nagios for killer basic monitoring, Zenoss if you need even more.<br><br>Other things to look at are intrusion detection systems. In the RHEL/Fedora/CentOS world is a tool called aide (opensource replacement for tripwire) and for all distros is a fantastic tool called samhain (pronounced sow-when - it's Gaelic).<br>
<br>Basic admin stuff like check installed package validity is a great first step. In rpm-land, running rpm -Va will test all packages and report on how things have changed since they were installed (changed config, changed binaries, wrong MD5 sum, changed permissions, etc). I'm clueless on how to replicate the same functionality with debs.<br>
<br><div class="gmail_quote">On Fri, May 13, 2011 at 3:51 PM, Omar Chanouha <span dir="ltr"><<a href="mailto:ofosho@gatech.edu">ofosho@gatech.edu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
Hello Everyone,<br>
<br>
I have 2 ubuntu servers that I maintain at work. I would like some<br>
way to be able to monitor them in order to detect intruders.<br>
Specifically things like CPU usage, RAM usage, HD usage, currently<br>
logged in users, running processes and IP connections. There seems to<br>
be a lot of options out there, but I am wondering what the people on<br>
this list use/would recommend because I know many on this list are<br>
seasoned sys admins. Command line tools are just as welcome as GUI<br>
apps, as long as they get the job done.<br>
<br>
Thanks,<br>
<br>
-O<br>
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</blockquote></div><br><br clear="all"><br>-- <br>-- <br>James P. Kinney III<br><br>As long as the general population is passive, apathetic, diverted to
consumerism or hatred of the vulnerable, then the powerful can do as
they please, and those who survive will be left to contemplate the
outcome.<br>- <i><i><i><i>2011 Noam Chomsky</i></i></i></i><br>