amazon-ebs: Error waiting for SSH: ssh: handshake failed: ssh: unable to authenticate, attempted methods [none publickey], no supported methods remain

When you launch a Linux AWS EC2 instance with Terraform or create a Linux AWS image with Packer, one of the following errors are displayed: amazon-ebs: Error waiting for SSH: ssh: handshake failed: ssh: unable to authenticate, attempted methods [none publickey], no supported methods remain aws_instance.default: 1 error(s) occurred: * ssh: handshake failed: ssh: unable to …

Procedure or function ‘`…_Insert`’ cannot be found in database …

When you use the Microsoft .NET Entity framework to access a MySql database, the autogenerated code throws an error when you try to insert a row into the database with context.MY_TABLE.Add(MY_OBJECT); Server Error in ‘/’ Application. Procedure or function ‘`…_Insert`’ cannot be found in database ‘`…`’. Description: An unhandled exception occurred during the execution of …

No connection string named ‘…’ could be found in the application config file.

Two-tier applications separate the presentation layer and the data layer, and all database access related objects are located in the data-tier. When the application runs, the config file of the main project is read. In web applications, it is the web.config, in console applications the app.config file. When you get the following runtime exception Exception thrown: ‘System.InvalidOperationException’ in …

delimited by end-of-file (wanted `EOF’)

When you create a file in a script and use an end of file delimiter, if … cat <<EOF> $chef_dir/attrib.json $json EOF fi and you indent the word EOF to look nicer, you will get the error message warning: here-document at line … delimited by end-of-file (wanted `EOF’) STDERR> …: line …: syntax error: unexpected end of file …

could not find filename for attribute .DS_Store in cookbook

The Macintosh workstation saves application states in .DS_Store files. When you edit your Chef cookbooks the MacOS leaves these files in many folders. When the Chef cookbook is executed, the Chef Client reads all files in the attributes folder and tries to extract values from them. If the .DS_Store file is uploaded with the rest of …

NotSupportedException: Unable to determine the provider name for provider factory of type ‘MySql.Data.MySqlClient.MySqlClientFactory’. Make sure that the ADO.NET provider is installed or registered in the application config

In a two-tier web application, the data layer is in a separate project. This allows better separation between the presentation layer and the data layer. This way you can reuse the data project in another application that targets the same database. To access a MySql database you need to add the MySql.Data and MySql.Data.Entity NuGet packages to …

Configure the ASP.NET MVC 5 web application to use an external database for user authentication

When a new ASP.NET web application is created with the authentication set to Individual User Accounts, it automatically creates an SQL Express internal database in the App_Data directory of the application when you register the first user. To create the ASP.NET web application with user authentication see Create an ASP.NET Web Application with user authentication This is sufficient …

Create an ASP.NET MVC 5 Web Application with user authentication

To create a new ASP .NET MVC web application that contains user authentication code In the File menu of Visual Studio select New, Project… On the left select Visual C#, Web, and in the middle select ASP.NET Web Application (.NET Framework) Enter the Name, select the solution folder location and click OK. The solution name …

Flashing Side Marker Lamps

In the US it is not required to make the turn signals visible from the side of the vehicle. Many cars sold in the US have their front turn signals positioned between the headlights, so those are usually not visible from the side. If another car is next to yours, the other driver cannot see your …