ec2 run scripts every boot

Question

I have followed a few posts on here trying to run either a python or shell script on my ec2 instance after every boot not just the first boot.

I have tried the:

[scripts-user, always] to /etc/cloud/cloud.cfg file

• Added script to ./scripts/per-boot folder

and

adding script to /etc/rc.local

• Yes the permissions were changed to 755 for /etc/rc.local

I am attempting to pipe the output of the file into a file located in the /home/ubuntu/ directory and the file does not contain anything after boot.

If I run the scripts (.sh or .py) manually they work.

Any suggestions or request for additional info to help?

Answer 1

So the current solution appears to be a method I wrote off in my initial question post as I may have not performed the setup exactly as outline in the link below...

This link --> How do I make cloud-init startup scripts run every time my EC2 instance boots?

The link shows how to modify the /etc/cloud/cloud.cfg file to update scripts-user to [scripts-user, always]

Also that link says to add your *.sh file to /var/lib/cloud/scripts/per-boot directory.

Once you reboot your system your script should have executed and you can verify this in: sudo cat /var/log/cloud-init.log

if your script still fails to execute try to erase the instance state of your server with the following command: sudo rm -rf /var/lib/cloud/instance/*

--NOTE:-- It appears print commands from a python script do not pipe (>>) as expected but echo commands pipe easily

Fails to pipe sudo python test.py >> log.txt

Pipes successfully echo "HI" >> log.txt

Answer 2

I read that the use of rc.local is getting deprecated. One thing to try is a line in /etc/crontab like this:

@reboot full-path-of-script

If there's a specific user you want to run the script as, you can list it after @reboot.

Answer 3

Is this something along the lines that you want?

It copies the script to the instance, connects to the instance, and runs the script right away.

ec2 scp ~/path_to_script.py : instance_name -y && ec2 ssh instance_name -yc "python script_name.py" 1>/dev/null