Greengrass doesn't run on Yocto scarthgap due to no execute permissions on ${GG_BASENAME}/alts/current/distro/bin/loader

[jrdeck]

On a fresh build of Yocto scarthgap, using the poky reference distro, Greengrass wouldn't run. It didn't create the logs folder, which made troubleshooting slightly challenging.

Manually chmoding the /greengrass directly to 755 solved the problem. In further troubleshooting, I resolved the issue by changing line 82 in greengrass-bin_2.14.0.bb from:

install -m 0640 ${S}/bin/loader ${GG_ROOT}/packages/artifacts-unarchived/aws.greengrass.Nucleus/${PV}/aws.greengrass.nucleus/bin/loader

to:

install -m 0750 ${S}/bin/loader ${GG_ROOT}/packages/artifacts-unarchived/aws.greengrass.Nucleus/${PV}/aws.greengrass.nucleus/bin/loader

[thomas-roos]

Hi James,
thanks a lot for this - while still investigating the correct solution - if you use the installer file permissions will also 640 during installation and then changed to 755 - my guess (that I figure out now) during start of the loader.
I was using systemd before, so my guess is you do not use it. Here are some demo image that use poky-altcfg distro, systemd: https://github.com/aws4embeddedlinux/meta-aws-demos/blob/e362dcb0115b31d6e9f8344a53fc71fb072db727/meta-aws-demos/recipes-core/images/aws-iot-greengrass-demo-simple-image/config.conf#L1
Coming back with the correct solution, but might - because of xmas vacation - will take some time.