How to enable the fluent-bit debug logging in the Terraform Enterprise

Intro

This KB is dedicated to lift log level of the fluent-bit logging container.

Problem description

Some logging setups doesn't work as expected and switching log level to the debug temporary may be necessary. 

Solution

Copy the fluent-bit.conf from the fluent-bit container to the local folder

sudo docker cp tfe-fluent-bit:/fluent-bit/etc/fluent-bit.conf ./ 

Update the local file fluent-bit.conf - add Log_Level debug.

Example of the configuration file:

[SERVICE]
    Parsers_File    /fluent-bit/etc/parsers.conf
    HTTP_Server     On
    HTTP_Listen     0.0.0.0
    HTTP_Port       2020
    Health_Check    On
    storage.path    /fluent-bit/run/buffer
    storage.metrics on
    Log_Level       debug

Copy the file to Fluent Bit container

sudo docker cp fluent-bit.conf tfe-fluent-bit:/tmp/fluent-bit.conf

Copy the file in the container from /tmp to the original location

sudo docker exec -it tfe-fluent-bit cp /tmp/fluent-bit.conf /fluent-bit/etc/fluent-bit.conf

Restart the tfe-fluent-bit container

sudo docker restart tfe-fluent-bit

Confirm the debug mode is On

sudo docker logs tfe-fluent-bit