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This article will walk you through Installing and configuring the basic Ganglia (a scalable, distributed monitoring system for high-performance clusters) setup. it will also show you how to use the Python modules to extend functionality with IPMI, and how to use Ganglia host spoofing to monitor IPMI. The goal is not only to set up a Ganglia high-performance Linux cluster monitoring system, but also to add more monitoring capability by writing simple Ganglia plug-ins.

Make your desktop look awesome! We go over installing conky and basic configuration. My conkyrc file is provided with a screenshot

Learn how to reduce your power consumption in your Linux computers by monitoring application-usage patterns and user activity. After tuning your kernel, hdparm, ACPI, and CPU settings, discover how to add these application monitors to more effectively enter your low-power states. Also, find out how to use the focusTracker and kst visualizations to find gaps of inactivity, and create rules that can save you some green.

This chapter describes passive checks, using Nagios, in detail with practical examples of when and how they can be used. It also shows how to use NSCA (Nagios Service Check Acceptor)for sending notifications.

dnstop is a great tool when maintaining a DNS server. Log file can give out required information but dnstop is just like top command for monitoring dns traffic. It is a small tool to listen on device or to parse the file savefile and collect and print statistics on the local network's DNS traffic. You can see information about all DNS clients, DNS queries and much more with this tool.

This tutorial is for setting up a syslog server in FreeBSD and Linux. A syslog server is useful to log messages from different network devices or servers to a dedicated log server machine.

Discover a graphical LPAR monitor for the System p5 Server that allows the status of CPU and memory resources used by one or more LPARS to be monitored side by side. LPAR state information that can be monitored with this tool includes LPAR tracking, simultaneous multithreading state, and processor and memory use.

This tutorial is the second in a two-part series on locking your Linux machines down to streamline the associated support and administration processes. In Part 2 learn how to configure the Linux kernel to execute only signed binaries. In Part 1 you learned how to remove the interpreters from the installation base system to prevent spurious user changes.

It can be a headache. Import and export schemes, if they exist at all, are often too clunky and unsatisfactory to use even once, much less on a regular basis. Enter the Lightweight Directory Access Protocol. This tutorial shows you how to create an LDAP-based backend to store contact information that multiple applications can share easily.

No doubt that if you are working with large and medium sized servers and infrastructures, you have come across the need to collect logs and review or analyze them. With more servers the problem escalates as you have to log into every system to check the logs. It becomes very nice once you start having different systems that have different logging mechanisms. I touched the subject with my article on configuring splunk and snare for logging.

"Munin"� means "memory"�.Munin the tool surveys all your computers and remembers what it saw. It presents all the information in in graphs through a web interface. Its emphasis is on plug and play capabilities. After completing a installation a high number of monitoring plugins will be playing with no more effort. Using Munin you can easily monitor the performance of your computers, networks, SANs, and quite possibly applications as well. It makes it easy to determine "what"™s different today"� when a performance problem crops up. It makes it easy to see how you"™re doing capacity wise on all limited resources.

ZABBIX is a 24×7 monitoring solution without high cost.ZABBIX is software that monitors numerous parameters of a network and the health and integrity of servers. ZABBIX uses a flexible notification mechanism that allows users to configure e-mail based alerts for virtually any event. This allows a fast reaction to server problems. ZABBIX offers excellent reporting and data visualization features based on the stored data. This makes ZABBIX ideal for capacity planning.