Odd Tools and Techniques for System Administrators [closed]
iPerf
Iperf helps you run tests that measure maximum TCP and UDP bandwidth performance. It allows the tuning of various parameters and UDP characteristics reporting bandwidth, delay jitter, datagram loss: http://openmaniak.com/iperf.php,And
MTR
MTR (My Trace Route) is also a pretty good tool. It combines the functionality of the 'traceroute' and 'ping' programs in a single network diagnostic tool. Like traceroute except it gives more network quality and network diagnostic info. Leave running to get real time stats. Reports best and worst round trip times in milliseconds... It shows latency, jitter (average/best/worst): http://www.bitwizard.nl/mtr/
use:
mtr server.domain.com (or IP)
- Add more fields with "O", type "LDRS NBAW V JMXI" and hit ENTER
- Type "n" to toggle DNS Off/On
alt text http://locobox.googlepages.com/mtrsavedw.jpg
Paperclips: I've had to use paperclips to pick the locks on the front of a sun and dell server We've all used them to open a cd rom
HotPlug This thing is awesome. Want to move a server to the next rack over without turning it off? http://www.wiebetech.com/products/HotPlug.php
Blocks of wood The idiot before you not mount the server properly? The server too old to have rack mounts? Blocks of wood are your friend. It's ghetto, but works.