I'm trying to ssh to 2 servers one by one and run the following command:
sudo node app.js
Here is my code:
#!/bin/bash
while read line; do
ssh -i "sshtest.pem" ec2-user@$line "sudo node app.js"
done < ips.txt
After sudo node app.js is executed the control doesn't pass over to the next ip in the loop. Can someone point me what I could do to improve this?
Try exiting after your ssh:
#!/bin/bash
COMMAND="sudo node app.js && exit"
PEM="sshtest.pem"
USER="ec2-user"
IN="ips.txt"
while read LINE; do
ssh -i $PEM $USER@$LINE $COMMAND
done < $IN
If you'd like rather not block, background each ssh:
#!/bin/bash
COMMAND="sudo node app.js && exit"
PEM="sshtest.pem"
USER="ec2-user"
IN="ips.txt"
while read LINE; do
ssh -i $PEM $USER@$LINE $COMMAND &
done < $IN
The biggest issue you're going to have is with sudo. Having to elevate privilege will require you to enter a password. This might help you re-design your approach.
