Feature Want: Can we have a config to exit the application when fail to connect to loki service

[wusunny2022]

Description
It will be handy if we can get notice in the log that we failed to connect to the loki service.

Feature want
By default: maybe we just warn in the console, will not affect the application start up
Change the level: throw an exception so that the application fail to start up

[tkowalcz]

Thanks for your suggestions. This sounds reasonable. I'll try to address this.