Monitoring Tomcat via JMX–Lessons Learned: Part 1

Posted on by David Vassallo

Requirement : monitoring vital Tomcat statistics such as active & idle threads, memory consumption and so on. JMX (java monitoring extensions) is quite well documented – so a google search should bring you up to speed, but in a nutshell, JMX is almost like a java-centric SNMP. Java app developers can make certain attributes such … Continue reading Monitoring Tomcat via JMX–Lessons Learned: Part 1

Linux Mail Components

Posted on by David Vassallo

Drawing diagrams always helps visualize and understand concepts. While studying  for LPIC202 I came up with the following diagram to help understand a simple linux mail system. I say simple because the mailserver does not show ancillary functions such as AV scanning and spam filtering. Hope it helps! For a better, printable version, click here