Claude
55d8d09e46
- minecraft: prompt for world seed on new installs (skipped if world already exists); SEED env var wired into docker-compose.yml - disaster-backup: new service that stops each Docker service, snapshots the full ~/docker/<service>/ directory (config + data + databases), then restarts it — multi-destination support so different services can go to different drives/repos; one restore_kopia_backup.sh per destination - README: update backup row to list both backup and disaster-backup https://claude.ai/code/session_019XgsQ13XKm4Zj3cNsDNwHj
492 lines
22 KiB
Bash
492 lines
22 KiB
Bash
#!/bin/bash
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# services/disaster-backup.sh — Full Docker-service disaster-recovery backups.
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# Part of the modular post-install system (sourced by setup.sh).
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#
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# Backs up entire ~/docker/<service>/ directories (stop → snapshot → start)
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# with Kopia. Different services can go to different drives / Kopia repos.
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#
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# Creates: ~/docker/disaster-backup/
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# disaster-backup.conf settings + per-service destination map
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# disaster-backup.sh worker (run directly or via systemd timer)
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# restore/<dest>/ restore_kopia_backup.sh + backup.conf per destination
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#
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# Complementary to the 'backup' service (gaming saves). This one is the
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# comprehensive "restore entire service from scratch" solution.
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register_service disaster-backup backup "Disaster-recovery backup (full ~/docker service dirs, stop/start)"
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install_disaster_backup() {
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require_docker || return 1
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local DIR="$DOCKER_DIR/disaster-backup"
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local CONF_FILE="$DIR/disaster-backup.conf"
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local WORKER="$DIR/disaster-backup.sh"
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local RESTORE_DIR="$DIR/restore"
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local RESTORE_SRC="${HERE:-}/extras/restore_kopia_backup.sh"
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local SVC_NAME="post-install-disaster-backup"
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echo ""
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echo "╔═══════════════════════════════════════════════════════╗"
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echo "║ Disaster-Recovery Backup Setup ║"
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echo "║ Full ~/docker/<service>/ snapshots via Kopia ║"
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echo "╚═══════════════════════════════════════════════════════╝"
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echo ""
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echo " Backs up each entire service directory — config, data, databases,"
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echo " compose files, everything needed to restore a service from scratch."
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echo " Each service is stopped briefly before snapshotting, then restarted,"
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echo " ensuring consistent database state."
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echo ""
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echo " Different services can go to different drives / Kopia repos."
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echo " New services installed later are auto-detected on the next backup run."
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echo ""
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if [ "$DRY_RUN" = true ]; then
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echo "[DRY-RUN] Would discover services under $DOCKER_DIR"
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echo "[DRY-RUN] Would create $DIR with conf, worker, and restore scripts"
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echo "[DRY-RUN] Would create Kopia repo(s) at user-specified paths"
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echo "[DRY-RUN] Would install systemd timer"
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return 0
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fi
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# ── 1. Kopia ─────────────────────────────────────────────────────────────
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if ! command -v kopia >/dev/null 2>&1; then
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log_info "Installing Kopia..."
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if command -v apt-get >/dev/null 2>&1; then
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install -d -m 0755 /etc/apt/keyrings
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curl -fsSL https://kopia.io/signing-key \
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| gpg --dearmor --yes -o /etc/apt/keyrings/kopia-keyring.gpg \
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&& echo "deb [signed-by=/etc/apt/keyrings/kopia-keyring.gpg] http://packages.kopia.io/apt/ stable main" \
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> /etc/apt/sources.list.d/kopia.list \
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&& apt-get update -y && apt-get install -y kopia
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fi
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fi
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command -v kopia >/dev/null 2>&1 \
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|| { log_error "Kopia not installed. See https://kopia.io/docs/installation/"; return 1; }
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local KOPIA_BIN; KOPIA_BIN="$(command -v kopia)"
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log_success "Kopia: $("$KOPIA_BIN" --version 2>/dev/null | head -1)"
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# ── 2. Discover installed services ───────────────────────────────────────
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local -a ALL_SVCS=()
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local d svc
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for d in "$DOCKER_DIR"/*/; do
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[ -f "${d}docker-compose.yml" ] || continue
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svc="$(basename "$d")"
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[[ "$svc" == "backup" || "$svc" == "disaster-backup" ]] && continue
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ALL_SVCS+=("$svc")
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done
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if [ "${#ALL_SVCS[@]}" -eq 0 ]; then
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log_warning "No services found under $DOCKER_DIR — auto-detected on each backup run."
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else
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log_info "Services found: ${ALL_SVCS[*]}"
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fi
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# ── 3. Destinations ───────────────────────────────────────────────────────
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echo ""
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echo "═══════════════════════════════════════════════════════"
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echo " BACKUP DESTINATIONS"
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echo "═══════════════════════════════════════════════════════"
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echo ""
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echo " Each destination is a Kopia repository directory."
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echo " For best resilience: use a different drive or mount point from your data."
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echo " Destination names must be letters, numbers, and underscores only."
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echo ""
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local DEFAULT_DEST="$ACTUAL_HOME/backups/disaster-kopia"
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local _repo=""
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prompt_text " Default repository path [${DEFAULT_DEST}]:" "$DEFAULT_DEST" _repo
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_repo="${_repo/#\~/$ACTUAL_HOME}"; _repo="${_repo%/}"
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local -a DEST_NAMES_ARR=("default")
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local -A DEST_REPOS=() DEST_PASSWORDS=() DEST_CONFIGS=()
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DEST_REPOS["default"]="$_repo"
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DEST_CONFIGS["default"]="/etc/disaster-backup/default.config"
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local _extra=""
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prompt_yn " Add more destinations (for services on different drives)? (y/N):" "n" _extra
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if [[ "$_extra" =~ ^[Yy]$ ]]; then
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echo ""
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local _dn _dr
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while true; do
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prompt_text " Destination name (blank to finish):" "" _dn
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[ -z "$_dn" ] && break
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_dn="${_dn//[^a-zA-Z0-9_]/_}"
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[ "$_dn" = "default" ] && { log_warning " 'default' is reserved — use another name."; continue; }
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prompt_text " Path for '$_dn' repository:" "" _dr
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[ -z "$_dr" ] && continue
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_dr="${_dr/#\~/$ACTUAL_HOME}"; _dr="${_dr%/}"
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DEST_REPOS["$_dn"]="$_dr"
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DEST_CONFIGS["$_dn"]="/etc/disaster-backup/${_dn}.config"
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DEST_NAMES_ARR+=("$_dn")
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log_success " Destination '$_dn' → $_dr"
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done
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fi
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# ── 4. Service → destination assignment ──────────────────────────────────
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local -A SVC_DEST_MAP=()
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if [ "${#ALL_SVCS[@]}" -gt 0 ] && [ "${#DEST_NAMES_ARR[@]}" -gt 1 ]; then
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echo ""
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echo "═══════════════════════════════════════════════════════"
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echo " ASSIGN SERVICES TO DESTINATIONS"
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echo "═══════════════════════════════════════════════════════"
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echo ""
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echo " Destinations:"
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local dn
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for dn in "${DEST_NAMES_ARR[@]}"; do
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printf " %-16s %s\n" "$dn" "${DEST_REPOS[$dn]}"
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done
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echo ""
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echo " Press Enter to accept the default for each service."
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echo ""
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local _d
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for svc in "${ALL_SVCS[@]}"; do
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prompt_text " $svc [default]:" "default" _d
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if [ -n "$_d" ] && [ "$_d" != "default" ] && [ -n "${DEST_REPOS[$_d]:-}" ]; then
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SVC_DEST_MAP["$svc"]="$_d"
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fi
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done
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fi
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# ── 5. Passwords ─────────────────────────────────────────────────────────
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echo ""
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log_info "Setting repository passwords (stored in disaster-backup.conf, chmod 600)..."
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for dn in "${DEST_NAMES_ARR[@]}"; do
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local pw=""
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if [ "$UNATTENDED" = true ]; then
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pw="$(generate_password 32)"
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else
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read -rsp " Password for '$dn' [Enter = auto-generate]: " pw; echo
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fi
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[ -z "$pw" ] && pw="$(generate_password 32)" && log_info " Auto-generated password for '$dn'."
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DEST_PASSWORDS["$dn"]="$pw"
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done
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# ── 6. Schedule ───────────────────────────────────────────────────────────
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echo ""
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echo "═══════════════════════════════════════════════════════"
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echo " SCHEDULE & RETENTION"
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echo "═══════════════════════════════════════════════════════"
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echo ""
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echo " Services are stopped briefly per snapshot — schedule for off-peak hours."
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echo ""
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echo " 1) Daily at 02:00 (recommended)"
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echo " 2) Every 12 hours"
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echo " 3) Weekly (Sunday 02:00)"
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echo " 4) Custom (systemd OnCalendar)"
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echo ""
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local _sch=""
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prompt_text " How often? [1]:" "1" _sch
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local ONCALENDAR SCHED_LABEL
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case "${_sch:-1}" in
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2) ONCALENDAR="*-*-* 02,14:00:00"; SCHED_LABEL="every 12 hours" ;;
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3) ONCALENDAR="Sun *-*-* 02:00:00"; SCHED_LABEL="weekly Sunday 02:00" ;;
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4) prompt_text " OnCalendar expression:" "*-*-* 02:00:00" ONCALENDAR; SCHED_LABEL="$ONCALENDAR" ;;
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*) ONCALENDAR="*-*-* 02:00:00"; SCHED_LABEL="daily at 02:00" ;;
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esac
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local KEEP_LATEST=""
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prompt_text " Snapshots to keep (latest)? [7]:" "7" KEEP_LATEST
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KEEP_LATEST="${KEEP_LATEST:-7}"
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# ── 7. Create dirs + init Kopia repos ────────────────────────────────────
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mkdir -p "$DIR" "$RESTORE_DIR"
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ensure_docker_dir_ownership "$DIR"
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local repo pw cfg
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for dn in "${DEST_NAMES_ARR[@]}"; do
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repo="${DEST_REPOS[$dn]}"
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pw="${DEST_PASSWORDS[$dn]}"
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cfg="${DEST_CONFIGS[$dn]}"
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mkdir -p "$repo" "$(dirname "$cfg")" /var/cache/disaster-backup
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kp_d() { env KOPIA_PASSWORD="$pw" "$KOPIA_BIN" --config-file="$cfg" "$@"; }
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if kp_d repository status >/dev/null 2>&1; then
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log_success "Connected to existing repo '$dn'."
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elif test -e "$repo/kopia.repository.f"; then
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log_info "Connecting to existing repo '$dn' at $repo ..."
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kp_d repository connect filesystem --path="$repo" \
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--cache-directory=/var/cache/disaster-backup \
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|| { log_error "Failed to connect to '$dn' repo."; return 1; }
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else
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log_info "Creating repo '$dn' at $repo ..."
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kp_d repository create filesystem --path="$repo" \
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--cache-directory=/var/cache/disaster-backup \
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|| { log_error "Failed to create '$dn' repo."; return 1; }
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fi
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kp_d policy set --global --compression=zstd \
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--keep-latest="$KEEP_LATEST" \
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--keep-daily=7 --keep-weekly=4 --keep-monthly=3 \
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--keep-annual=0 --keep-hourly=0 >/dev/null
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log_success "Repo '$dn' ready at $repo"
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done
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unset -f kp_d
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# ── 8. Write disaster-backup.conf ────────────────────────────────────────
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log_info "Writing $CONF_FILE ..."
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{
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echo "# ── disaster-backup.conf ───────────────────────────────────────────────────"
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echo "# Generated $(date '+%F %T'). Safe to hand-edit."
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echo "# Worker : sudo $WORKER"
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echo "# Restore: sudo $RESTORE_DIR/<dest>/restore_kopia_backup.sh"
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echo ""
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echo "KOPIA=\"$KOPIA_BIN\""
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echo ""
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echo "# Space-separated list of destination names (defines iteration order)."
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echo "DEST_NAMES=\"${DEST_NAMES_ARR[*]}\""
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echo "DEST_DEFAULT=\"default\""
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echo ""
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for dn in "${DEST_NAMES_ARR[@]}"; do
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echo "# ── destination: $dn"
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echo "DEST_${dn}_REPO=\"${DEST_REPOS[$dn]}\""
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echo "DEST_${dn}_CONFIG=\"${DEST_CONFIGS[$dn]}\""
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printf "DEST_%s_PASSWORD='%s'\n" "$dn" "${DEST_PASSWORDS[$dn]}"
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echo ""
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done
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echo "# ── Service → destination map ───────────────────────────────────────────────"
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echo "# Format: SVC_<name>=<dest_name> (hyphens in service names become underscores)"
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echo "# Omit a service (or comment it out) to use DEST_DEFAULT."
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for svc in "${ALL_SVCS[@]}"; do
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local svc_var="${svc//-/_}"
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local dest_val="${SVC_DEST_MAP[$svc]:-}"
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if [ -n "$dest_val" ]; then
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echo "SVC_${svc_var}=\"${dest_val}\""
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else
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echo "# SVC_${svc_var}=\"default\""
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fi
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done
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echo ""
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echo "# ── Optional offsite mirror ─────────────────────────────────────────────────"
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echo "# Mirror ALL repos offsite after each run (see kopia repository sync-to --help)."
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echo "# Example SFTP: REMOTE_TYPE=sftp REMOTE_ARGS=\"--host H --username U --path /srv/...\""
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echo "REMOTE_TYPE=\"none\""
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echo "REMOTE_ARGS=\"\""
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} > "$CONF_FILE"
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chown root:root "$CONF_FILE" 2>/dev/null || true
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chmod 600 "$CONF_FILE"
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log_success "disaster-backup.conf written (chmod 600)"
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# ── 9. Generate worker script ─────────────────────────────────────────────
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log_info "Writing worker $WORKER ..."
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cat > "$WORKER" << 'WORKEREOF'
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#!/bin/bash
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# Generated by the disaster-backup installer.
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# Backs up full ~/docker/<service>/ directories via Kopia (stop → snap → start).
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#
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# sudo ./disaster-backup.sh run a full backup cycle
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# sudo ./disaster-backup.sh snapshots list all snapshots (all repos)
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# sudo ./disaster-backup.sh policy show retention policies
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#
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# Reads disaster-backup.conf from the same directory.
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set -uo pipefail
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HERE="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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CONF="${DISASTER_BACKUP_CONF:-$HERE/disaster-backup.conf}"
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[ -f "$CONF" ] || { echo "Config not found: $CONF (re-run the disaster-backup service)"; exit 1; }
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# shellcheck source=/dev/null
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source "$CONF"
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ACTUAL_USER="${SUDO_USER:-${USER:-$(id -un)}}"
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ACTUAL_HOME="$(getent passwd "$ACTUAL_USER" 2>/dev/null | cut -d: -f6 || echo "/home/$ACTUAL_USER")"
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DOCKER_DIR="$ACTUAL_HOME/docker"
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log() { echo "[$(date '+%F %T')] $*"; }
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kp_for() {
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local dest="$1"; shift
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local cfg_var="DEST_${dest}_CONFIG" pw_var="DEST_${dest}_PASSWORD"
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local cfg="${!cfg_var:-}" pw="${!pw_var:-}"
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[ -n "$cfg" ] || { log "Unknown destination: $dest"; return 1; }
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env KOPIA_PASSWORD="$pw" "$KOPIA" --config-file="$cfg" "$@"
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}
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dest_for_svc() {
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local var="SVC_${1//-/_}"
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echo "${!var:-${DEST_DEFAULT:-default}}"
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}
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case "${1:-run}" in
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snapshots)
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for dest in ${DEST_NAMES:-default}; do
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echo ""; echo "── dest: $dest ──"
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kp_for "$dest" snapshot list 2>/dev/null || true
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done
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exit 0 ;;
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policy)
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for dest in ${DEST_NAMES:-default}; do
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echo ""; echo "── dest: $dest ──"
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kp_for "$dest" policy show --global 2>/dev/null || true
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done
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exit 0 ;;
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esac
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log "===== Disaster backup starting ====="
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rc=0
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for svc_dir in "$DOCKER_DIR"/*/; do
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[ -f "${svc_dir}docker-compose.yml" ] || continue
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svc="$(basename "$svc_dir")"
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[[ "$svc" == "backup" || "$svc" == "disaster-backup" ]] && continue
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dest="$(dest_for_svc "$svc")"
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_repo_var="DEST_${dest}_REPO"
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[ -n "${!_repo_var:-}" ] || { log "SKIP $svc — dest '$dest' not configured in conf"; continue; }
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STOPPED=false
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if docker ps --format '{{.Names}}' 2>/dev/null | grep -qx "$svc"; then
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log "Stopping $svc..."
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docker compose -f "${svc_dir}docker-compose.yml" down 2>/dev/null \
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|| docker stop "$svc" 2>/dev/null \
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|| log "WARNING: could not stop $svc — snapshotting live (consistency not guaranteed)"
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STOPPED=true
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fi
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log "Snapshotting $svc (dest: $dest)..."
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if kp_for "$dest" snapshot create --description="disaster: $svc" "$svc_dir"; then
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log "OK $svc"
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else
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log "WARNING: snapshot failed for $svc"; rc=1
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fi
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if [ "$STOPPED" = true ]; then
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log "Starting $svc..."
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docker compose -f "${svc_dir}docker-compose.yml" up -d 2>/dev/null \
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|| log "WARNING: could not restart $svc — start it manually: docker compose -f ${svc_dir}docker-compose.yml up -d"
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fi
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done
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if [ "${REMOTE_TYPE:-none}" != "none" ] && [ -n "${REMOTE_TYPE:-}" ]; then
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for dest in ${DEST_NAMES:-default}; do
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log "Mirroring '$dest' offsite ($REMOTE_TYPE)..."
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# shellcheck disable=SC2086
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kp_for "$dest" repository sync-to "$REMOTE_TYPE" $REMOTE_ARGS \
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|| { log "WARNING: mirror failed for '$dest'"; rc=1; }
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done
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fi
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if [ "$rc" -eq 0 ]; then
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log "===== Disaster backup complete ====="
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else
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log "===== Disaster backup finished WITH WARNINGS (see above) ====="
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fi
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exit "$rc"
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WORKEREOF
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chmod +x "$WORKER"
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chown root:root "$WORKER" 2>/dev/null || true
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log_success "disaster-backup.sh written"
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# ── 10. Restore scripts (one per destination) ────────────────────────────
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if [ -f "$RESTORE_SRC" ]; then
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for dn in "${DEST_NAMES_ARR[@]}"; do
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local dest_rdir="$RESTORE_DIR/$dn"
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mkdir -p "$dest_rdir"
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cp "$RESTORE_SRC" "$dest_rdir/restore_kopia_backup.sh"
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chmod +x "$dest_rdir/restore_kopia_backup.sh"
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{
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echo "# backup.conf for disaster-backup destination '$dn'"
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echo "# Read by restore_kopia_backup.sh in this directory."
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echo "KOPIA=\"$KOPIA_BIN\""
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echo "KOPIA_CONFIG=\"${DEST_CONFIGS[$dn]}\""
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printf "KOPIA_PASSWORD='%s'\n" "${DEST_PASSWORDS[$dn]}"
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} > "$dest_rdir/backup.conf"
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chown root:root "$dest_rdir/backup.conf" 2>/dev/null || true
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chmod 600 "$dest_rdir/backup.conf"
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log_success "restore/$dn/ ready"
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done
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else
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log_warning "extras/restore_kopia_backup.sh not found — restore scripts not installed"
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log_warning "Copy it manually: cp extras/restore_kopia_backup.sh $RESTORE_DIR/<dest>/"
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fi
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# ── 11. Systemd timer ────────────────────────────────────────────────────
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log_info "Installing systemd timer ($SCHED_LABEL)..."
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local AUTORUN=""
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if command -v systemctl >/dev/null 2>&1 && [ -d /run/systemd/system ]; then
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tee "/etc/systemd/system/${SVC_NAME}.service" >/dev/null << SVCEOF
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[Unit]
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Description=Post-install disaster-recovery backup (full Docker service directories)
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After=docker.service network-online.target
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Wants=docker.service
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|
|
[Service]
|
|
Type=oneshot
|
|
ExecStart=/bin/bash $WORKER run
|
|
SVCEOF
|
|
|
|
tee "/etc/systemd/system/${SVC_NAME}.timer" >/dev/null << SVCEOF
|
|
[Unit]
|
|
Description=Schedule disaster-recovery backup ($SCHED_LABEL)
|
|
|
|
[Timer]
|
|
OnCalendar=$ONCALENDAR
|
|
Persistent=true
|
|
RandomizedDelaySec=300
|
|
|
|
[Install]
|
|
WantedBy=timers.target
|
|
SVCEOF
|
|
|
|
systemctl daemon-reload
|
|
systemctl enable --now "${SVC_NAME}.timer"
|
|
log_success "Timer enabled: $SCHED_LABEL"
|
|
AUTORUN="systemctl list-timers ${SVC_NAME}.timer"
|
|
else
|
|
log_warning "systemd not detected — installing cron fallback."
|
|
local CRON
|
|
case "${_sch:-1}" in
|
|
2) CRON="0 2,14 * * *" ;;
|
|
3) CRON="0 2 * * 0" ;;
|
|
*) CRON="0 2 * * *" ;;
|
|
esac
|
|
echo "$CRON root /bin/bash $WORKER run >> /var/log/${SVC_NAME}.log 2>&1" \
|
|
> "/etc/cron.d/${SVC_NAME}"
|
|
log_success "Cron job installed: $CRON"
|
|
AUTORUN="cat /etc/cron.d/${SVC_NAME}"
|
|
fi
|
|
|
|
# ── 12. Optional first run ────────────────────────────────────────────────
|
|
echo ""
|
|
local _now=""
|
|
prompt_yn " Run the first disaster backup now? (y/N):" "n" _now
|
|
if [[ "$_now" =~ ^[Yy]$ ]]; then
|
|
/bin/bash "$WORKER" run || log_warning "First disaster backup reported warnings — check output above."
|
|
fi
|
|
|
|
# ── Summary ───────────────────────────────────────────────────────────────
|
|
echo ""
|
|
echo "═══════════════════════════════════════════════════════"
|
|
echo " DISASTER BACKUP CONFIGURED"
|
|
echo "═══════════════════════════════════════════════════════"
|
|
echo ""
|
|
echo " Config : $CONF_FILE"
|
|
echo " Worker : $WORKER"
|
|
echo " Schedule : $SCHED_LABEL"
|
|
echo ""
|
|
echo " Destinations:"
|
|
for dn in "${DEST_NAMES_ARR[@]}"; do
|
|
printf " %-16s %s\n" "$dn" "${DEST_REPOS[$dn]}"
|
|
done
|
|
echo ""
|
|
if [ "${#ALL_SVCS[@]}" -gt 0 ]; then
|
|
echo " Services backed up: ${ALL_SVCS[*]}"
|
|
else
|
|
echo " Services: none yet — auto-discovered on each run"
|
|
fi
|
|
echo ""
|
|
echo " Commands:"
|
|
echo " sudo $WORKER back up now"
|
|
echo " sudo $WORKER snapshots list all snapshots"
|
|
echo ""
|
|
echo " Restore (per destination):"
|
|
for dn in "${DEST_NAMES_ARR[@]}"; do
|
|
echo " sudo $RESTORE_DIR/$dn/restore_kopia_backup.sh"
|
|
echo " sudo $RESTORE_DIR/$dn/restore_kopia_backup.sh --list"
|
|
done
|
|
echo ""
|
|
[ -n "$AUTORUN" ] && echo " $AUTORUN" && echo ""
|
|
log_warning "Save your passwords (in disaster-backup.conf) somewhere safe —"
|
|
log_warning "without them encrypted repos cannot be restored."
|
|
echo ""
|
|
log_success "Disaster-recovery backup configured."
|
|
}
|