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Kompletne odstraneno: - Emoji (smajliky, symboly, boxes, arrows) z README - Emoji ze skriptu (sipky, symboly) - Emoji z docker-compose (adresare) Nahrano za: - Textove alternativy (sipky -> '->', boxes -> '+', atd.) - ASCII pouze kde to slo Ciste vsechny 7 repo (overeno Python skriptem).
203 lines
5.6 KiB
Bash
203 lines
5.6 KiB
Bash
#!/usr/bin/env bash
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#
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# docker-backup.sh -- bezpečná záloha Docker projektů a named volumes
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#
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# - vytvoří timestamp složku v <backup-root>/
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# - pro každý projekt v <docker-projects-root> zastaví kontejnery,
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# zálohuje tar.zst, ověří integritu, znovu spustí
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# - zvlášť zálohuje Docker named volumes
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# - ponechá posledních N záloh (default 3)
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#
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# Použití:
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# ./docker-backup.sh # všechny projekty + named volumes
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# ./docker-backup.sh nginx mattermost # vybrané projekty (volumes vždy)
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# BACKUP_KEEP=7 ./docker-backup.sh # ponechá 7 záloh
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# ./docker-backup.sh --help # nápověda
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#
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set -euo pipefail
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usage() {
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sed -n '2,15p' "$0" | sed 's/^# \{0,1\}//'
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}
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for arg in "$@"; do
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case "$arg" in
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--help|-h) usage; exit 0 ;;
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esac
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done
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DOCKERY="${DOCKERY:-<docker-projects-root>}"
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BACKUP_ROOT="${BACKUP_ROOT:-<backup-root>}"
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KEEP="${BACKUP_KEEP:-3}"
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TS="$(date +%Y-%m-%d_%H-%M-%S)"
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DEST="${BACKUP_ROOT}/${TS}"
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# Barevné výstupy
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if [ -t 1 ]; then
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RED='\033[0;31m'; GREEN='\033[0;32m'; YELLOW='\033[1;33m'; NC='\033[0m'
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else
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RED=''; GREEN=''; YELLOW=''; NC=''
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fi
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log() { printf '%s[%s]%s %s\n' "$GREEN" "$(date '+%H:%M:%S')" "$NC" "$*"; }
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warn() { printf '%s[%s]%s %s\n' "$YELLOW" "$(date '+%H:%M:%S')" "$NC" "$*"; }
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err() { printf '%s[%s]%s %s\n' "$RED" "$(date '+%H:%M:%S')" "$NC" "$*"; }
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# Kontrola
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if ! docker info >/dev/null 2>&1; then
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err "Docker není dostupný."
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exit 1
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fi
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if [ ! -d "$DOCKERY" ]; then
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err "Dockery adresář neexistuje: $DOCKERY"
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exit 1
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fi
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if [ ! -d "$BACKUP_ROOT" ]; then
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err "Backup adresář neexistuje: $BACKUP_ROOT"
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exit 1
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fi
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mkdir -p "$DEST"
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# Najdi projekty
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if [ "$#" -gt 0 ]; then
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PROJECTS=("$@")
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else
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PROJECTS=()
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for d in "$DOCKERY"/*/; do
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[ -d "$d" ] || continue
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if compgen -G "$d/docker-compose.y*ml" > /dev/null; then
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PROJECTS+=("$(basename "$d")")
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fi
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done
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fi
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log "Projektů k záloze: ${#PROJECTS[@]}"
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log "Cíl: $DEST"
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log "Uchovat posledních: $KEEP záloh"
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# === FÁZE 1: zastavit všechny dotčené kontejnery najednou ===
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log ""
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log "=== STOP: zastavuji všechny kontejnery v ${PROJECTS[*]} ==="
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for project in "${PROJECTS[@]}"; do
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cd "$DOCKERY/$project"
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if [ -f docker-compose.yml ] || [ -f docker-compose.yaml ]; then
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if docker compose ps -q 2>/dev/null | grep -q .; then
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log " [$project] docker compose stop"
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docker compose stop 2>&1 || true
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fi
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fi
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done
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# === FÁZE 2: záloha projektů (paralelně pro velké projekty) ===
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log ""
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log "=== BACKUP projekty (tar.zst) ==="
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FAILED=()
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for project in "${PROJECTS[@]}"; do
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cd "$DOCKERY/$project"
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ARCHIVE="$DEST/${project}.tar.zst"
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log " [$project] tar -c <docker-projects-root>/$project/ -> $ARCHIVE"
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# absolutní cesta (background tar pitfall: vždy absolutní)
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if /usr/bin/tar --exclude='._*' --exclude='.DS_Store' \
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--use-compress-program='/opt/homebrew/bin/zstd -1 -T0' \
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-cf "$ARCHIVE" \
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"<docker-projects-root>/$project/" 2>>"$DEST/.errors"; then
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# Ověření
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if /opt/homebrew/bin/zstd -t "$ARCHIVE" >/dev/null 2>&1; then
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SIZE=$(stat -f '%z' "$ARCHIVE")
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log " OK ($(numfmt --to=iec --suffix=B "$SIZE" 2>/dev/null || echo "$SIZE B"))"
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else
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err " zstd -t selhal pro $ARCHIVE"
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FAILED+=("$project")
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fi
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else
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err " tar selhal pro $project"
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FAILED+=("$project")
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fi
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done
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# === FÁZE 3: named volumes (per-volume záloha přes Docker) ===
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log ""
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log "=== BACKUP named volumes ==="
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VOLUMES=$(docker volume ls --format '{{.Name}}' \
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| grep -vE '^(host-services|docker-desktop)$' || true)
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for vol in $VOLUMES; do
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ARCHIVE="$DEST/${vol}.tar.zst"
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log " [volume:$vol] -> $ARCHIVE"
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# Nejdřív dekomprimuj na hostiteli, pak pošli do kontejneru (alpine tar neumí zstd)
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if docker run --rm \
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-v "${vol}:/src:ro" \
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-v "$DEST:/dest" \
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alpine:3.20 \
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sh -c "cd /src && tar --exclude='._*' --exclude='.DS_Store' -cf - ." \
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> "$DEST/${vol}.tar" 2>>"$DEST/.errors"; then
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/opt/homebrew/bin/zstd -1 -T0 -f "$DEST/${vol}.tar" -o "$ARCHIVE" 2>>"$DEST/.errors"
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rm -f "$DEST/${vol}.tar"
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if /opt/homebrew/bin/zstd -t "$ARCHIVE" >/dev/null 2>&1; then
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SIZE=$(stat -f '%z' "$ARCHIVE")
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log " OK ($(numfmt --to=iec --suffix=B "$SIZE" 2>/dev/null || echo "$SIZE B"))"
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else
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err " zstd -t selhal pro $ARCHIVE"
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FAILED+=("volume:$vol")
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fi
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else
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err " docker run selhal pro volume $vol"
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FAILED+=("volume:$vol")
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fi
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done
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# === FÁZE 4: znovu spustit projekty ===
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log ""
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log "=== UP: spouštím projekty ==="
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for project in "${PROJECTS[@]}"; do
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cd "$DOCKERY/$project"
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if [ -f docker-compose.yml ] || [ -f docker-compose.yaml ]; then
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log " [$project] docker compose up -d"
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docker compose up -d 2>&1 || warn " [$project] up -d selhal (zkontroluj)"
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fi
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done
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# === FÁZE 5: hash report ===
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log ""
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log "=== SHA-256 hashe ==="
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for f in "$DEST"/*.tar.zst; do
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[ -f "$f" ] || continue
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H=$(shasum -a 256 "$f" | awk '{print $1}')
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S=$(stat -f '%z' "$f")
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log " $(basename "$f") sha256=$H size=$S"
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done
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# === FÁZE 6: retention ===
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log ""
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log "=== RETENTION: ponechávám posledních $KEEP záloh ==="
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# set -u a prázdné pole
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existing=()
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while IFS= read -r d; do
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[ -d "$d" ] && existing+=("$d")
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done < <(find "$BACKUP_ROOT" -maxdepth 1 -mindepth 1 -type d | sort)
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# Pokud něco selhalo, nepromazávej
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if [ "${#FAILED[@]}" -gt 0 ]; then
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warn "Některé zálohy selhaly (${#FAILED[@]}), RETENTION se neprovádí"
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else
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if [ "${#existing[@]}" -gt "$KEEP" ]; then
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for old in "${existing[@]:0:${#existing[@]}-KEEP}"; do
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log " mažu starou zálohu: $(basename "$old")"
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rm -rf "$old"
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done
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fi
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fi
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log ""
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log "======================================"
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log " HOTOVO"
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log "======================================"
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log "Záloha: $DEST"
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if [ "${#FAILED[@]}" -gt 0 ]; then
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err "Selhalo: ${#FAILED[@]}"
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for f in "${FAILED[@]}"; do err " [FAIL] $f"; done
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exit 1
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fi
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log "Vše OK." |