Here is an example of how I monitor 5 nodes in a cluster with a minimum of effort using screen:
Put the following content in a file called screenrc-5nodes:
startup_message off defwrap off split split split split screen -t node01 1 ssh -t 172.17.0.211 'dstat -cdnyp --tcp --udp -l -D lores,hires -N bond0,eth0,eth2,eth3 10' focus down screen -t node02 2 ssh -t 172.17.0.212 'dstat -cdnyp --tcp --udp -l -D lores,hires -N bond0,eth0,eth2,eth3 10' focus down screen -t node03 3 ssh -t 172.17.0.213 'dstat -cdnyp --tcp --udp -l -D lores,hires -N bond0,eth0,eth2,eth3 10' focus down screen -t node04 4 ssh -t 172.17.0.214 'dstat -cdnyp --tcp --udp -l -D lores,hires -N bond0,eth0,eth2,eth3 10' focus down screen -t node05 5 ssh -t 172.17.0.215 'dstat -cdnyp --tcp --udp -l -D lores,hires -N bond0,eth0,eth2,eth3 10'
Then set the environment variable to tell screen to use this config-file for the next screen.
SCREENRC='screenrc-5nodes' screen
If you want to get out of this screen and end all dstats, the easiest way is to kill first all regions and then end each dstat. You can do this by:
ctrl-a X
Do that 5 times, and then quit each dstat by pressing:
ctrl-c
5 times.
If you have other tips or hints, please send them to: <dag@wieers.com>
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Please send me improvements to this document. |