| # Debugging |
| |
| Currently, grpc provides two major tools to help user debug issues, which are logging and channelz. |
| |
| ## Logs |
| gRPC has put substantial logging instruments on critical paths of gRPC to help users debug issues. |
| The [Log Levels](https://github.com/grpc/grpc-go/blob/master/Documentation/log_levels.md) doc describes |
| what each log level means in the gRPC context. |
| |
| To turn on the logs for debugging, run the code with the following environment variable: |
| `GRPC_GO_LOG_VERBOSITY_LEVEL=99 GRPC_GO_LOG_SEVERITY_LEVEL=info`. |
| |
| ## Channelz |
| We also provide a runtime debugging tool, Channelz, to help users with live debugging. |
| |
| See the channelz blog post here ([link](https://grpc.io/blog/a-short-introduction-to-channelz/)) for |
| details about how to use channelz service to debug live program. |
| |
| ## Try it |
| The example is able to showcase how logging and channelz can help with debugging. See the channelz |
| blog post linked above for full explanation. |
| |
| ``` |
| go run server/main.go |
| ``` |
| |
| ``` |
| go run client/main.go |
| ``` |
