New to Greengrass and have a few general queries related to it.


Have faced the following 3 issues in the past few weeks

-->> My colleague stated that his deployment fails with error stating “Group definition is not valid”? I couldn't find anything in the GG troubleshooting document about the error.

-->> I updated my group definition and added Lambdas to it but I don’t see that reflected on the device. Do the changes take place upon rebooting device ? is the deployment failed ? or the change made on cloud but never made to the device.

-->> In the beginning I couldn't find error logs in my Green grass local machine, neither CloudWatch

Thanks Community, looking forward to exploring GG.


  • Hi Joan, It looks like you are using Greengrass v1. Greengrass v1 is in maintenance mode. We highly recommend using greengrass v2 Thanks, Vidish

  • Hello @Vidishataws yes we are on track to upgrade to V2 but can you please let us know the cause of the following issues mentioned above ?

  • Hi Joan, Can you share the following details:

    1. Greengrass version
    2. Steps your colleague followed to get "Group definition is not valid".
    3. Did you make a deployment with the lambdas?
    4. You should be able to find logs in the <greengrass-root>/var/log directory. If you wish to upload logs to cloudwatch, you will have to configure the logger as shown here
asked 7 months ago31 views
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