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EpicNext-Cms/scripts/docker-prune.sh
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openhands 1caef76f82
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feat(ops): self-heal disk pressure instead of only alerting
The 5-minute disk probe now reclaims storage automatically: from 85% it runs the gentle age-windowed Docker prune, from 90% it drops the age windows (docker-prune.sh --force: all unused build cache and unreferenced images, all stopped containers) so a mount can never silently max out. Alerts still fire at 85/90/95% and their hint now points at non-Docker growth when reclaiming is not enough. Force mode is reserved for the worker; deploys keep the gentle mode. Volumes are off-limits in every path.
2026-09-13 13:18:00 +02:00

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#!/usr/bin/env bash
# Reclaim Docker's unused cache so host storage stays bounded.
#
# Modes:
# (default) — gentle, age-windowed (keeps rollback + rebuild speed):
# - BuildKit cache older than 72h, hard-capped at 4 GB (Debian /pnpm store
# is shared across builds; everything newer speeds up rebuilds).
# - Images referenced by NO container and older than 7 days.
# - Containers stopped for more than 24h.
# --force — emergency mode ("never let the disk max out"): drops every age
# window and reclaims all unused bytes Docker can free:
# - ALL unreferenced build cache,
# - ALL unreferenced images (no 7-day grace),
# - ALL stopped containers.
# Trade-off: waiting rebuilds re-fetch deps/images later.
#
# Volumes are NEVER pruned in either mode: mariadb-turbo-data is a database.
# Idempotent; exits 0 when Docker is unavailable.
set -Eeuo pipefail
DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
LOG_DIR="${LOG_DIR:-$DIR/logs}"
mkdir -p "$LOG_DIR"
LOG_FILE="$LOG_DIR/docker-prune.log"
now() { date '+%Y-%m-%d %H:%M:%S'; }
FORCE=0
if [[ "${1:-}" == "--force" ]]; then
FORCE=1
fi
command -v docker >/dev/null 2>&1 || {
printf '[%s] docker CLI unavailable; nothing to prune\n' "$(now)" >>"$LOG_FILE"
exit 0
}
printf '\n[%s] === docker prune start%s ===\n' "$(now)" "$( (( FORCE )) && printf ' (FORCE)' )" >>"$LOG_FILE"
docker system df >>"$LOG_FILE" 2>&1 || true
if (( FORCE )); then
docker builder prune -af >>"$LOG_FILE" 2>&1 || true
docker image prune -af >>"$LOG_FILE" 2>&1 || true
docker container prune -f >>"$LOG_FILE" 2>&1 || true
else
docker builder prune -af --filter "until=72h" --max-used-space=4g >>"$LOG_FILE" 2>&1 || true
docker image prune -af --filter "until=168h" >>"$LOG_FILE" 2>&1 || true
docker container prune -f --filter "until=24h" >>"$LOG_FILE" 2>&1 || true
fi
printf '\n[%s] === docker prune complete%s ===\n' "$(now)" "$( (( FORCE )) && printf ' (FORCE)' )" >>"$LOG_FILE"
docker system df >>"$LOG_FILE" 2>&1 || true