title: grpc Logger level
body: <p>I have an application (Java), which is depending heavily on grpc to communicate between different microservices. The problem is that in a cloud environment the calling services very often do not reach their target services. 
  In order to resolve our issues we want to have better debugging information from grpc. </p>
  
  <p>At the moment we are getting very coarse logging infos from grpc, and we would like to see logging info on the socket level (ex. "talking to socket x ...."). 
  How can we change the logger level for grpc? Throughout the system we are using <strong>slf4j</strong> for logging purposes and our netty-logging.properties has logging-level at <strong>INFO.</strong></p>
  
  <p>What would be a good level? (we are thinking <strong>TRACE</strong>) and should we <strong>programmatically</strong> change the level with each grpc call or rather within a <strong>config file</strong>?(What would this file look like?)</p>