# Buggy code
def create_config(self, config_file, advanced_config=False, assume_defaults=False):
    """
    Either creates a new configuration file or overwrites an existing one. Will ask the user for input on configurable properties
    and writes them to the configuration file in ~/.rally/rally.ini.

    :param config_file:
    :param advanced_config: Whether to ask for properties that are not necessary for everyday use (on a dev machine). Default: False.
    :param assume_defaults: If True, assume the user accepted all values for which defaults are provided. Mainly intended for automatic
    configuration in CI run. Default: False.
    """
    self.prompter = Prompter(self.i, self.sec_i, self.o, assume_defaults)

    if advanced_config:
        self.o("Running advanced configuration. You can get additional help at:")
        self.o("")
        self.o("  %s" % console.format.link("%sconfiguration.html" % DOC_LINK))
        self.o("")
    else:
        self.o("Running simple configuration. Run the advanced configuration with:")
        self.o("")
        self.o("  %s configure --advanced-config" % PROGRAM_NAME)
        self.o("")

    if config_file.present:
        self.o(
            "\nWARNING: Will overwrite existing config file at [%s]\n"
            % config_file.location
        )
        self.logger.debug(
            "Detected an existing configuration file at [%s]", config_file.location
        )
    else:
        self.logger.debug(
            "Did not detect a configuration file at [%s]. Running initial configuration routine.",
            config_file.location,
        )

    root_dir = io.normalize_path(
        os.path.abspath(os.path.join(config_file.config_dir, "benchmarks"))
    )
    if advanced_config:
        root_dir = io.normalize_path(
            self._ask_property(
                "Enter the benchmark data directory", default_value=root_dir
            )
        )
    else:
        self.o("* Setting up benchmark data directory in %s" % root_dir)

    # We try to autodetect an existing ES source directory
    guess = self._guess_es_src_dir()
    if guess:
        source_dir = guess
        self.logger.debug(
            "Autodetected Elasticsearch project directory at [%s].", source_dir
        )
    else:
        default_src_dir = os.path.join(root_dir, "src", "elasticsearch")
        self.logger.debug(
            "Could not autodetect Elasticsearch project directory. Providing [%s] as default.",
            default_src_dir,
        )
        source_dir = default_src_dir

    if advanced_config:
        source_dir = io.normalize_path(
            self._ask_property(
                "Enter your Elasticsearch project directory:", default_value=source_dir
            )
        )
    if not advanced_config:
        self.o("* Setting up benchmark source directory in %s" % source_dir)
        self.o("")

    # Not everybody might have SSH access. Play safe with the default. It may be slower but this will work for everybody.
    repo_url = "https://github.com/elastic/elasticsearch.git"

    if advanced_config:
        data_store_choice = self._ask_property(
            "Where should metrics be kept?"
            "\n\n"
            "(1) In memory (simpler but less options for analysis)\n"
            "(2) Elasticsearch (requires a separate ES instance, keeps all raw samples for analysis)"
            "\n\n",
            default_value="1",
            choices=["1", "2"],
        )
        if data_store_choice == "1":
            env_name = "local"
            data_store_type = "in-memory"
            (
                data_store_host,
                data_store_port,
                data_store_secure,
                data_store_user,
                data_store_password,
            ) = "", "", "", "", ""
        else:
            data_store_type = "elasticsearch"
            (
                data_store_host,
                data_store_port,
                data_store_secure,
                data_store_user,
                data_store_password,
            ) = self._ask_data_store()

            env_name = self._ask_env_name()

        preserve_install = convert.to_bool(
            self._ask_property(
                "Do you want Rally to keep the Elasticsearch benchmark candidate "
                "installation including the index (will use several GB per trial run)?",
                default_value=False,
            )
        )
    else:
        # Does not matter for an in-memory store
        env_name = "local"
        data_store_type = "in-memory"
        (
            data_store_host,
            data_store_port,
            data_store_secure,
            data_store_user,
            data_store_password,
        ) = "", "", "", "", ""
        preserve_install = False

    config = configparser.ConfigParser()
    config["meta"] = {}
    config["meta"]["config.version"] = str(Config.CURRENT_CONFIG_VERSION)

    config["system"] = {}
    config["system"]["env.name"] = env_name

    config["node"] = {}
    config["node"]["root.dir"] = root_dir

    final_source_dir = io.normalize_path(
        os.path.abspath(os.path.join(source_dir, os.pardir))
    )
    config["node"]["src.root.dir"] = final_source_dir

    config["source"] = {}
    config["source"]["remote.repo.url"] = repo_url
    # the Elasticsearch directory is just the last path component (relative to the source root directory)
    config["source"]["elasticsearch.src.subdir"] = io.basename(source_dir)

    config["benchmarks"] = {}
    config["benchmarks"]["local.dataset.cache"] = "${node:root.dir}/data"

    config["reporting"] = {}
    config["reporting"]["datastore.type"] = data_store_type
    config["reporting"]["datastore.host"] = data_store_host
    config["reporting"]["datastore.port"] = data_store_port
    config["reporting"]["datastore.secure"] = data_store_secure
    config["reporting"]["datastore.user"] = data_store_user
    config["reporting"]["datastore.password"] = data_store_password

    config["tracks"] = {}
    config["tracks"]["default.url"] = "https://github.com/elastic/rally-tracks"

    config["teams"] = {}
    config["teams"]["default.url"] = "https://github.com/elastic/rally-teams"

    config["defaults"] = {}
    config["defaults"]["preserve_benchmark_candidate"] = str(preserve_install)

    config["distributions"] = {}
    config["distributions"]["release.cache"] = "true"

    config_file.store(config)

    self.o(
        "Configuration successfully written to %s. Happy benchmarking!"
        % config_file.location
    )
    self.o("")
    self.o("More info about Rally:")
    self.o("")
    self.o("* Type %s --help" % PROGRAM_NAME)
    self.o("* Read the documentation at %s" % console.format.link(DOC_LINK))
    self.o(
        "* Ask a question on the forum at %s"
        % console.format.link("https://discuss.elastic.co/c/elasticsearch/rally")
    )


# Traceback (esrally.config.ConfigError)
Traceback (most recent call last):
File "/usr/local/bin/esrally", line 11, in <module>
sys.exit(main())
File "/usr/local/lib/python3.6/site-packages/esrally/rally.py", line 588, in main
ensure_configuration_present(cfg, args, sub_command)
File "/usr/local/lib/python3.6/site-packages/esrally/rally.py", line 428, in ensure_configuration_present
cfg.load_config(auto_upgrade=True)
File "/usr/local/lib/python3.6/site-packages/esrally/config.py", line 206, in load_config
self.migrate_config()
File "/usr/local/lib/python3.6/site-packages/esrally/config.py", line 239, in migrate_config
migrate(self.config_file, self._stored_config_version(), Config.CURRENT_CONFIG_VERSION)
File "/usr/local/lib/python3.6/site-packages/esrally/config.py", line 588, in migrate
.format(config_file.location, PROGRAM_NAME))
esrally.config.ConfigError: ('The config file in /home/ubuntu/.rally/rally.ini is too old. Please delete it and reconfigure Rally from scratch with esrally configure.', None)

# Fixed code
def create_config(self, config_file, advanced_config=False, assume_defaults=False):
    """
    Either creates a new configuration file or overwrites an existing one. Will ask the user for input on configurable properties
    and writes them to the configuration file in ~/.rally/rally.ini.

    :param config_file:
    :param advanced_config: Whether to ask for properties that are not necessary for everyday use (on a dev machine). Default: False.
    :param assume_defaults: If True, assume the user accepted all values for which defaults are provided. Mainly intended for automatic
    configuration in CI run. Default: False.
    """
    self.prompter = Prompter(self.i, self.sec_i, self.o, assume_defaults)

    if advanced_config:
        self.o("Running advanced configuration. You can get additional help at:")
        self.o("")
        self.o("  %s" % console.format.link("%sconfiguration.html" % DOC_LINK))
        self.o("")
    else:
        self.o("Running simple configuration. Run the advanced configuration with:")
        self.o("")
        self.o("  %s configure --advanced-config" % PROGRAM_NAME)
        self.o("")

    if config_file.present:
        self.o(
            "\nWARNING: Will overwrite existing config file at [%s]\n"
            % config_file.location
        )
        self.logger.debug(
            "Detected an existing configuration file at [%s]", config_file.location
        )
    else:
        self.logger.debug(
            "Did not detect a configuration file at [%s]. Running initial configuration routine.",
            config_file.location,
        )

    root_dir = io.normalize_path(
        os.path.abspath(os.path.join(config_file.config_dir, "benchmarks"))
    )
    if advanced_config:
        root_dir = io.normalize_path(
            self._ask_property(
                "Enter the benchmark data directory", default_value=root_dir
            )
        )
    else:
        self.o("* Setting up benchmark data directory in %s" % root_dir)

    # We try to autodetect an existing ES source directory
    guess = self._guess_es_src_dir()
    if guess:
        source_dir = guess
        self.logger.debug(
            "Autodetected Elasticsearch project directory at [%s].", source_dir
        )
    else:
        default_src_dir = os.path.join(root_dir, "src", "elasticsearch")
        self.logger.debug(
            "Could not autodetect Elasticsearch project directory. Providing [%s] as default.",
            default_src_dir,
        )
        source_dir = default_src_dir

    if advanced_config:
        source_dir = io.normalize_path(
            self._ask_property(
                "Enter your Elasticsearch project directory:", default_value=source_dir
            )
        )
    if not advanced_config:
        self.o("* Setting up benchmark source directory in %s" % source_dir)
        self.o("")

    # Not everybody might have SSH access. Play safe with the default. It may be slower but this will work for everybody.
    repo_url = "https://github.com/elastic/elasticsearch.git"

    if advanced_config:
        data_store_choice = self._ask_property(
            "Where should metrics be kept?"
            "\n\n"
            "(1) In memory (simpler but less options for analysis)\n"
            "(2) Elasticsearch (requires a separate ES instance, keeps all raw samples for analysis)"
            "\n\n",
            default_value="1",
            choices=["1", "2"],
        )
        if data_store_choice == "1":
            env_name = "local"
            data_store_type = "in-memory"
            (
                data_store_host,
                data_store_port,
                data_store_secure,
                data_store_user,
                data_store_password,
            ) = "", "", "", "", ""
        else:
            data_store_type = "elasticsearch"
            (
                data_store_host,
                data_store_port,
                data_store_secure,
                data_store_user,
                data_store_password,
            ) = self._ask_data_store()

            env_name = self._ask_env_name()

        preserve_install = convert.to_bool(
            self._ask_property(
                "Do you want Rally to keep the Elasticsearch benchmark candidate "
                "installation including the index (will use several GB per trial run)?",
                default_value=False,
            )
        )
    else:
        # Does not matter for an in-memory store
        env_name = "local"
        data_store_type = "in-memory"
        (
            data_store_host,
            data_store_port,
            data_store_secure,
            data_store_user,
            data_store_password,
        ) = "", "", "", "", ""
        preserve_install = False

    config = configparser.ConfigParser()
    config["meta"] = {}
    config["meta"]["config.version"] = str(Config.CURRENT_CONFIG_VERSION)

    config["system"] = {}
    config["system"]["env.name"] = env_name

    config["node"] = {}
    config["node"]["root.dir"] = root_dir

    final_source_dir = io.normalize_path(
        os.path.abspath(os.path.join(source_dir, os.pardir))
    )
    config["node"]["src.root.dir"] = final_source_dir

    config["source"] = {}
    config["source"]["remote.repo.url"] = repo_url
    # the Elasticsearch directory is just the last path component (relative to the source root directory)
    config["source"]["elasticsearch.src.subdir"] = io.basename(source_dir)

    config["benchmarks"] = {}
    config["benchmarks"]["local.dataset.cache"] = os.path.join(root_dir, "data")

    config["reporting"] = {}
    config["reporting"]["datastore.type"] = data_store_type
    config["reporting"]["datastore.host"] = data_store_host
    config["reporting"]["datastore.port"] = data_store_port
    config["reporting"]["datastore.secure"] = data_store_secure
    config["reporting"]["datastore.user"] = data_store_user
    config["reporting"]["datastore.password"] = data_store_password

    config["tracks"] = {}
    config["tracks"]["default.url"] = "https://github.com/elastic/rally-tracks"

    config["teams"] = {}
    config["teams"]["default.url"] = "https://github.com/elastic/rally-teams"

    config["defaults"] = {}
    config["defaults"]["preserve_benchmark_candidate"] = str(preserve_install)

    config["distributions"] = {}
    config["distributions"]["release.cache"] = "true"

    config_file.store(config)

    self.o(
        "Configuration successfully written to %s. Happy benchmarking!"
        % config_file.location
    )
    self.o("")
    self.o("More info about Rally:")
    self.o("")
    self.o("* Type %s --help" % PROGRAM_NAME)
    self.o("* Read the documentation at %s" % console.format.link(DOC_LINK))
    self.o(
        "* Ask a question on the forum at %s"
        % console.format.link("https://discuss.elastic.co/c/elasticsearch/rally")
    )