86 lines
3.4 KiB
Bash
86 lines
3.4 KiB
Bash
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#!/usr/bin/env bash
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set -euo pipefail # This ensures the script will stop execution if any command fails, and that unset variables will cause errors
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### Configuration ###
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# Setting the root directory for virtual environments
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VENV_ROOT="/home/doc"
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# Define the backup directory where backups will be stored locally
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BACKUP_DIR="$VENV_ROOT/backups"
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# Define the retention period for local backups in days. Older backups will be deleted.
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RETENTION_DAYS=7
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# Remote settings for syncing backups to a remote server
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# Define the SSH user for remote access
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REMOTE_USER="root"
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# Define the remote host (the server where backups will be stored)
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REMOTE_HOST="thevault.bounceme.net"
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# Define the path on the remote server where the backups will be stored
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REMOTE_PATH="/mnt/backup3/pythonvenvs"
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### Derived ###
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# Generate a timestamp based on the current date and time to create unique backup file names
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DATE=$(date +'%F_%H-%M-%S')
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# Define the full path of the backup file to be created locally
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BACKUP_FILE="$BACKUP_DIR/venvs_backup_$DATE.tar.gz"
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# Ensure that the backup directory exists, and create it if it does not
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mkdir -p "$BACKUP_DIR"
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# 1) Find all virtual environments in the specified root directory
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# We are searching for directories under $VENV_ROOT that contain a 'bin/activate' file
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# This file is typically present in Python virtual environments
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mapfile -t VENV_DIRS < <(
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find "$VENV_ROOT" -maxdepth 1 -type d \
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-exec test -f "{}/bin/activate" \; -print
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)
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# If no virtual environments are found, print an error and exit the script
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if [ ${#VENV_DIRS[@]} -eq 0 ]; then
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echo "❌ No virtual environments found under $VENV_ROOT"
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exit 1
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fi
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# 2) Extract the basenames of the virtual environments to use in the backup process
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VENV_NAMES=()
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for path in "${VENV_DIRS[@]}"; do
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VENV_NAMES+=( "$(basename "$path")" )
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done
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# Inform the user about which virtual environments are being backed up
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echo "🔄 Backing up virtual environments: ${VENV_NAMES[*]}"
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# Create a tarball archive of the found virtual environments
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# We use the '-C' option to change the directory to $VENV_ROOT before adding the directories
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tar czf "$BACKUP_FILE" -C "$VENV_ROOT" "${VENV_NAMES[@]}"
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# Notify the user that the local backup was saved successfully
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echo "✅ Local backup saved to $BACKUP_FILE"
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# 3) Push the backup to the remote server using rsync
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# Notify the user that the backup is being uploaded
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echo "📡 Sending backup to ${REMOTE_USER}@${REMOTE_HOST}:${REMOTE_PATH}/"
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# The rsync command synchronizes the backup file with the remote server
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# -a: Archive mode (preserves symbolic links, permissions, etc.)
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# -z: Compress file data during the transfer
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# --progress: Show progress during the transfer
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rsync -az --progress "$BACKUP_FILE" \
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"${REMOTE_USER}@${REMOTE_HOST}:${REMOTE_PATH}/"
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# Check the result of the rsync command. If it failed, print an error and exit.
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if [ $? -ne 0 ]; then
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echo "❌ Remote sync failed!"
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exit 1
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else
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echo "✅ Remote sync succeeded."
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fi
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# 4) Rotate old local backups
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# Inform the user that old backups are being deleted
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echo "🗑️ Removing local backups older than $RETENTION_DAYS days..."
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# The 'find' command searches for backup files older than the retention period and deletes them
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find "$BACKUP_DIR" -type f -name "venvs_backup_*.tar.gz" \
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-mtime +$RETENTION_DAYS -delete
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# Notify the user that the backup and cleanup process is complete
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echo "🎉 Backup and cleanup complete."
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