I have built a Docker container with a Go application that used the Go AWS SDK. When my program tried to access an S3 bucket I got the error message RequestError: send request failedcaused by: Get https://MY_BUCKET_NAME.s3.amazonaws.com: x509: certificate signed by unknown authority To solve the problem I had to add the following line to […]
Category Archives: Not for home page
Docker for Windows cannot start: “Hardware assisted virtualization and data execution protection must be enabled in the BIOS”
To start Docker on Windows, Hyper-V and the Hypervisor has to be enabled on Windows. Start a PowerShell window as administrator Enable Hyper-V dism.exe /Online /Enable-Feature:Microsoft-Hyper-V /All Enable the Hypervisor bcdedit /set hypervisorlaunchtype auto Restart the computer
List the Active Directory groups the user is a member of
To list the Active Directory groups where the current user is a member, execute in the PowerShell window To get the Active Directory groups for another user, replace THE_USER_NAME with the Active directory user name of the person. (New-Object System.DirectoryServices.DirectorySearcher(“(&(objectCategory=User)(samAccountName=THE_USER_NAME))”)).FindOne().GetDirectoryEntry().memberOf
Debugging Go programs in Atom
To be able to debug Go programs in Atom, make sure the Go IDE is installed. See Install the Go IDE at Install and set up Go To start debugging select the Debugger tab in the upper right corner of Atom If you get the error message: The debugger is not attached, and when you click Attach debugger […]
Using Go packages
To use a public package in your Go application add the line to the top of your program to import the package import “github.com/aws/aws-sdk-go/service/s3″ If this is the first time you are using the package, the error message appears in the output window of Atom when you save the file cannot find package “github.com/aws/aws-sdk-go/service/s3” in […]
Your first Go application
Programming in GO is quick and fun. You can write a working, compiled application with a few lines of code. Write your first Go application Create a directory of your application, let’s call it my-app Open a terminal window in the my-app directory To create two sub-directories, execute mkdir cmdmkdir pkg Start the Atom text editor […]
Set directory access in Windows
When you use SetAccessRule() to set access rights on a Windows directory, the user who will get the permission has to be a member of the Administrators group. If the user is not a member of the Administrators group PowerShell shows the error message Exception calling “SetAccessRule” with “1” argument(s): “Some or all identity references could not be […]
Go language notes
Differences between Go and the “C” type languages Variable declaration int i; // C#var i int = 5 // Goi := 5 // Go Function declaration private int AddNumbers (int a, int b) {…} // C#func addNumbers(a int, b int) int {…} // Go Loops for for (int i = 0; i < 5; i++) […]
Install and set up Go
Set up the Go development environment Install Git For Mac see Install Git on Macintosh For Windows see Install Git on Windows Install the Go Programming Language Download the Go distribution from The Go Programming Language page and follow the installation instructions. Test the Go installation Open a new terminal window, so the new PATH settings are imported, […]
Install Git on Macintosh
Navigate to https://git-scm.com/download/mac to download Git for the Macintosh. The page automatically downloads the installer for the operating system you use. This app is not trusted by Apple, so to install it Control-click (right-click) the downloaded file and select Open Click the Open button to confirm the action Configure Git To configure Git see Git configuration.