Using greengrass-cli logs command from within a component

Question

Setup details:

Greengrass V2 on ubuntu 18.04
GG Nucleus 2.9.2 with json logs, and GG Cli Deployed (2.9.2, with config "AuthorizedPosixGroups": "ggc_group")

I would like to be able to check a greengrass component's logs from within a greengrass component. I am already successfully using the greengrass-cli from one component to restart another.

Is it possible to run:
```
/greengrass/v2/bin/greengrass-cli logs get --verbose \
    --log-file /greengrass/v2/logs/.log \
    --time-window -10sec
```

from another component ? When i run that, I get the error: Cannot find file: /greengrass/v2/logs/.log''.

Does the logfile itself have to be readable by the ggc_user in order to use the logs command on it ?

Accepted Answer

That log directory is only readable by root by default. `ggc_user` won't be able to access it. You would need to run your component as root as well. Standard disclaimer: please understand the security implications if you choose to go that route. I would not recommend it.

Alternatively, you could configure the other component to log directly to a readable directory, rather than printing to stdout and having Nucleus write the logs to disk. Is this an option for you?

Using greengrass-cli logs command from within a component

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