Hermes
ff81d99021
Backend: - src/monitoring/disk-space-monitor.js: monitors Docker disk usage against user-configured budget, auto-cleans at thresholds, breaks down by category - routes/disk-space.js: GET /disk, GET /disk/breakdown, POST /disk/config, POST /disk/cleanup endpoints - src/app.js: wire DiskSpaceMonitor into startup, 10-min check interval - All 1539 tests pass Product Vision (PRODUCT-VISION.md): - DashCaddy is a self-hosting platform, not just a dashboard - Core value: 'Self-host anything in 30 seconds' - Three pillars: One-click deploy, zero-config networking, self-healing infra - vs Portainer/CasaOS/Yunohost positioning New backlog tasks (P5 tier, DC-101–108): - Disk budget, one-click deploy with auto Caddyfile+DNS, container auto-discovery, app catalog, smart wizard, visual Caddy builder, disaster recovery, multi-host fleet management 47 total backlog tasks, ~110 hr of work, cron running every 2h.
66 lines
2.4 KiB
Bash
66 lines
2.4 KiB
Bash
#!/bin/bash
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# DashCaddy Docker Space Management
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# Runs via cron to keep Docker disk usage under control
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# Prevents the overlay2 + dangling volumes + stale images that fill the disk
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set -euo pipefail
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MAX_DISK_PCT=85 # Alert if disk usage exceeds this
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LOG_PREFIX="[dc-disk]"
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# 1. Remove dangling (untagged) images
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echo "$LOG_PREFIX Pruning dangling images..."
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docker image prune -f --filter "dangling=true" 2>/dev/null || true
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# 2. Remove unused volumes (volumes not attached to any container)
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echo "$LOG_PREFIX Pruning unused volumes..."
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docker volume prune -f 2>/dev/null || true
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# 3. Remove old build cache
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echo "$LOG_PREFIX Pruning build cache..."
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docker builder prune -f --keep-storage 500m 2>/dev/null || true
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# 4. Remove stopped containers older than 7 days
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echo "$LOG_PREFIX Pruning old stopped containers..."
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docker container prune -f --filter "until=168h" 2>/dev/null || true
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# 5. Remove images not used by any container (keep only running images)
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# Only remove images older than 7 days to avoid breaking recent updates
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echo "$LOG_PREFIX Pruning unused images (>7 days old)..."
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docker image prune -a -f --filter "until=168h" --filter "dangling=false" 2>/dev/null || true
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# 6. Truncate container log files that are bigger than 100MB
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echo "$LOG_PREFIX Checking container logs..."
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for logfile in /var/lib/docker/containers/*/*-json.log; do
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if [ -f "$logfile" ]; then
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size=$(stat -c%s "$logfile" 2>/dev/null || echo 0)
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if [ "$size" -gt 104857600 ]; then # 100MB
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echo "$LOG_PREFIX Truncating $(basename $logfile) ($(( size / 1048576 ))MB)"
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truncate -s 0 "$logfile"
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fi
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fi
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done
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# 7. Vacuum journald logs to 200MB
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echo "$LOG_PREFIX Vacuuming journal logs..."
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journalctl --vacuum-size=200M 2>/dev/null || true
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# 8. Clear pip/npm caches that grow over time
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echo "$LOG_PREFIX Clearing stale caches..."
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rm -rf /root/.cache/pip/cache/html 2>/dev/null || true
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rm -rf /root/.cache/npm/_cacache 2>/dev/null || true
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# 9. Report disk usage
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USAGE=$(df / | tail -1 | awk '{print $5}' | tr -d '%')
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FREE_GB=$(df -h / | tail -1 | awk '{print $4}')
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echo "$LOG_PREFIX Disk usage: ${USAGE}% (${FREE_GB} free)"
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if [ "$USAGE" -gt "$MAX_DISK_PCT" ]; then
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echo "$LOG_PREFIX WARNING: Disk usage above ${MAX_DISK_PCT}%!"
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# More aggressive: remove ALL images not used by running containers
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echo "$LOG_PREFIX Aggressive prune: removing all unused images..."
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docker image prune -a -f 2>/dev/null || true
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fi
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echo "$LOG_PREFIX Done."
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