Active Directory (AD) failure, which includes corruption, is something that is dreaded by any administrator. Simply put, it means that the directory service can no longer read the Active Directory database that it has locally. This will prevent logon and authentication as well as any directory-dependent services. Essentially, it renders the domain controller (DC) useless. What's worse, though, is that several times, the replication keeps going so that the corrupted database spreads out to the other DCs.
In this article by Florian Rommel, we will look at the different options and approaches available to recover a DC that has a database corruption. In addition, this article outlines, symptoms, causes, and solutions for this scenario.Read How to Recover from an Active Directory Failure in full
So far, the general approach towards SOA has been that it is just a tidying-up of application integration. SOA, according to this approach, is not about building new a business functionality but about organizing existing systems. In this article by Michael Havey, we will see that, in reality, SOA is more than merely getting organized. Its principal mandate is to build something new; indeed, SOA is fundamentally about building new processes. We will consider an approach to SOA architecture that is, yes, methodical, but has the burden of actually designing new and challenging orchestration and ESB processes.
In this article, we will build examples of choreography and orchestration, study best practices for message handling in orchestration processes, and develop fundamental orchestration concepts, such as interaction, invisible hub, and deferred choice.Read Modeling Orchestration and Choreography in Service Oriented Architecture in full
In this article by Alex Buchner, you would learn how to customize the front page of your Moodle site. Before taking an insight into this, let's first take a general overview of Moodle's look and feel elements.Read Front Page Customization in Moodle in full
In this article by Ankur Shah, you will see how to manage multiple printers at a time. Unlike other printing systems, CUPS features a way to let you select a group of printers to print a job instead of selecting just one. In that way, if one printer is busy or down, another printer can be automatically selected to perform the job. Such groupings of printers are called printer classes.Read CUPS: How to Manage Multiple Printers in full
Security is a wide ranging topic which operates on many levels and covers many technologies. The technologies involved include networks, operating systems, database systems, and application servers as well as manual procedures.
Application level security in the context of Java EE applications is provided by web and EJB containers. This article by Michael Sikora will be mostly concerned with EJB container security. However, as EJBs are often invoked from the web-tier we will take a brief look at web container security later in this article.
We will cover the following topics:
- Java EE container security