Running R on AWS troubleshooting.

Question

I have tried following the instructions here to set up RStudio Server on AWS, but I can't connect to RStudio in my browser (Firefox says it is "unable to connect"). Strangely, I can connect to shiny server, although the shiny apps don't load.  
  
One specific question I have is why are the lines  
rm rstudio-server-rhel-1.0.153-x86_64.rpm  
and  
rm shiny-server-1.5.4.869-rh5-x86_64.rpm  
included in the install script? Doesn't this remove the packages?  
  
I've tried troubleshooting this for a while, but haven't made any progress. Any suggestions would be appreciated!

Answer

Figured it out.   
  
rm lines were to remove package installers only. Needed to use "sudo amazon-linux-extras install R4" instead of "yum install -y R". To properly install R on the new AMIs.

Running R on AWS troubleshooting.

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