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Shell/Bash queries related to “GVfs metadata is not supported. Fallback to TeplMetadataManager.” gvfs metadata is not supported. Fallback to teplmetadatamanager. Either gvfs is not correctly installed or gvfs metadata are not supported on this platform. In the latter case, you should configure tepl with disable gvfs metadata. On further investigation, I found this pypa/pip#6256 which suggests the issue is that wheels simply aren't supported with PEP 517 builds. My best guess would be to pip install -upgrade pip setuptools wheel and that should resolve the issue.

7.2.1 Creating a Database with Code First in EF Core
7.2.2 Scaffolding an Existing Database in EF Core
7.2.3 Configuring Character Sets and Collations in EF Core

MySQL Connector/NET integrates support for Entity Framework Core (EF Core). The requirements and configuration of EF Core depend on the version of Connector/NET installed and the features that you require. Use the table that follows to evaluate the minimum requirements.

Table 7.2 Connector/NET Versions and Entity Framework Core Support

Connector/NETEF Core 2.1EF Core 3.1.1EF Core 5.0
8.0.23Not supported.NET Standard 2.0.NET Standard 2.1 (feature set is equivalent to EF Core 3.1.1)
8.0.20 to 8.0.22Not supported.NET Standard 2.0Not supported
8.0.18 to 8.0.19.NET Standard 2.0 or .NET Framework 4.6.1 (and later)Not supportedNot supported
8.0.13 to 8.0.17.NET Standard 2.0 or .NET Framework 4.6.1 (and later)Not supportedNot supported
8.0.11 to 8.0.12Not supportedNot supportedNot supported

In this section:

General Requirements for EF Core Support

  • Connector/NET 8.0

  • MySQL 5.7 or MySQL 8.0 server

  • Entity Framework Core packages:

    • MySql.EntityFrameworkCore 5.0.0+m8.0.2x and 3.1.10+m8.0.2x (Connector/NET 8.0.23 and higher on .NET)

    • MySql.Data.EntityFrameworkCore 8.0.2x (Connector/NET 8.0.22 and earlier)

  • An implementation of .NET Standard) or .NET Framework that is supported by Connector/NET (see Table 7.2, “Connector/NET Versions and Entity Framework Core Support”)

  • .NET | .NET Core SDK

    • .NET 5.0 for all supported platforms: https://dotnet.microsoft.com/download/dotnet/5.0

    • .NET Core for Microsoft Windows: https://www.microsoft.com/net/core#windowscmd

    • .NET Core for Linux: https://www.microsoft.com/net/core#linuxredhat

    • .NET Core for macOS: https://www.microsoft.com/net/core#macos Docker centos 7 install online.

    • Docker: https://www.microsoft.com/net/core#dockercmd

  • Optional: Microsoft Visual Studio 2015, 2017, 2019, or Code

    For EF Core 3.1, Visual Studio 2019 version 16.3 is the minimum.

Configuration with MySQL

To use Entity Framework Core with a MySQL database, do the following:

  1. Install the NuGet package.

    When you install either the MySql.EntityFrameworkCore or MySql.Data.EntityFrameworkCore package, all of the related packages required to run your application are installed for you. For instructions on adding a NuGet package, see the relevant Microsoft documentation.

  2. In the class that derives from the DbContext class, override the OnConfiguring method to set the MySQL data provider with UseMySQL. The following example shows how to set the provider using a generic connection string in C#.

Limitations

The Connector/NET implementation of EF Core has the following limitations:

Mysqlclient

Maximum String Length

The following table shows the maximum length of string types supported by the Connector/NET implementation of EF Core. Length values are in bytes for nonbinary and binary string types, depending on the character set used.

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Table 7.3 Maximum Length of strings used with Entity Framework Core

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Data TypeMaximum Length.NET Type
CHAR255string
BINARY255byte[]
VARCHAR, VARBINARY65,535string, byte[]
TINYBLOB, TINYTEXT255byte[]
BLOB, TEXT65,535byte[]
MEDIUMBLOB, MEDIUMTEXT16,777,215byte[]
LONGBLOB, LONGTEXT4,294,967,295byte[]
ENUM65,535string
SET65,535string

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For additional information about the storage requirements of the string types, see String Type Storage Requirements.