How to Get Info About All the Nodes in the Network via SSH ?

Logic: 1. Checking if the host is alive. 2. Getting info about them, via remote commands.

Steps: 1. Prepare password free SSH access. 2. Make a simple script to get host info.

Prepare password free SSH access: $ssh-copy-id user@host or cat ~/.ssh/id_dsa.pub | ssh user@remotehost ‘cat >> ~/.ssh/authorized_keys

Make a simple script to get host info: Step 1. Get the local ip say for eth0. Step 2. Loop the range of ip and check if the host is alive. Step 3. Use ssh to getinfo from /proc

Code “

!/bin/bash

user=root getNodeinfo() {

Get the ip address for the range

ip=$(/sbin/ifconfig eth0 | grep ‘inet addr:’ | cut -d: -f2 | awk ’{ print $1}’ | cut -d”.” -f1,2,3)

ping test and list the hosts and echo the info

for range in $ip ; do ping -c 1 -w 1 $ip > /dev/null 2> /dev/null >> /tmp/pinglog &&[ $? -eq 0 ] ; echo “Node $range is up” && echo “More info about the machine” ; echo “Kernel:$(ssh $user@$range cat /proc/version)” && echo “CPU info:$(ssh $user@$range cat /proc/cpuinfo )” && echo “Mem info:$(ssh $user@$range cat /proc/meminfo)” && echo “Release:$(ssh $user@$range lsb_release -a)” done } Got better method? Give your idea