Ubuntu gets stuck in a login loop

When I rebooted my Ubuntu machine it started to repeatedly ask for the password. When I entered the correct password, the screen went black and asked for the password again. The problem was an error in the ~/.profile file. To log into the Ubuntu terminal Press the Ctrl-Alt-F3 key combination Enter the username Enter the password […]

DevOps Engineering part 1. (Ubuntu) – Install the DevOps development tools on Ubuntu

DevOps Software installation on Ubuntu There are multiple ways to install software on Ubuntu Install a .deb package from the local drive with dpkg Install the software from the internet with apt Show hidden files To be able to see hidden files in Files Start Files, In the Edit menu select Preferences, On the Views tab check […]

Configure the Ubuntu virtual machine in VirtualBox

Enable shared folders on the virtual machines To be able to use shared folders between the host ( your workstation ) and the virtual machine. Start the Ubuntu virtual machine in Virtual Box, Select the virtual machine window on your workstation, In the Devices menu of Virtual Box select Insert Guest Additions CD image… Click the Run button, […]

Configure the Windows virtual machine in VirtualBox

Enable shared folders on the virtual machine To be able to use shared folders between the host ( your workstation ) and the Windows virtual machine. Start the Windows virtual machine in VirtualBox, Select the virtual machine window on your workstation, In the Devices menu of VirtualBox select Insert Guest Additions CD image… In the virtual machine start Windows Explorer, […]

VirtualBox installation and configuration on Windows

Download Virtual Box from https://www.virtualbox.org/wiki/Downloads and follow the instructions to install it. At the time of writing this was the section where the installer files were referenced Run the downloaded installer file and accept all default values. The installer starts the Virtual Box application.You can close it, we will use other tools to start it in the future. […]

VirtualBox installation and configuration on Macintosh

Download VirtualBox from https://www.virtualbox.org/wiki/Downloads and follow the instructions to install it. At the time of writing, this was the section where the installer files were referenced Run the downloaded installer file and accept all default values. The installer starts the application.   Create a virtual machine To create a new virtual machine Download the OS image from the […]

CloudExceptions::CloudException – 400: VPCIdNotSpecified: No default VPC for this user

When you launch a new EC2 instance in the AWS cloud from the command line or with other cloud management platforms, you may get the error message: CloudExceptions::CloudException – 400: VPCIdNotSpecified: No default VPC for this user (RequestID: …) This can happen when the specified Subnet Id is not a valid subnet in the selected […]

Create the AWS credentials file from a Chef Data Bag

When a process on a server instance needs access to an AWS account, the user who will execute the AWS CLI commands needs to be able to automatically authenticate in AWS. For automatic AWS authentication, the AWS CLI creates two files in the .aws directory: config and credentials. The location of this directory depends on the […]

Setup failed: Failed to copy slug dir: lstat /Users: no such file or directory error in Terraform Enterprise

When you try to execute a Terraform configuration in Terraform Enterprise (Atlas) you may get the error message: Setup failed: Failed to copy slug dir: lstat /Users: no such file or directory Cause: The Git repository contains the .terraform/modules directory, and the Terraform Enterprise server cannot get the latest modules from GitHub. Solution: Create a .gitignore file […]