70 lines
2.2 KiB
Bash
70 lines
2.2 KiB
Bash
#!/bin/bash
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# Load environment variables from .env file
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if [ -f .env ]; then
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export $(grep -v '^#' .env | xargs)
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else
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echo ".env file not found! Please create it with the necessary configuration."
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exit 1
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fi
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# Ensure BACKUP_PATH is set
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if [ -z "$BACKUP_PATH" ]; then
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echo "BACKUP_PATH not set in .env file!"
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exit 1
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fi
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# Extract unique database prefixes (DB1, DB2, ...)
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DATABASE_PREFIXES=$(env | grep -o 'DB[0-9]*_' | sort -u)
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# Loop through each database configuration prefix
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for PREFIX in $DATABASE_PREFIXES; do
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HOST_VAR="${PREFIX}HOST"
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PORT_VAR="${PREFIX}PORT"
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USER_VAR="${PREFIX}USER"
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FORMAT_VAR="${PREFIX}DUMP_FORMAT"
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HOST=${!HOST_VAR}
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PORT=${!PORT_VAR}
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USER=${!USER_VAR}
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DUMP_FORMAT=${!FORMAT_VAR:-"custom"} # Default to "custom" if not set
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if [ -z "$HOST" ] || [ -z "$PORT" ] || [ -z "$USER" ]; then
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echo "Incomplete configuration for $PREFIX. Skipping..."
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continue
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fi
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# Create a directory for each server using host and port
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SERVER_DIR="$BACKUP_PATH/${HOST}_${PORT}"
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mkdir -p "$SERVER_DIR"
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# Get a list of all databases for this server, excluding template databases
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DATABASES=$(psql -h "$HOST" -p "$PORT" -U "$USER" -d postgres -t -c "SELECT datname FROM pg_database WHERE datistemplate = false;")
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# Loop over each database and create a backup
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for DB_NAME in $DATABASES; do
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# Set file extension based on DUMP_FORMAT
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EXTENSION="dump"
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if [[ "$DUMP_FORMAT" == "sql" ]]; then
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EXTENSION="sql.gz"
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fi
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# Set backup file path within the server-specific directory
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BACKUP_FILE="$SERVER_DIR/$DB_NAME.$EXTENSION"
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# Perform the backup based on the specified format
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if [[ "$DUMP_FORMAT" == "custom" ]]; then
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# Custom format and highest ZSTD compression level
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pg_dump -h "$HOST" -p "$PORT" -U "$USER" -Fc --compress="zstd:21" "$DB_NAME" -f "$BACKUP_FILE"
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elif [[ "$DUMP_FORMAT" == "sql" ]]; then
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# Plain-text SQL backup compressed with gzip at high compression level
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pg_dump -h "$HOST" -p "$PORT" -U "$USER" "$DB_NAME" | gzip -9 > "$BACKUP_FILE"
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else
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echo "Invalid DUMP_FORMAT for $PREFIX: $DUMP_FORMAT. Skipping..."
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continue
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fi
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echo "Backup for database '$DB_NAME' created at '$BACKUP_FILE'"
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done
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done
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