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dockhand/scripts/emergency/postgres/backup-db.sh
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2026-01-03 13:21:38 +01:00

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#!/bin/sh
#
# PostgreSQL: Emergency script to backup the database
# Creates a timestamped dump of the database
#
# Usage:
# docker exec -it dockhand /app/scripts/emergency/postgres/backup-db.sh [output_dir]
#
# Example:
# docker exec -it dockhand /app/scripts/emergency/postgres/backup-db.sh /app/data/backups
#
# Default output: /app/data
#
# Requires: DATABASE_URL environment variable
#
set -e
echo "========================================"
echo " Dockhand - Backup Database (PostgreSQL)"
echo "========================================"
echo ""
# Check DATABASE_URL
if [ -z "$DATABASE_URL" ]; then
echo "Error: DATABASE_URL environment variable not set"
echo ""
echo "Example: DATABASE_URL=postgres://user:pass@host:5432/dockhand"
exit 1
fi
OUTPUT_DIR="${1:-/app/data}"
# Parse DATABASE_URL
# Format: postgres://user:password@host:port/database
DB_URL="$DATABASE_URL"
DB_URL="${DB_URL#postgres://}"
DB_URL="${DB_URL#postgresql://}"
# Extract credentials
DB_USER="${DB_URL%%:*}"
DB_URL="${DB_URL#*:}"
DB_PASS="${DB_URL%%@*}"
DB_URL="${DB_URL#*@}"
DB_HOST="${DB_URL%%:*}"
DB_URL="${DB_URL#*:}"
DB_PORT="${DB_URL%%/*}"
DB_NAME="${DB_URL#*/}"
DB_NAME="${DB_NAME%%\?*}"
# Generate backup filename with timestamp
TIMESTAMP=$(date +%Y%m%d_%H%M%S)
BACKUP_FILE="$OUTPUT_DIR/dockhand_backup_$TIMESTAMP.sql"
echo "This script will create a backup of the database."
echo ""
echo "Host: $DB_HOST:$DB_PORT"
echo "Database: $DB_NAME"
echo "Backup: $BACKUP_FILE"
echo ""
printf "Continue? [y/N]: "
read CONFIRM
case "$CONFIRM" in
[yY]|[yY][eE][sS])
;;
*)
echo "Aborted."
exit 0
;;
esac
echo ""
# Create output directory if needed
mkdir -p "$OUTPUT_DIR"
echo "Creating database backup..."
# Use pg_dump to create backup
export PGPASSWORD="$DB_PASS"
if command -v pg_dump >/dev/null 2>&1; then
pg_dump -h "$DB_HOST" -p "$DB_PORT" -U "$DB_USER" -d "$DB_NAME" -F p -f "$BACKUP_FILE"
else
echo "Error: pg_dump not found"
echo "Install PostgreSQL client tools to use this script"
exit 1
fi
if [ $? -eq 0 ] && [ -f "$BACKUP_FILE" ]; then
SIZE=$(ls -lh "$BACKUP_FILE" | awk '{print $5}')
echo ""
echo "Backup created successfully!"
echo "Size: $SIZE"
echo ""
echo "To copy from Docker container to host:"
echo " docker cp dockhand:$BACKUP_FILE ./dockhand_backup_$TIMESTAMP.sql"
else
echo "Error: Failed to create backup"
exit 1
fi