Fix Caddy Reverse Proxy 404 and 502 Errors: Upstream, Path, and Body Limits
A step-by-step guide to diagnosing and fixing 404 and 502 errors in Caddy reverse proxy setups by checking logs, upstream addresses, path stripping, and request body limits.
AIOOS FIELD GUIDE LIBRARY
Practical guides for websites, servers and deployment.
Search tested steps, decision guides and troubleshooting notes without wading through an unrelated tool directory.
- Decisions before commands
- Checks after every critical step
- Limitations and update dates kept visible
6 guides
Docker Compose Production Readiness Checklist
Before moving a working Compose project into production, check image versions, builds, ports, internal networks, persistent volumes, health checks, restarts, and rollback.
Manage Production Secrets and Environment Files Safely
Separate ordinary configuration from secrets. Choose where to store .env files and service credentials, restrict access, avoid logging secrets, and plan rotation and incident response.
Deploy on One Server with Health Checks and a Rollback Plan
Prepare and back up before release, start a candidate version, verify its health, switch traffic, observe the result, and keep a clear route back to the previous version.
What to Monitor on a Small Website Server
Start with user-visible availability, then watch application health, CPU, memory, disk, backup age, and logs. Set alerts that reflect sustained problems rather than brief spikes.
Website Operations for Beginners: Logs, Monitoring, Backup and Restore
Create a small operating routine for a first website: health checks, disk and memory monitoring, versioned backups, off-server copies and a tested restore procedure.