The purpose of this article is to demonstrate how to add an ssh key to an existing ec2 instance. If you are reading this then you have likely created an ec2 instance but cannot access it remotely except through the AWS console. It's important to always have a way to ssh into your ec2 instances … [Read more...] about ssh ec2 instance – How to add an ssh key
Java encryption – Encryption with Java
Java encryption can be achieved in many different ways and methods and also with third party libraries and dependencies. This article will attempt to dive in a few of these areas, and will hopefully increase your knowledge of encryption with java. The examples are all at our github repo. … [Read more...] about Java encryption – Encryption with Java
ldapsearch Active Directory
The purpose of this article is to demonstrate how to use ldapsearch with Active Directory. Microsoft's Active Directory is an Ldap implementation running on domain services in a Microsoft environment. This article is geared towards directory administrators coming from a Linux environment using … [Read more...] about ldapsearch Active Directory
Upgrade Ubuntu 18.04 to 20.04
This article will demonstrate how to upgrade Ubuntu 18.04 to 20.04. We recommend always staying up to date to the latest LTS (Long Term Support) version of Ubuntu and this article assumes the intermediary releases were skipped. As soon as a new LTS version is made available to you in your package … [Read more...] about Upgrade Ubuntu 18.04 to 20.04
Ubuntu Time Settings
This article will demonstrate how to manage Ubuntu time settings. The examples provided in this article were completed with Ubuntu 20.04.4 LTS, but should work for any recent version of Ubuntu. If not, leave us a comment and we will update accordingly. To check your version of Ubuntu, run the … [Read more...] about Ubuntu Time Settings
curl authentication – Certificate, Bearer token, and Basic Auth
The following examples will go through how to use curl with authentication. For obvious reasons, public APIs do not require authentication but private APIs will require authentication using authorization headers with basic auth, a bearer token header using a JWT (Javascript Web Token) or some other … [Read more...] about curl authentication – Certificate, Bearer token, and Basic Auth
Docker container keeps restarting
The purpose of this article is to detail how to recover from a docker container that keeps restarting. So, you have built a new docker container and are attempting to run it. The container builds just fine, but you notice that on startup it isn't available. You decide to run the following command … [Read more...] about Docker container keeps restarting
Java Invalid Signature File
The purpose of this article is to explain the Java Invalid Signature File error you may encounter when running a java jar file. When building a jar file that contains other jar files with standard build tools you should not encounter this error. However, you may encounter the error when using the … [Read more...] about Java Invalid Signature File