Start-up script for an installed Apache Storm Cluster

If you have installed a Storm cluster using my shell scripts in the previous blogs or even otherwise, this script will save you from manually visiting each node and starting the appropriate service(nimbus/supervisor/ui) there. All you have to do is grab a remote machine and run the script. The script will ask for the required information and your cluster would be up. Also, the script should work equally fine for both Ubuntu and CentOS.

#!/bin/bash # Directory Name echo "Enter the relative path to the storm setup on the machines (For example, /opt/stormSetup/storm-0.9.0-wip4):" read -e stormDir # Read usernames and ips of all the storm cluster nodes echo "Enter the IP of nimbus machine :" read -e stormNimbus; clusterMachineIPs[0]=$stormNimbus echo "Enter the username of nimbus :" read -e usernameNimbus clusterMachineUsernames[0]=$usernameNimbus # Read supervisor echo "Enter the number of supervisor machines"; read -e n; for ((  i = 1 ;  i <= n;  i++  )) do echo "Enter the IP of storm supervisor machine $i:" read -e stormSupervisor; clusterMachineIPs[i]=$stormSupervisor echo "Enter the username of machine ${clusterMachineIPs[i]}" read -e username clusterMachineUsernames[i]=$username done sshpass -p root ssh -o StrictHostKeyChecking=no  $usernameNimbus@$stormNimbus $stormDir/bin/storm nimbus& # Start the supervisor nodes for ((  i = 1 ;  i <= n;  i++  )) do sshpass -p root ssh -o StrictHostKeyChecking=no  ${clusterMachineUsernames[i]}@${clusterMachineIPs[i]} $stormDir/bin/storm supervisor& done # Start the UI on the nimbus machine sshpass -p root ssh -o StrictHostKeyChecking=no  $usernameNimbus@$stormNimbus $stormDir/bin/storm ui&

Visit your UI on the browser after a few minutes. Hope it shows up fine. Cheers!