Executing command on remote host, remote monitoring unix/Linux flavour

I was given some exercise on remote monitoring. Here is how I cracked the same. I have splited the task into 2 parts. 1) Executing a command on remote host 2) Run vmstat in remote host and collect performance statistics.

Steps for Executing the command on remote host

1. Create/update .netrc file in user home directory and add credentials of all the machines that we need to be accessed remotely. Format should be as follows: machine  login  password 
2. Execute “chmod 600 .netrc” so that only owner will have read/write access.
3. To execute the command on remote host use the following command:rexec   

Few examples for remote monitoring

HP Unix:

rexec remote_hp_ux_host vmstat 1 2 | tail -1 | awk '{print "Load Average : "$1"\nFree Mem :"$5"\nUser CPU : "$16"\nSystem CPU : "$17"\nIdle : "$18}'

 

AIX:

Rexec remote_aix_host vmstat 1 2 | awk -v  psize="`pagesize`" '{if (NR ==2) print "Total "$4"\nPage Size : " psize}{if (NR == 8) print "Free list sz: "$4"\nUser CPU   : "$14"\nSystem CPU : "$15"\nIdle       : "$16"\nIO Wait    : "$17}'

Rest of Flavours:

Give a try and send me a feed back.

Remote monitoring Linux/unix servers from linux/unix server

Steps for Executing the command on remote host

1. Create/update .netrc file in user home directory and add credentials of all the machines that we need to be accessed remotely. Format should be as follows

machine login password

 

2. Execute “chmod 600 .netrc” so that only owner will have read/write access.
3. To execute the command on remote host use the following command

rexec

To remote monitor

rexec remotehost vmstat 1 10