I am running R on EC2 spot instances and I need R to terminate the instance and cancel the spot request once the script has run.
For that I have set the "Request ID" into an environmental variable in /.bashrc and my plan was to simply call the following code into R once the script is ready
The issue I am having is that R is not "seeing" the same environmental variables I seen when I type env from outside R thus the command is not working.
I have checked and if I set my environmental variables at /etc/environment R is able to see those variables, but here is the other problem. As those variables are dynamic (the instance ID and the request ID is different each time a spot instance is created), I am running a script to create them in the form of:
export SIR=`cat /etc/ec2_instance_spot_id.txt`
Where that file contains the dynamic ID
So, how can I insert "dynamic" environmental variables into /etc/environment ? Or, how can I make R read the environmental variables at /.bashrc?
Any tip in the right direction will be much appreciated!