Core as Cloud9 Instance - Problem with v2.x

Question

Hello,  
  
I am working through the Getting Started tutorial, except I am using a Cloud 9 instance rather than a Rasberry Pi as my GGCore. I can attach the recipe and artifacts just fine, but when attempting to run artifacts/com.example.HelloWorld/1.0.0/hello_world.py, it comes up with a permissions error. When looking at com.example.HelloWorld.log, I view the following error:  
  
2020-12-18T17:26:38.435Z \[WARN] (Copier) com.example.HelloWorld: stderr. Sorry, user root is not allowed to execute '/bin/sh -c python3 /greengrass/v2/packages/artifacts/com.example.HelloWorld/1.0.0/hello_world.py 'world'. {scriptName=services.com.example.HelloWorld.lifecycle.Run, serviceName=com.example.HelloWorld, currentState=RUNNING}  
  
I also see this error on greengrass.log:  
  
2020-12-18T17:27:09.606Z \[ERROR] (com.example.HelloWorld-lifecycle) com.aws.greengrass.lifecyclemanager.GenericExternalService: service-broken. service is broken. Deployment is needed. {serviceName=com.example.HelloWorld, currentState=BROKEN}  
2020-12-18T17:27:09.619Z \[INFO] (Thread-5) software.amazon.awssdk.eventstreamrpc.RpcServer: Server connection closed code \[socket is closed.]: \[Id 29, Class ServerConnection, Refs 1](2020-12-18T17:27:09.436Z) - . {}  
  
How can this be fixed?  
  
Edited by: rakibk on Dec 18, 2020 9:47 AM

Accepted Answer

Hi, I tried Greengrass v2 on cloud 9 and here's what worked for me: I made sure that my etc/sudoers file had root with ALL:ALL permissions, as it says in the requirements:  . I installed greengrass in the root directory so as to not have permissions issues with ec2-user directory. I changed the permissions on the greengrass folder to chmod 755, because I saw in a github commit that they needed to be 755 instead of what they are now. Then it worked for me, running on the greengrass core.

Answer

Hi rakibk,  
  
Thanks for using Greengrass!   
  
I have a few questions about your setup.  
1. Did you specify `--component-default-user ggc_user:ggc_group` in the installer command? Did you change the posix user of the HelloWorld component?  
1. Can you check the permission of file `/greengrass/v2/packages/artifacts/com.example.HelloWorld/1.0.0/hello_world.py`?  
1. Are you able to run `sudo -u ggc_user echo hello` on the Cloud9 instance?

Answer

Hello!  
  
1. Yes I put that exact command as stated in the tutorial process. I did not change the ggc_user:ggc_group  
2. This the permissions I get for the file that you specified:  
  
-rwxr-xr-- 1 ggc_user ggc_group 277 Dec 18 20:16 hello_world.py  
  
2. Yes, it outputs 'hello' without issue

Core as Cloud9 Instance - Problem with v2.x

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