Greengrass on Ubuntu Core (Classic mode)

Question

I have a Dell Gateway 3001 device and I am trying to get Greengrass Core running.  
The device has Ubuntu Core with snap package management and unfortunately in snapcraft store there's only 1.8.0 version of Greengrass available and I want 1.9.0 that suppots Node.js Lambdas.  
  
I am trying to get the 1.9.0 version working inside "classic mode" which I installed from snap store with **sudo snap install classic --devmode --edge** and then entering in the classic with **sudo classic**.  
  
I am running into problems in classic mode, when trying to run command: **sudo modprobe configs**  
I get an error:  
modprobe: ERROR: ../libkmod/libkmod.c:586 kmod_search_moddep() could not open moddep file '/lib/modules/4.4.0-151-generic/modules.dep.bin'  
modprobe: FATAL: Module configs not found in directory /lib/modules/4.4.0-151-generic  
  
The directory /lib/modules/ is empty in classic mode, since the classic is actually a snap running in a "sandbox" if I understand correctly.   
  
Any advice how to get around this or in general how to get Greengrass 1.9.0 running in Ubuntu Core?

Answer

Thanks Jips71! The Greengrass team is still actively working on updating the Snap.  
  
Thanks,  
KR-AWS

Answer

Hi  
  
The AWS team is working on a new version of the snap but hasn't communicated a release date, yet. See this thread   
  
**joeb-at-aws** suggested the following strategy:  
  
> In the meantime, your team may be able to use the Greengrass docker container with the Docker snap to avoid the need for manual install. Would that be a viable option?

Answer

Hi why do you need to change /etc/sysctl.conf ? For hardlink and symlink?  
  
You can start greengrass with greengrassd -i start, it does not require enabling hardlink protection

Answer

Thanks for the reply. I am now trying to install dockerized version of Greengrass to Ubuntu Core.  
  
I am now facing some new issues. Because Ubuntu Cores file system is read-only, I am not able to edit for example _/etc/sysctl.conf_ as needed.   
  
Any ideas how to advance?  
  
Edited by: Mulperi on Jun 25, 2019 4:31 AM

Answer

This AWS Online Tech Talks video on Youtube may be helpful.  
> How to Deploy AWS IoT Greengrass Using Docker Containers and Ubuntu Snap  
>

Greengrass on Ubuntu Core (Classic mode)

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