ERPNext OperationalError (2003, "Can't connect to MySQL server on u'localhost' ([Errno 22] Invalid argument)")

Question

尝试使用命令安装新站点时出现以下错误

bench --site site1.local install-app erpnext

这是在运行 Ubuntu 的 Windows Linux 子系统上的新安装。

我可以通过命令行使用root用户和我在安装过程中设置的密码登录mysql。

pymysql.err.OperationalError: (2003, “Can't connect to MySQL server on u'localhost' ([Errno 22] Invalid argument)”)

swadeesh@SWAD-PC:~/frappe-bench$ bench --site site1.local install-app erpnext
Traceback (most recent call last):
File "/usr/lib/python2.7/runpy.py", line 174, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
File "/usr/lib/python2.7/runpy.py", line 72, in _run_code
    exec code in run_globals
File "/home/swadeesh/frappe-bench/apps/frappe/frappe/utils/bench_helper.py", line 97, in <module>
    main()
File "/home/swadeesh/frappe-bench/apps/frappe/frappe/utils/bench_helper.py", line 18, in main
    click.Group(commands=commands)(prog_name='bench')
File "/home/swadeesh/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py", line 764, in __call__
    return self.main(*args, **kwargs)
File "/home/swadeesh/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py", line 717, in main
    rv = self.invoke(ctx)
File "/home/swadeesh/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
File "/home/swadeesh/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py", line 1137, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
File "/home/swadeesh/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py", line 956, in invoke
    return ctx.invoke(self.callback, **ctx.params)
File "/home/swadeesh/frappe-bench/env/local/lib/python2.7/site-packages/click/core.py", line 555, in invoke
    return callback(*args, **kwargs)
File "/home/swadeesh/frappe-bench/env/local/lib/python2.7/site-packages/click/decorators.py", line 17, in new_func
    return f(get_current_context(), *args, **kwargs)
File "/home/swadeesh/frappe-bench/apps/frappe/frappe/commands/__init__.py", line 25, in _func
    ret = f(frappe._dict(ctx.obj), *args, **kwargs)
File "/home/swadeesh/frappe-bench/apps/frappe/frappe/commands/site.py", line 169, in install_app
    _install_app(app, verbose=context.verbose)
File "/home/swadeesh/frappe-bench/apps/frappe/frappe/installer.py", line 52, in install_app
    frappe.clear_cache()
File "/home/swadeesh/frappe-bench/apps/frappe/frappe/__init__.py", line 555, in clear_cache
    frappe.cache_manager.clear_user_cache()
File "/home/swadeesh/frappe-bench/apps/frappe/frappe/cache_manager.py", line 42, in clear_user_cache
    clear_global_cache()
File "/home/swadeesh/frappe-bench/apps/frappe/frappe/cache_manager.py", line 48, in clear_global_cache
    clear_website_cache()
File "/home/swadeesh/frappe-bench/apps/frappe/frappe/website/render.py", line 291, in clear_cache
    for method in frappe.get_hooks("website_clear_cache"):
File "/home/swadeesh/frappe-bench/apps/frappe/frappe/__init__.py", line 931, in get_hooks
    hooks = _dict(cache().get_value("app_hooks", load_app_hooks))
File "/home/swadeesh/frappe-bench/apps/frappe/frappe/utils/redis_wrapper.py", line 79, in get_value
    val = generator()
File "/home/swadeesh/frappe-bench/apps/frappe/frappe/__init__.py", line 905, in load_app_hooks
    for app in [app_name] if app_name else get_installed_apps(sort=True):
File "/home/swadeesh/frappe-bench/apps/frappe/frappe/__init__.py", line 869, in get_installed_apps
    installed = json.loads(db.get_global("installed_apps") or "[]")
File "/home/swadeesh/frappe-bench/apps/frappe/frappe/database/database.py", line 692, in get_global
    return self.get_default(key, user)
File "/home/swadeesh/frappe-bench/apps/frappe/frappe/database/database.py", line 696, in get_default
    d = self.get_defaults(key, parent)
File "/home/swadeesh/frappe-bench/apps/frappe/frappe/database/database.py", line 714, in get_defaults
    defaults = frappe.defaults.get_defaults(parent)
File "/home/swadeesh/frappe-bench/apps/frappe/frappe/defaults.py", line 77, in get_defaults
    globald = get_defaults_for()
File "/home/swadeesh/frappe-bench/apps/frappe/frappe/defaults.py", line 204, in get_defaults_for
    where parent = %s order by creation""", (parent,), as_dict=1)
File "/home/swadeesh/frappe-bench/apps/frappe/frappe/database/database.py", line 122, in sql
    self.connect()
File "/home/swadeesh/frappe-bench/apps/frappe/frappe/database/database.py", line 75, in connect
    self._conn = self.get_connection()
File "/home/swadeesh/frappe-bench/apps/frappe/frappe/database/mariadb/database.py", line 89, in get_connection
    local_infile = frappe.conf.local_infile)
File "/home/swadeesh/frappe-bench/env/local/lib/python2.7/site-packages/pymysql/__init__.py", line 94, in Connect
    return Connection(*args, **kwargs)
File "/home/swadeesh/frappe-bench/env/local/lib/python2.7/site-packages/pymysql/connections.py", line 325, in __init__
    self.connect()
File "/home/swadeesh/frappe-bench/env/local/lib/python2.7/site-packages/pymysql/connections.py", line 630, in connect
    raise exc
pymysql.err.OperationalError: (2003, "Can't connect to MySQL server on u'localhost' ([Errno 22] Invalid argument)")

Answer 1

我想你已经启用了 mysqld_safe 模式。 检查您是否启用了 mysqld_safe 模式：sudo ps -aux | grep "mysqld_safe" 如果它出现在输出结果中，那么您必须使用以下命令禁用它：

停止mysql服务并使用/etc/init.d/mysql start启动它以正常模式启动。

为什么您无法使用 Python 客户端进行连接，因为 root 用户不需要 mysql 密码即可登录 mysql，但由于 mysqld_safe 模式开启，您将无法使用非 root 用户进行连接。