In previous article of this miniseries we showed how to dramatically speed up Nagios by putting the spool directory into RAMdisk. Today we are going to look at speeding up the very basic check of every host. Like the previous improvement, this came up from real need to eliminate false-positives …
Some RouterBOARD devices (those with “P” in the model name) have the ability to power devices through Power-over-Ethernet (PoE for short). It is a very useful thing, especially after the PoE firmware upgrade to the latest version (currently 2.1), which increases the current limit for the device and port, adds …
If we are taking the networking seriously, we have to monitor its status and health of its services. In small networks with number of devices in tens is the whole issue quite simple and the default configuration is sufficient. But what if the network has “grown a little bit” to …