Krystie
503de258b8
Committed by Hermes autonomous QA sprint 2026-08-13. These files were modified during the Aug 12 sprint but never committed.
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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