Installing Nagios (16 tags)
Nagios is a system and network monitoring application. It watches hosts and services that you specify, alerting you when things go bad and when they get better.
Monitoring Network Traffic with Netflow (9 tags)
SNMP and MTRG can tell you what your network is doing, but they don't always give you the details you need. Netflow does--but it has a complex setup and configuration. Fortunately, Michael W. Lucas shows how to install and configure modern versions.
Visualizing Network Traffic with Netflow and FlowScan (5 tags)
SNMP and MTRG can tell you what your network is doing, but they don't always give you the details you need. Netflow does--but sometimes a pretty graph says more than thousands of lines of log output. Fortunately, Michael W. Lucas shows how to use FlowScan and CUFlow with Netflow to see the traffic on your network.
Enterprise-Wide Network Management with OpenNMS (4 tags)
Network management of more than a few devices is difficult, and many vendors have expensive, complicated software that mostly does the job. Fortunately, open source has a viable alternative in OpenNMS. Tarus Balog shows how the extensible and configurable software can simplify your life.
Monitoring Local and Remote Applications Using JMX 1.2 and JConsole (2 tags)
The latest release of Java, J2SE 5.0 (codenamed Tiger), formally adds support for the Java Management Extensions (JMX) 1.2. Russ Miles walks you through how to use the JMX support in J2SE 5.0, including the new JConsole application, to monitor and manage your own applications both locally and remotely.