Integrating Linux in a predominantly Windows environment at a local University can be challenging on many fronts. The biggest challenges are often lack of expertise from administrators, and proper support in Active Directory like installing Services for Unix (SFU) integration or including a standards-based LDAP schema for typical UNIX user and group attributes. Like most products from Microsoft, Active Directory, which is just another LDAP implementation, was designed to support Windows clients. Consideration for making it a compatible solution for Unix was an afterthought
Sometimes your system refuses to boot properly. Even recovery mode selection from the command line prompt is not very helpful. Here is a good technique to boot your Linux system into single user mode. Single user mode is great for password recovery tasks and other tasks that may not work in recovery mode.
Even Linux is subject to system freezes. Problems with defective hardware, or a pesky bug in the Linux kernel itself can leave your system in a frozen state and unresponsive to key board commands. Even the three fingure salute, ctrl + alt + delete are ineffective. Hitting the power button should always be your last resort, and just be aware you could boot back up with a lengthy fsck or even worse, a system that must be recovered from backup.
Have you ever had different versions of the same library or two compilers on the same system and find managing mutliple environments cumbersome. Environment modules provides an excellent method to customize your shell environment, especially on the fly. This tool is commonly used in High Performance Computing environments which often contain many different types of Message Passing Interface Libraries, compilers and dependencies.&
We all respect Redhat's goal of providing a stable operating system to its customers, the stability often comes at price. Often in the form of missing features that are available in the more recent releases of many packages. One such product has always been OpenLDAP.
Ganglia is a scalable distributed monitoring system for high-performance computing systems such as clusters and Grids. It is based on a hierarchical design targeted at federations of clusters. It leverages widely used technologies such as XML for data representation, XDR for compact, portable data transport, and RRDtool for data storage and visualization.