GLYPH OVH PRECHECK v1

Status: PRE-HTTP SAFETY CHECK

Required before HTTP/API:

RAM:

• free -h
• available should be >= 100G

SWAP:

• swapon --show
• production preference: swap disabled or explicitly accepted

DISK:

• df -h /
• df -h /tmp
• required free space:

  • 100G for 4GB rebuild

  • 300G for 16GB rebuild

PORT:

• ss -ltnp | grep 18080
• expected before start: empty
• expected after start: 127.0.0.1:18080 only

BIND:

• FastAPI must bind only to 127.0.0.1
• never bind 0.0.0.0 directly

RUNTIME SAFETY:

• one uvicorn worker initially
• lock around router stdin/stdout
• timeout required
• /health endpoint required
• graceful shutdown required
• logs required

SYSTEMD:

• MemoryMax=100G required for service mode
• Restart=on-failure

WARMUP:

• optional: vmtouch -t out_4gb/sa.bin
• do not assume vmtouch exists

DO NOT USE:

• raw http.server prototype
• public bind without nginx/auth
• multiple uvicorn workers sharing one stdin router