def delete_dir_structure(self, client=None, cluster_name=None):
        if cluster_name is None:
            cluster_name = self.config.cluster_name
        cmd = """
rm -rf {0}/arakoon/{1}
rm -rf {0}/tlogs/{1}
rm -rf /var/log/arakoon/{1}
""".format(self.config.base_dir, cluster_name)
        System.run(cmd, client)
    def create_dir_structure(self, client=None, cluster_name=None):
        if cluster_name is None:
            cluster_name = self.config.cluster_name
        cmd = """
mkdir -p {0}/arakoon/{1}
mkdir -p {0}/tlogs/{1}
mkdir -p /var/log/arakoon/{1}
""".format(self.config.base_dir, cluster_name)
        System.run(cmd, client)