lastCheckedAt
  • LogLine: id, appId, releaseId, stream, message, timestamp

API design

  • POST /api/apps - create an app
  • GET /api/apps - list apps
  • POST /api/apps/:id/deploy - deploy or update an image
  • POST /api/apps/:id/restart - restart the running container
  • GET /api/apps/:id/logs - read recent log lines
  • POST /api/apps/:id/env - set encrypted environment variables
  • POST /api/apps/:id/domains - attach a domain or generated subdomain
  • GET /api/apps/:id/health - read health check history

Key technical challenges

  • Container lifecycle management
  • Reverse proxy routing and certificate automation
  • Secrets management
  • Reliable health checks
  • Resource limits and noisy-neighbor prevention
  • Rolling restarts without breaking active traffic
  • Log retention and searchable logs

Tradeoffs

  • Start with one host because it keeps the mental model concrete.
  • Use Docker directly before adding orchestrators.
  • Support generated subdomains before custom domains.
  • Make logs simple and recent before building full log search.

Security considerations

  • Use container isolation and never allow privileged containers.
  • Apply firewall rules so apps only expose traffic through the reverse proxy.
  • Encrypt environment variables at rest.
  • Set per-app CPU and memory limits.
  • Use per-app network boundaries where possible.
  • Avoid mounting host paths into user apps.

Scaling path

  • Add multiple worker hosts with a scheduler.
  • Add blue/green deployments and rollbacks.
  • Add background workers and cron jobs.
  • Add app templates and managed databases.
  • Add backup and restore flows for persistent volumes.

Observability

  • Container status, restart count, CPU, memory, and network metrics.
  • Health check history and alerting on repeated failures.
  • Proxy logs for routing failures and TLS issues.
  • Audit logs for deploys, restarts, env var changes, and domain changes.

Future features

  • Managed Postgres per app
  • Persistent volumes with backups
  • Cron jobs and background workers
  • Multi-host scheduler
  • Deploy from GitHub
  • Rollback UI