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124
DVDBR.sh
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124
DVDBR.sh
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#!/bin/bash
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# Define timestamp for logs and backup filenames
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TIMESTAMP=$(date +"%Y%m%d_%H%M_%3N")
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LOGFILE="DVDBR_${TIMESTAMP}.log"
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# Function to log messages
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log() {
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echo "[$(date +"%Y-%m-%d %H:%M:%S.%3N")] $1" | tee -a "$LOGFILE"
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}
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# Check if the user is in the docker group or requires sudo
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if ! groups | grep -q '\bdocker\b'; then
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log "User is not in the docker group, requesting sudo access."
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sudo -v || { log "Failed to obtain sudo access."; exit 1; }
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SUDO_CMD="sudo"
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else
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SUDO_CMD=""
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fi
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# List available Docker volumes
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VOLUMES=$($SUDO_CMD docker volume ls --format "{{.Name}}")
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if [[ -z "$VOLUMES" ]]; then
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log "No Docker volumes found. Exiting."
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exit 1
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fi
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# Ask which volumes to backup
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log "Available Docker volumes:"
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echo "$VOLUMES"
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read -p "Enter the volume(s) to backup (space-separated): " SELECTED_VOLUMES
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# Ask if timestamp should be included in the backup file name
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read -p "Include timestamp in backup filename? [y/N]: " INCLUDE_TIMESTAMP
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# Find running containers using selected volumes
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declare -A CONTAINER_MAP
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for VOLUME in $SELECTED_VOLUMES; do
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while read -r CONTAINER_ID; do
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if [[ -n "$CONTAINER_ID" ]]; then
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CONTAINER_NAME=$($SUDO_CMD docker ps --filter "id=$CONTAINER_ID" --format "{{.Names}}")
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CONTAINER_MAP["$CONTAINER_ID"]="$CONTAINER_NAME ($CONTAINER_ID)"
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fi
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done < <($SUDO_CMD docker ps --format "{{.ID}}" --filter "volume=$VOLUME")
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done
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# Display affected containers
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if [[ "${#CONTAINER_MAP[@]}" -gt 0 ]]; then
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log "The following containers use the selected volumes and may be impacted: ${CONTAINER_MAP[*]}"
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fi
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# Ask if containers should be stopped before backup
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read -p "Do you want to stop them before backup? (recommended) [y/N]: " STOP_CONTAINERS
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# Ask for backup method
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read -p "Save locally? [y/N]: " SAVE_LOCAL
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read -p "Save to remote server via SSH? [y/N]: " SAVE_REMOTE
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# Ask for local backup path if needed
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if [[ "$SAVE_LOCAL" =~ ^[Yy]$ ]]; then
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read -p "Enter local backup directory (default: current directory): " LOCAL_PATH
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LOCAL_PATH=${LOCAL_PATH:-$(pwd)}
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mkdir -p "$LOCAL_PATH"
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fi
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# Ask for SSH details if remote backup is selected
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if [[ "$SAVE_REMOTE" =~ ^[Yy]$ ]]; then
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read -p "Enter SSH private key path (default: ~/.ssh/id_rsa): " SSH_KEY
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SSH_KEY=${SSH_KEY:-~/.ssh/id_rsa}
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read -p "Enter SSH user: " SSH_USER
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read -p "Enter SSH server hostname/IP: " SSH_HOST
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read -p "Enter remote backup directory (default: ~/BACKUP): " REMOTE_PATH
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REMOTE_PATH=${REMOTE_PATH:-~/BACKUP}
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fi
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# Ask if containers should be restarted after backup (only if they were stopped)
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if [[ "$STOP_CONTAINERS" =~ ^[Yy]$ ]]; then
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read -p "Restart stopped containers after backup? [y/N]: " RESTART_CONTAINERS
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fi
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# Summary before execution
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echo -e "\nSummary of actions:"
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echo "- Selected volumes: $SELECTED_VOLUMES"
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echo "- Containers that may be using these volumes: ${CONTAINER_MAP[*]}"
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echo "- Stop containers before backup: ${STOP_CONTAINERS}";
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echo "- Restart stopped containers after backup: ${RESTART_CONTAINERS}";
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echo "- Save locally: ${SAVE_LOCAL}"; [[ "$SAVE_LOCAL" =~ ^[Yy]$ ]] && echo " -> Path: $LOCAL_PATH"
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echo "- Save remotely: ${SAVE_REMOTE}"; [[ "$SAVE_REMOTE" =~ ^[Yy]$ ]] && echo " -> SSH: $SSH_USER@$SSH_HOST:$REMOTE_PATH"
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read -p "Proceed with backup? [y/N]: " CONFIRM
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[[ "$CONFIRM" =~ ^[Yy]$ ]] || { log "Backup cancelled."; exit 0; }
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# Stop containers if confirmed
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if [[ "$STOP_CONTAINERS" =~ ^[Yy]$ ]]; then
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for CONTAINER_ID in "${!CONTAINER_MAP[@]}"; do
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log "Stopping container: ${CONTAINER_MAP[$CONTAINER_ID]}"
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$SUDO_CMD docker stop "$CONTAINER_ID"
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done
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fi
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# Perform backup
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for VOLUME in $SELECTED_VOLUMES; do
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BACKUP_FILE="$VOLUME.tar.gz"
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[[ "$INCLUDE_TIMESTAMP" =~ ^[Yy]$ ]] && BACKUP_FILE="${VOLUME}_${TIMESTAMP}.tar.gz"
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log "Streaming $VOLUME backup directly to remote server via ssh cat"
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if ! $SUDO_CMD docker run --rm -v $VOLUME:/data:ro alpine sh -c "tar czf - -C /data ." | ssh -i "$SSH_KEY" "$SSH_USER@$SSH_HOST" "cat > $REMOTE_PATH/$BACKUP_FILE"; then
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log "⚠️ ssh cat failed, trying rsync..."
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if ! rsync -avz -e "ssh -i $SSH_KEY" "$LOCAL_PATH/$BACKUP_FILE" "$SSH_USER@$SSH_HOST:$REMOTE_PATH/"; then
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log "⚠️ rsync failed, trying SCP..."
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scp -i "$SSH_KEY" "$LOCAL_PATH/$BACKUP_FILE" "$SSH_USER@$SSH_HOST:$REMOTE_PATH/"
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fi
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fi
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done
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# Restart stopped containers if requested
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if [[ "$STOP_CONTAINERS" =~ ^[Yy]$ && "$RESTART_CONTAINERS" =~ ^[Yy]$ ]]; then
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for CONTAINER_ID in "${!CONTAINER_MAP[@]}"; do
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log "Restarting container: ${CONTAINER_MAP[$CONTAINER_ID]}"
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$SUDO_CMD docker start "$CONTAINER_ID"
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done
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fi
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log "Backup process completed successfully."
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