コード例 #1
0
def _start_server(server_val, basedir, datadir, options=None):
    """Start an instance of a server in read only mode

    This method is used to start the server in read only mode. It will launch
    the server with --skip-grant-tables and --read_only options set.

    Caller must stop the server with _stop_server().

    server_val[in]    dictionary of server connection values
    basedir[in]       the base directory for the server
    datadir[in]       the data directory for the server
    options[in]       dictionary of options (verbosity)
    """
    if options is None:
        options = {}
    verbosity = options.get("verbosity", 0)
    start_timeout = options.get("start_timeout", 10)

    mysqld_path = get_tool_path(basedir, "mysqld")

    print "# Server is offline."

    # Check server version
    print "# Checking server version ...",
    version = get_mysqld_version(mysqld_path)
    print "done."
    post_5_6 = version is not None and \
        int(version[0]) >= 5 and int(version[1]) >= 6

    # Start the instance
    print "# Starting read-only instance of the server ...",
    args = [
        "--no-defaults",
        "--skip-grant-tables",
        "--read_only",
        "--port=%(port)s" % server_val,
        "--basedir=" + basedir,
        "--datadir=" + datadir,
    ]

    # It the server is 5.6 or later, we must use additional parameters
    if post_5_6:
        args_5_6 = [
            "--skip-slave-start",
            "--skip-innodb",
            "--default-storage-engine=MYISAM",
            "--default-tmp-storage-engine=MYISAM",
            "--server-id=0",
        ]
        args.extend(args_5_6)
    args.insert(0, mysqld_path)

    socket = server_val.get('unix_socket', None)
    if socket is not None:
        args.append("--socket=%(unix_socket)s" % server_val)
    if verbosity > 0:
        subprocess.Popen(args, shell=False)
    else:
        out = open(os.devnull, 'w')
        subprocess.Popen(args, shell=False, stdout=out, stderr=out)

    server_options = {
        'conn_info': server_val,
        'role': "read_only",
    }
    server = Server(server_options)

    # Try to connect to the server, waiting for the server to become ready
    # (retry start_timeout times and wait 1 sec between each attempt).
    # Note: It can take up to 10 seconds for Windows machines.
    i = 0
    while i < start_timeout:
        # Reset error and wait 1 second.
        error = None
        time.sleep(1)
        try:
            server.connect()
            break  # Server ready (connect succeed)! Exit the for loop.
        except UtilError as err:
            # Store exception to raise later (if needed).
            error = err
        i += 1
    # Raise last known exception (if unable to connect to the server)
    if error:
        raise error  # pylint: disable=E0702
                     # See: http://www.logilab.org/ticket/3207
    print "done."
    return server
コード例 #2
0
def _start_server(server_val, basedir, datadir, options=None):
    """Start an instance of a server in read only mode

    This method is used to start the server in read only mode. It will launch
    the server with --skip-grant-tables and --read_only options set.

    Caller must stop the server with _stop_server().

    server_val[in]    dictionary of server connection values
    basedir[in]       the base directory for the server
    datadir[in]       the data directory for the server
    options[in]       dictionary of options (verbosity)
    """
    if options is None:
        options = {}
    verbosity = options.get("verbosity", 0)
    start_timeout = options.get("start_timeout", 10)

    mysqld_path = get_tool_path(basedir, "mysqld", quote=True)

    print "# Server is offline."

    # Check server version
    print "# Checking server version ...",
    version = get_mysqld_version(mysqld_path)
    print "done."
    if version is not None and int(version[0]) >= 5:
        post_5_5 = int(version[1]) >= 5
        post_5_6 = int(version[1]) >= 6
        post_5_7_4 = int(version[1]) >= 7 and int(version[2]) > 4
    else:
        print("# Warning: cannot get server version.")
        post_5_5 = False
        post_5_6 = False
        post_5_7_4 = False

    # Get the user executing the utility to use in the mysqld options.
    # Note: the option --user=user_name is mandatory to start mysqld as root.
    user_name = getpass.getuser()

    # Start the instance
    if verbosity > 0:
        print "# Starting read-only instance of the server ..."
        print "# --- BEGIN (server output) ---"
    else:
        print "# Starting read-only instance of the server ...",
    args = shlex.split(mysqld_path)
    args.extend([
        "--no-defaults",
        "--skip-grant-tables",
        "--read_only",
        "--port=%(port)s" % server_val,
        "--basedir=" + basedir,
        "--datadir=" + datadir,
        "--user={0}".format(user_name),
    ])

    # It the server is 5.6 or later, we must use additional parameters
    if post_5_5:
        server_args = [
            "--skip-slave-start",
            "--default-storage-engine=MYISAM",
            "--server-id=0",
        ]
        if post_5_6:
            server_args.append("--default-tmp-storage-engine=MYISAM")
        if not post_5_7_4:
            server_args.append("--skip-innodb")
        args.extend(server_args)

    socket = server_val.get('unix_socket', None)
    if socket is not None:
        args.append("--socket=%(unix_socket)s" % server_val)
    if verbosity > 0:
        subprocess.Popen(args, shell=False)
    else:
        out = open(os.devnull, 'w')
        subprocess.Popen(args, shell=False, stdout=out, stderr=out)

    server_options = {
        'conn_info': server_val,
        'role': "read_only",
    }
    server = Server(server_options)

    # Try to connect to the server, waiting for the server to become ready
    # (retry start_timeout times and wait 1 sec between each attempt).
    # Note: It can take up to 10 seconds for Windows machines.
    i = 0
    while i < start_timeout:
        # Reset error and wait 1 second.
        error = None
        time.sleep(1)
        try:
            server.connect()
            break  # Server ready (connect succeed)! Exit the for loop.
        except UtilError as err:
            # Store exception to raise later (if needed).
            error = err
        i += 1

    # Indicate end of the server output.
    if verbosity > 0:
        print "# --- END (server output) ---"

    # Raise last known exception (if unable to connect to the server)
    if error:
        # See: http://www.logilab.org/ticket/3207
        # pylint: disable=E0702
        raise error

    if verbosity > 0:
        print "# done (server started)."
    else:
        print "done."

    return server
コード例 #3
0
def clone_server(conn_val, options):
    """Clone an existing server

    This method creates a new instance of a running server using a datadir
    set to the new_data parametr, with a port set to new_port, server_id
    set to new_id and a root password of root_pass. You can also specify
    additional parameters for the mysqld command line as well as turn on
    verbosity mode to display more diagnostic information during the clone
    process.

    The method will build a new base database installation from the .sql
    files used to construct a new installation. Once the database is
    created, the server will be started.

    dest_val[in]        a dictionary containing connection information
                        including:
                        (user, password, host, port, socket)
    options[in]         dictionary of options:
      new_data[in]        An existing path to create the new database and use
                          as datadir for new instance
                          (default = None)
      new_port[in]        Port number for new instance
                          (default = 3307)
      new_id[in]          Server_id for new instance
                          (default = 2)
      root_pass[in]       Password for root user on new instance (optional)
      mysqld_options[in]  Additional command line options for mysqld
      verbosity[in]       Print additional information during operation
                          (default is 0)
      quiet[in]           If True, do not print messages.
                          (default is False)
      cmd_file[in]        file name to write startup command
      start_timeout[in]   Number of seconds to wait for server to start
    """
    new_data = os.path.abspath(options.get('new_data', None))
    new_port = options.get('new_port', '3307')
    root_pass = options.get('root_pass', None)
    verbosity = options.get('verbosity', 0)
    user = options.get('user', 'root')
    quiet = options.get('quiet', False)
    cmd_file = options.get('cmd_file', None)
    start_timeout = int(options.get('start_timeout', 10))
    mysqld_options = options.get('mysqld_options', '')
    force = options.get('force', False)
    quote_char = "'" if os.name == "posix" else '"'

    if not check_port_in_use('localhost', int(new_port)):
        raise UtilError("Port {0} in use. Please choose an "
                        "available port.".format(new_port))

    # Check if path to database files is greater than MAX_DIR_SIZE char,
    if len(new_data) > MAX_DATADIR_SIZE and not force:
        raise UtilError("The --new-data path '{0}' is too long "
                        "(> {1} characters). Please use a smaller one. "
                        "You can use the --force option to skip this "
                        "check".format(new_data, MAX_DATADIR_SIZE))

    # Clone running server
    if conn_val is not None:
        # Try to connect to the MySQL database server.
        server1_options = {
            'conn_info': conn_val,
            'role': "source",
        }
        server1 = Server(server1_options)
        server1.connect()
        if not quiet:
            print "# Cloning the MySQL server running on %s." % \
                conn_val["host"]

        # Get basedir
        rows = server1.exec_query("SHOW VARIABLES LIKE 'basedir'")
        if not rows:
            raise UtilError("Unable to determine basedir of running server.")
        basedir = os.path.normpath(rows[0][1])

    # Cloning downed or offline server
    else:
        basedir = os.path.abspath(options.get("basedir", None))
        if not quiet:
            print "# Cloning the MySQL server located at %s." % basedir

    new_data_deleted = False
    # If datadir exists, has data, and user said it was Ok, delete it
    if os.path.exists(new_data) and options.get("delete", False) and \
       os.listdir(new_data):
        new_data_deleted = True
        shutil.rmtree(new_data, True)

    # Create new data directory if it does not exist
    if not os.path.exists(new_data):
        if not quiet:
            print "# Creating new data directory..."
        try:
            os.mkdir(new_data)
        except OSError as err:
            raise UtilError("Unable to create directory '{0}', reason: {1}"
                            "".format(new_data, err.strerror))

    # After create the new data directory, check for free space, so the errors
    # regarding invalid or inaccessible path had been dismissed already.
    # If not force specified verify and stop if there is not enough free space
    if not force and os.path.exists(new_data) and \
       estimate_free_space(new_data) < REQ_FREE_SPACE:
        # Don't leave empty folders, delete new_data if was previously deleted
        if os.path.exists(new_data) and new_data_deleted:
            shutil.rmtree(new_data, True)
        raise UtilError(LOW_SPACE_ERRR_MSG.format(directory=new_data,
                                                  megabytes=REQ_FREE_SPACE))

    # Check for warning of using --skip-innodb
    mysqld_path = get_tool_path(basedir, "mysqld")
    version_str = get_mysqld_version(mysqld_path)
    # convert version_str from str tuple to integer tuple if possible
    if version_str is not None:
        version = tuple([int(digit) for digit in version_str])
    else:
        version = None
    if mysqld_options is not None and ("--skip-innodb" in mysqld_options or
       "--innodb" in mysqld_options) and version is not None and \
       version >= (5, 7, 5):
        print("# WARNING: {0}".format(WARN_OPT_SKIP_INNODB))

    if not quiet:
        print "# Configuring new instance..."
        print "# Locating mysql tools..."

    mysqladmin_path = get_tool_path(basedir, "mysqladmin")

    mysql_basedir = basedir
    if os.path.exists(os.path.join(basedir, "local/mysql/share/")):
        mysql_basedir = os.path.join(mysql_basedir, "local/mysql/")
    # for source trees
    elif os.path.exists(os.path.join(basedir, "/sql/share/english/")):
        mysql_basedir = os.path.join(mysql_basedir, "/sql/")


    locations = [
        ("mysqld", mysqld_path),
        ("mysqladmin", mysqladmin_path),
        ]
    # From 5.7.6 version onwards, bootstrap is done via mysqld with the
    # --initialize-insecure option, so no need to get information about the
    # sql system tables that need to be loaded.
    if version < (5, 7, 6):
        system_tables = get_tool_path(basedir, "mysql_system_tables.sql",
                                      False)
        system_tables_data = get_tool_path(basedir,
                                           "mysql_system_tables_data.sql",
                                           False)
        test_data_timezone = get_tool_path(basedir,
                                           "mysql_test_data_timezone.sql",
                                           False)
        help_data = get_tool_path(basedir, "fill_help_tables.sql", False)
        locations.extend([("mysql_system_tables.sql", system_tables),
                          ("mysql_system_tables_data.sql", system_tables_data),
                          ("mysql_test_data_timezone.sql", test_data_timezone),
                          ("fill_help_tables.sql", help_data),
                          ])

    if verbosity >= 3 and not quiet:
        print "# Location of files:"
        if cmd_file is not None:
            locations.append(("write startup command to", cmd_file))

        for location in locations:
            print "# % 28s: %s" % location

    # Create the new mysql data with mysql_import_db-like process
    if not quiet:
        print "# Setting up empty database and mysql tables..."

    fnull = open(os.devnull, 'w')

    # For MySQL versions before 5.7.6, use regular bootstrap procedure.
    if version < (5, 7, 6):
        # Get bootstrap SQL statements
        sql = list()
        sql.append("CREATE DATABASE mysql;")
        sql.append("USE mysql;")
        innodb_disabled = False
        if mysqld_options:
            innodb_disabled = '--innodb=OFF' in mysqld_options
        for sqlfile in [system_tables, system_tables_data, test_data_timezone,
                        help_data]:
            lines = open(sqlfile, 'r').readlines()
            # On MySQL 5.7.5, the [email protected] account creation was
            # moved from the system_tables_data sql file into the
            # mysql_install_db binary. Since we don't use mysql_install_db
            # directly we need to create the root user account ourselves.
            if (version is not None and version == (5, 7, 5) and
                    sqlfile == system_tables_data):
                lines.extend(_CREATE_ROOT_USER)
            for line in lines:
                line = line.strip()
                # Don't fail when InnoDB is turned off (Bug#16369955)
                # (Ugly hack)
                if (sqlfile == system_tables and
                   "SET @[email protected]@SES" in line and innodb_disabled):
                    for line in lines:
                        if 'SET SESSION [email protected]@sql' in line:
                            break
                sql.append(line)

        # Bootstap to setup mysql tables
        cmd = [
            mysqld_path,
            "--no-defaults",
            "--bootstrap",
            "--datadir={0}".format(new_data),
            "--basedir={0}".format(os.path.abspath(mysql_basedir)),
        ]

        if verbosity >= 1 and not quiet:
            proc = subprocess.Popen(cmd, shell=False, stdin=subprocess.PIPE)
        else:
            proc = subprocess.Popen(cmd, shell=False, stdin=subprocess.PIPE,
                                    stdout=fnull, stderr=fnull)
        proc.communicate('\n'.join(sql))

    # From 5.7.6 onwards, mysql_install_db has been replaced by mysqld and
    # the --initialize option
    else:
        cmd = [
            mysqld_path,
            "--initialize-insecure=on",
            "--datadir={0}".format(new_data),
            "--basedir={0}".format(os.path.abspath(mysql_basedir))
        ]
        if verbosity >= 1 and not quiet:
            proc = subprocess.Popen(cmd, shell=False, stdin=subprocess.PIPE)
        else:
            proc = subprocess.Popen(cmd, shell=False, stdin=subprocess.PIPE,
                                    stdout=fnull, stderr=fnull)
    # Wait for subprocess to finish
    res = proc.wait()
    # Kill subprocess just in case it didn't finish - Ok if proc doesn't exist
    if int(res) != 0:
        if os.name == "posix":
            try:
                os.kill(proc.pid, subprocess.signal.SIGTERM)
            except OSError:
                raise UtilError("Failed to kill process with pid '{0}'"
                                "".format(proc.pid))
        else:
            ret_code = subprocess.call("taskkill /F /T /PID "
                                       "{0}".format(proc.pid), shell=True)

            # return code 0 means it was successful and 128 means it tried
            # to kill a process that doesn't exist
            if ret_code not in (0, 128):
                raise UtilError("Failed to kill process with pid '{0}'. "
                                "Return code {1}".format(proc.pid,
                                                         ret_code))

    # Drop the bootstrap file
    if os.path.isfile("bootstrap.sql"):
        os.unlink("bootstrap.sql")

    # Start the instance
    if not quiet:
        print "# Starting new instance of the server..."

    # If the user is not the same as the user running the script...
    # and this is a Posix system... and we are running as root
    if user_change_as_root(options):
        subprocess.call(['chown', '-R', user, new_data])
        subprocess.call(['chgrp', '-R', user, new_data])

    socket_path = os.path.join(new_data, 'mysql.sock')
    # If socket path is too long, use mkdtemp to create a tmp dir and
    # use it instead to store the socket
    if os.name == 'posix' and len(socket_path) > MAX_SOCKET_PATH_SIZE:
        socket_path = os.path.join(tempfile.mkdtemp(), 'mysql.sock')
        if not quiet:
            print("# WARNING: The socket file path '{0}' is too long (>{1}), "
                  "using '{2}' instead".format(
                      os.path.join(new_data, 'mysql.sock'),
                      MAX_SOCKET_PATH_SIZE, socket_path))

    cmd = {
        'datadir': '--datadir={0}'.format(new_data),
        'tmpdir': '--tmpdir={0}'.format(new_data),
        'pid-file': '--pid-file={0}'.format(
            os.path.join(new_data, "clone.pid")),
        'port': '--port={0}'.format(new_port),
        'server': '--server-id={0}'.format(options.get('new_id', 2)),
        'basedir': '--basedir={0}'.format(mysql_basedir),
        'socket': '--socket={0}'.format(socket_path),
    }
    if user:
        cmd.update({'user': '--user={0}'.format(user)})
    if mysqld_options:
        if isinstance(mysqld_options, (list, tuple)):
            cmd.update(dict(zip(mysqld_options, mysqld_options)))
        else:
            new_opts = mysqld_options.strip(" ")
            # Drop the --mysqld=
            if new_opts.startswith("--mysqld="):
                new_opts = new_opts[9:]
            if new_opts.startswith('"') and new_opts.endswith('"'):
                list_ = shlex.split(new_opts.strip('"'))
                cmd.update(dict(zip(list_, list_)))
            elif new_opts.startswith("'") and new_opts.endswith("'"):
                list_ = shlex.split(new_opts.strip("'"))
                cmd.update(dict(zip(list_, list_)))
            # Special case where there is only 1 option
            elif len(new_opts.split("--")) == 1:
                cmd.update({mysqld_options: mysqld_options})
            else:
                list_ = shlex.split(new_opts)
                cmd.update(dict(zip(list_, list_)))

    # set of options that must be surrounded with quotes
    options_to_quote = set(["datadir", "tmpdir", "basedir", "socket",
                            "pid-file"])

    # Strip spaces from each option
    for key in cmd:
        cmd[key] = cmd[key].strip(' ')

    # Write startup command if specified
    if cmd_file is not None:
        if verbosity >= 0 and not quiet:
            print "# Writing startup command to file."
        cfile = open(cmd_file, 'w')
        comment = " Startup command generated by mysqlserverclone.\n"
        if os.name == 'posix' and cmd_file.endswith('.sh'):
            cfile.write("#!/bin/sh\n")
            cfile.write("#{0}".format(comment))
        elif os.name == 'nt' and cmd_file.endswith('.bat'):
            cfile.write("REM{0}".format(comment))
        else:
            cfile.write("#{0}".format(comment))

        start_cmd_lst = ["{0}{1}{0} --no-defaults".format(quote_char,
                                                          mysqld_path)]

        # build start command
        for key, val in cmd.iteritems():
            if key in options_to_quote:
                val = "{0}{1}{0}".format(quote_char, val)
            start_cmd_lst.append(val)
        cfile.write("{0}\n".format(" ".join(start_cmd_lst)))
        cfile.close()

    if os.name == "nt" and verbosity >= 1:
        cmd.update({"console": "--console"})

    start_cmd_lst = [mysqld_path, "--no-defaults"]
    sorted_keys = sorted(cmd.keys())
    start_cmd_lst.extend([cmd[val] for val in sorted_keys])
    if verbosity >= 1 and not quiet:
        if verbosity >= 2:
            print("# Startup command for new server:\n"
                  "{0}".format(" ".join(start_cmd_lst)))
        proc = subprocess.Popen(start_cmd_lst, shell=False)
    else:
        proc = subprocess.Popen(start_cmd_lst, shell=False, stdout=fnull,
                                stderr=fnull)

    # Try to connect to the new MySQL instance
    if not quiet:
        print "# Testing connection to new instance..."
    new_sock = None

    if os.name == "posix":
        new_sock = socket_path
    port_int = int(new_port)

    conn = {
        "user": "root",
        "passwd": "",
        "host": conn_val["host"] if conn_val is not None else "localhost",
        "port": port_int,
        "unix_socket": new_sock
    }

    server2_options = {
        'conn_info': conn,
        'role': "clone",
    }
    server2 = Server(server2_options)

    i = 0
    while i < start_timeout:
        i += 1
        time.sleep(1)
        try:
            server2.connect()
            i = start_timeout + 1
        except:
            pass
        finally:
            if verbosity >= 1 and not quiet:
                print "# trying again..."

    if i == start_timeout:
        raise UtilError("Unable to communicate with new instance. "
                        "Process id = {0}.".format(proc.pid))
    elif not quiet:
        print "# Success!"

    # Set the root password
    if root_pass:
        if not quiet:
            print "# Setting the root password..."
        cmd = [mysqladmin_path, '--no-defaults', '-v', '-uroot']
        if os.name == "posix":
            cmd.append("--socket={0}".format(new_sock))
        else:
            cmd.append("--port={0}".format(int(new_port)))
        cmd.extend(["password", root_pass])
        if verbosity > 0 and not quiet:
            proc = subprocess.Popen(cmd, shell=False)
        else:
            proc = subprocess.Popen(cmd, shell=False,
                                    stdout=fnull, stderr=fnull)

        # Wait for subprocess to finish
        res = proc.wait()

    if not quiet:
        conn_str = "# Connection Information:\n"
        conn_str += "#  -uroot"
        if root_pass:
            conn_str += " -p%s" % root_pass
        if os.name == "posix":
            conn_str += " --socket=%s" % new_sock
        else:
            conn_str += " --port=%s" % new_port
        print conn_str
        print "#...done."

    fnull.close()
コード例 #4
0
ファイル: serverinfo.py プロジェクト: dannykopping/deploi
def _start_server(server_val, basedir, datadir, options={}):
    """Start an instance of a server in read only mode
    
    This method is used to start the server in read only mode. It will launch
    the server with --skip-grant-tables and --read_only options set.
    
    Caller must stop the server with _stop_server().
    
    server_val[in]    dictionary of server connection values
    basedir[in]       the base directory for the server
    datadir[in]       the data directory for the server
    options[in]       dictionary of options (verbosity)
    """
    from mysql.utilities.common.tools import get_tool_path, get_mysqld_version
    from mysql.utilities.common.server import Server
    import time
    
    verbosity = options.get("verbosity", 0)
    
    mysqld_path = get_tool_path(basedir, "mysqld")
    
    print "# Server is offline."

    # Check server version
    print "# Checking server version ...",
    version = get_mysqld_version(mysqld_path)
    print "done."
    post_5_6 = version is not None and \
               int(version[0]) >= 5 and int(version[1]) >= 6
    
    # Start the instance
    print "# Starting read-only instance of the server ...",
    args = [
        " -uroot",
        "--skip-grant-tables",
        "--read_only",
        "--port=%(port)s" % server_val,
        "--basedir=" + basedir,
        "--datadir=" + datadir,
    ]
    # It the server is 5.6 or later, we must use additional parameters
    if post_5_6:
        args_5_6 = [
            "--skip-slave-start",
            "--skip-innodb",
            "--default-storage-engine=MYISAM",
            "--default-tmp-storage-engine=MYISAM",
            "--server-id=0",
        ]
        args.extend(args_5_6)

    socket = server_val.get('unix_socket', None)
    if socket is not None:
        args.append("--socket=%(unix_socket)s" % server_val)
    if verbosity > 0:
        proc = subprocess.Popen(args, executable=mysqld_path)
    else:
        out = open(os.devnull, 'w')
        proc = subprocess.Popen(args, executable=mysqld_path,
                                stdout=out, stderr=out)

    server_options = {
        'conn_info' : server_val,
        'role'      : "read_only",
    }
    server = Server(server_options)
    # Now wait for the server to become ready - could be up to 10 seconds
    # for Windows machines.
    if os.name == "nt":
        time.sleep(10)
    else:
        time.sleep(1)
    server.connect()
    print "done."