67 lines
2.5 KiB
Bash
Executable file
67 lines
2.5 KiB
Bash
Executable file
#!/bin/bash
|
|
SCRIPT_ABS_LOCATION=$(realpath "$(dirname "${0}")")
|
|
|
|
source $SCRIPT_ABS_LOCATION/duplicati-backup.env
|
|
source $SCRIPT_ABS_LOCATION/../logger.sh
|
|
|
|
# Container Name
|
|
CONTAINER="duplicati"
|
|
|
|
SOURCE_DIR="/mnt/data/duplicati"
|
|
SSH_DESTINATION="$SSH_DESTINATION"
|
|
BACKUP_ENCR_PASSPHRASE="$BACKUP_ENCR_PASSPHRASE"
|
|
|
|
# Cloud Storage Authentication
|
|
SSH_USERNAME="$SSH_USERNAME"
|
|
SSH_PASSWORD="$SSH_PASSWORD"
|
|
SSH_KEY="$SSH_KEY"
|
|
|
|
# Set default values for parameters
|
|
MAX_BACKUPS=7
|
|
BACKUP_FOLDER=""
|
|
|
|
# Log file
|
|
LOG_FILE="$SCRIPT_ABS_LOCATION/duplicati-backup.log"
|
|
|
|
# Override default values with command-line arguments
|
|
while getopts ":f:h:u:p:m:b:" opt; do
|
|
case $opt in
|
|
f) SOURCE_DIR="$OPTARG";;
|
|
h) SSH_DESTINATION="$OPTARG";;
|
|
u) SSH_USERNAME="$OPTARG";;
|
|
p) SSH_PASSWORD="$OPTARG";;
|
|
m) MAX_BACKUPS="$OPTARG";;
|
|
b) BACKUP_FOLDER="$OPTARG";;
|
|
\?) echo "Invalid option: -$OPTARG"; exit 1;;
|
|
esac
|
|
done
|
|
|
|
# Create a temporary file for the encrypted archive
|
|
TMP_FILENAME=duplicati_db-$(date +"%Y%m%d").bak &&
|
|
TMP_FILEPATH=$SCRIPT_ABS_LOCATION || { log "Error: Failed to create a temporary file."; exit 1; }
|
|
|
|
# Create the encrypted archive using tar and openssl
|
|
log "Compressing and excrypting the Duplicati Databases"
|
|
sudo tar -czf - "$SOURCE_DIR" | openssl enc -aes-256-cbc -pbkdf2 -pass pass:$BACKUP_ENCR_PASSPHRASE > $TMP_FILEPATH/$TMP_FILENAME || { log "Error: Failed to create encrypted archive."; exit 1; }
|
|
|
|
|
|
# Connect to the backup host and count the number of existing backups
|
|
log "Fetching number of backups in destination folder"
|
|
EXISTING_BACKUPS=$(ssh $SSH_USERNAME@$SSH_DESTINATION -p 23 -i $SSH_KEY "ls" | sudo wc -l) || { log "Error: Failed to count existing backups."; exit 1; }
|
|
|
|
# Remove old backups if there are too many
|
|
if (( $EXISTING_BACKUPS > $MAX_BACKUPS )); then
|
|
log "Removing old backups in order to save space"
|
|
ssh $SSH_USERNAME@$SSH_DESTINATION -p 23 -i $SSH_KEY "ls -t $BACKUP_FOLDER | tail -n +$((MAX_BACKUPS+1)) | xargs rm" || { log "Error: Failed to remove old backups."; exit 1; }
|
|
fi
|
|
|
|
# Transfer the encrypted archive to the backup host using scp
|
|
log "Transfering archive to SSH Destination"
|
|
scp -v -P 23 -i "$SSH_KEY" "$TMP_FILEPATH/$TMP_FILENAME" "$SSH_USERNAME@$SSH_DESTINATION:$BACKUP_FOLDER$TMP_FILENAME" || { log "Error: Failed to transfer the encrypted archive."; exit 1; }
|
|
|
|
# Remove the temporary file
|
|
log "Cleaning up files"
|
|
rm "$TMP_FILEPATH/$TMP_FILENAME" || { log "Error: Failed to remove the temporary file."; exit 1; }
|
|
|
|
log "Backup completed successfully."
|