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  1. MariaDB Connector/C
  2. CONC-713

Unable to connect to MariaDB Server over Python

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Details

    • Bug
    • Status: Needs Feedback (View Workflow)
    • Major
    • Resolution: Unresolved
    • 3.3.10
    • None
    • Authentication
    • None
    • RockyLinux9.4
      Python3.11 sources
      Python3.11 appstream repository
      mariadb-connector-c 3.2.6
      mariadb-connector-c 3.3.10
      TLS

    Description

      When using python3.11 I am unable to connect to an external MariaDB Server running 10.6.18
      On a RockyLinux 9.4 system, new (with groupinstall Development Tools) , I installed python3.11 from the sources, MariaDB-client from mariadb-main repo and tested on an app with `pymysql`
      Result:

      MySQL root password: 
      Traceback (most recent call last):
        File "<frozen runpy>", line 198, in _run_module_as_main
        File "<frozen runpy>", line 88, in _run_code
        File "/opt/frappe/bench/apps/frappe/frappe/utils/bench_helper.py", line 114, in <module>
          main()
        File "/opt/frappe/bench/apps/frappe/frappe/utils/bench_helper.py", line 20, in main
          click.Group(commands=commands)(prog_name="bench")
        File "/opt/frappe/bench/env/lib/python3.11/site-packages/click/core.py", line 1157, in __call__
          return self.main(*args, **kwargs)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/opt/frappe/bench/env/lib/python3.11/site-packages/click/core.py", line 1078, in main
          rv = self.invoke(ctx)
               ^^^^^^^^^^^^^^^^
        File "/opt/frappe/bench/env/lib/python3.11/site-packages/click/core.py", line 1688, in invoke
          return _process_result(sub_ctx.command.invoke(sub_ctx))
                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/opt/frappe/bench/env/lib/python3.11/site-packages/click/core.py", line 1688, in invoke
          return _process_result(sub_ctx.command.invoke(sub_ctx))
                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/opt/frappe/bench/env/lib/python3.11/site-packages/click/core.py", line 1434, in invoke
          return ctx.invoke(self.callback, **ctx.params)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/opt/frappe/bench/env/lib/python3.11/site-packages/click/core.py", line 783, in invoke
          return __callback(*args, **kwargs)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/opt/frappe/bench/apps/frappe/frappe/commands/site.py", line 68, in new_site
          _new_site(
        File "/opt/frappe/bench/apps/frappe/frappe/installer.py", line 87, in _new_site
          install_db(
        File "/opt/frappe/bench/apps/frappe/frappe/installer.py", line 160, in install_db
          setup_database(force, source_sql, verbose, no_mariadb_socket)
        File "/opt/frappe/bench/apps/frappe/frappe/database/__init__.py", line 21, in setup_database
          return frappe.database.mariadb.setup_db.setup_database(
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/opt/frappe/bench/apps/frappe/frappe/database/mariadb/setup_db.py", line 31, in setup_database
          if force or (db_name not in dbman.get_database_list()):
                                      ^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/opt/frappe/bench/apps/frappe/frappe/database/db_manager.py", line 50, in get_database_list
          return self.db.sql("SHOW DATABASES", pluck=True)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/opt/frappe/bench/apps/frappe/frappe/database/database.py", line 211, in sql
          self.connect()
        File "/opt/frappe/bench/apps/frappe/frappe/database/database.py", line 117, in connect
          self._conn: "MariadbConnection" | "PostgresConnection" = self.get_connection()
                                                                   ^^^^^^^^^^^^^^^^^^^^^
        File "/opt/frappe/bench/apps/frappe/frappe/database/mariadb/database.py", line 107, in get_connection
          conn = self._get_connection()
                 ^^^^^^^^^^^^^^^^^^^^^^
        File "/opt/frappe/bench/apps/frappe/frappe/database/mariadb/database.py", line 113, in _get_connection
          return self.create_connection()
                 ^^^^^^^^^^^^^^^^^^^^^^^^
        File "/opt/frappe/bench/apps/frappe/frappe/database/mariadb/database.py", line 116, in create_connection
          return pymysql.connect(**self.get_connection_settings())
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/opt/frappe/bench/env/lib/python3.11/site-packages/pymysql/connections.py", line 361, in __init__
          self.connect()
        File "/opt/frappe/bench/env/lib/python3.11/site-packages/pymysql/connections.py", line 669, in connect
          self._request_authentication()
        File "/opt/frappe/bench/env/lib/python3.11/site-packages/pymysql/connections.py", line 957, in _request_authentication
          auth_packet = self._read_packet()
                        ^^^^^^^^^^^^^^^^^^^
        File "/opt/frappe/bench/env/lib/python3.11/site-packages/pymysql/connections.py", line 775, in _read_packet
          packet.raise_for_error()
        File "/opt/frappe/bench/env/lib/python3.11/site-packages/pymysql/protocol.py", line 219, in raise_for_error
          err.raise_mysql_exception(self._data)
        File "/opt/frappe/bench/env/lib/python3.11/site-packages/pymysql/err.py", line 150, in raise_mysql_exception
          raise errorclass(errno, errval)
      pymysql.err.OperationalError: (1045, "Access denied for user 'root'@'server-ip' (using password: YES)")
      

      So I did a shell script to do "select user()" put the same server credentials and connects successfully.

      I then did a python script which imports mariadb instead of pymysql and fails with the exact same error. (Access denied for user using password YES)

      So I went and did a new clean system. Instead of installing python3.11 from the sources I went for the package supplied on appstream.
      So after python3.11 I used pip3.11 to install mariadb==1.0.10

      Fails with:

      $ pip3.11 install mariadb==1.0.11
      Defaulting to user installation because normal site-packages is not writeable
      Collecting mariadb==1.0.11
        Downloading mariadb-1.0.11.zip (85 kB)
           ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 85.9/85.9 kB 1.1 MB/s eta 0:00:00
        Preparing metadata (setup.py) ... done
      Installing collected packages: mariadb
        DEPRECATION: mariadb is being installed using the legacy 'setup.py install' method, because it does not have a 'pyproject.toml' and the 'wheel' package is not installed. pip 23.1 will enforce this behaviour change. A possible replacement is to enable the '--use-pep517' option. Discussion can be found at https://github.com/pypa/pip/issues/8559
        Running setup.py install for mariadb ... error
        error: subprocess-exited-with-error
        
        × Running setup.py install for mariadb did not run successfully.
        │ exit code: 1
        ╰─> [41 lines of output]
            10.8.8
            running install
            /usr/lib/python3.11/site-packages/setuptools/command/install.py:34: SetuptoolsDeprecationWarning: setup.py install is deprecated. Use build and pip and other standards-based tools.
              warnings.warn(
            running build
            running build_py
            creating build
            creating build/lib.linux-x86_64-cpython-311
            creating build/lib.linux-x86_64-cpython-311/mariadb
            copying mariadb/__init__.py -> build/lib.linux-x86_64-cpython-311/mariadb
            creating build/lib.linux-x86_64-cpython-311/mariadb/constants
            copying mariadb/constants/__init__.py -> build/lib.linux-x86_64-cpython-311/mariadb/constants
            copying mariadb/constants/CLIENT.py -> build/lib.linux-x86_64-cpython-311/mariadb/constants
            copying mariadb/constants/INDICATOR.py -> build/lib.linux-x86_64-cpython-311/mariadb/constants
            copying mariadb/constants/CURSOR.py -> build/lib.linux-x86_64-cpython-311/mariadb/constants
            copying mariadb/constants/FIELD_TYPE.py -> build/lib.linux-x86_64-cpython-311/mariadb/constants
            running build_ext
            building 'mariadb._mariadb' extension
            creating build/temp.linux-x86_64-cpython-311
            creating build/temp.linux-x86_64-cpython-311/mariadb
            gcc -Wsign-compare -DDYNAMIC_ANNOTATIONS_ENABLED=1 -DNDEBUG -O2 -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fstack-protector-strong -m64 -march=x86-64-v2 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -D_GNU_SOURCE -fPIC -fwrapv -O2 -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fstack-protector-strong -m64 -march=x86-64-v2 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -D_GNU_SOURCE -fPIC -fwrapv -O2 -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -fstack-protector-strong -m64 -march=x86-64-v2 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -D_GNU_SOURCE -fPIC -fwrapv -fPIC -DPY_MARIADB_MAJOR_VERSION=1 -DPY_MARIADB_MINOR_VERSION=0 -DPY_MARIADB_PATCH_VERSION=11 -I/usr/local/include/mariadb -I/usr/local/include/mariadb/mysql -I./include -I/usr/include/python3.11 -c mariadb/mariadb.c -o build/temp.linux-x86_64-cpython-311/mariadb/mariadb.o -DDEFAULT_PLUGINS_SUBDIR=\"/usr/local/lib/mariadb/plugin\"
            mariadb/mariadb.c: In function ‘PyInit__mariadb’:
            mariadb/mariadb.c:155:35: error: lvalue required as left operand of assignment
              155 |     Py_TYPE(&MrdbConnection_Type) = &PyType_Type;
                  |                                   ^
            mariadb/mariadb.c:168:31: error: lvalue required as left operand of assignment
              168 |     Py_TYPE(&MrdbCursor_Type) = &PyType_Type;
                  |                               ^
            mariadb/mariadb.c:174:29: error: lvalue required as left operand of assignment
              174 |     Py_TYPE(&MrdbPool_Type) = &PyType_Type;
                  |                             ^
            mariadb/mariadb.c:180:34: error: lvalue required as left operand of assignment
              180 |     Py_TYPE(&MrdbIndicator_Type) = &PyType_Type;
                  |                                  ^
            mariadb/mariadb.c:186:38: error: lvalue required as left operand of assignment
              186 |     Py_TYPE(&Mariadb_Fieldinfo_Type) = &PyType_Type;
                  |                                      ^
            mariadb/mariadb.c:192:38: error: lvalue required as left operand of assignment
              192 |     Py_TYPE(&Mariadb_DBAPIType_Type) = &PyType_Type;
                  |                                      ^
            error: command '/usr/bin/gcc' failed with exit code 1
            [end of output]
        
        note: This error originates from a subprocess, and is likely not a problem with pip.
      error: legacy-install-failure
       
      × Encountered error while trying to install package.
      ╰─> mariadb
       
      note: This is an issue with the package mentioned above, not pip.
      hint: See above for output from the failure.
      

      And install latest failed bc mariadb latest required connector-c 3.3.1 (and had 3.2.6 supplied on the repo)
      So I got connector-c 3.3.10 source, installed (came to make build then make and make install) and had to add a mariadb-connector-c.conf to /etc/ld.so.conf.d and installed mariadb==1.1.10

      Running the python script, I get:

      $ python3.11 db-test.py 
      Traceback (most recent call last):
        File "/opt/frappe/db-test.py", line 28, in <module>
          display_user()
        File "/opt/frappe/db-test.py", line 25, in display_user
          result = execute_query(query)
                   ^^^^^^^^^^^^^^^^^^^^
        File "/opt/frappe/db-test.py", line 9, in execute_query
          conn = mariadb.connect(
                 ^^^^^^^^^^^^^^^^
        File "/usr/local/lib64/python3.11/site-packages/mariadb/__init__.py", line 146, in connect
          connection = connectionclass(*args, **kwargs)
                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/usr/local/lib64/python3.11/site-packages/mariadb/connections.py", line 85, in __init__
          super().__init__(*args, **kwargs)
      mariadb.OperationalError: Access denied for user 'root'@'10.0.0.1' (using password: YES)
      

      But using a shell script with the exact same credentials returns:

      +-----------------+
      | user()          |
      +-----------------+
      | root@10.0.0.1   |
      +-----------------+
      

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            georg Georg Richter
            rmendes Ricardo Mendes
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              Updated:

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