过滤基质日志

Question

当运行底层节点时，如何根据日志行中出现的单词或模式过滤日志行？

我试过了运行:

RUST_LOG=runtime=debug cargo run -- --dev | grep 'INFO'

然而，这仍然给我输出的所有行，例如：

2021-03-03 12:01:18.292  DEBUG main runtime: Called should_end_session    
2021-03-03 12:01:18.292  DEBUG main runtime: Cannot fetch slot number    
2021-03-03 12:01:18.684   INFO main sc_service::builder:  Highest known block at #41    
2021-03-03 12:01:18.688   INFO tokio-runtime-worker substrate_prometheus_endpoint::known_os: 〽️ Prometheus server started at 127.0.0.1:9615    
2021-03-03 12:01:18.708   INFO                 main parity_ws: Listening for new connections on 127.0.0.1:9944.    
2021-03-03 12:01:18.963   INFO ThreadId(33) parity_ws::io: Accepted a new tcp connection from 127.0.0.1:62079.    
2021-03-03 12:01:19.131   WARN          event.loop0 sc_rpc_api::errors: Unknown error: Client(UnknownBlock("header not found in db: 0x6eb1…618b"))    
2021-03-03 12:01:19.132   WARN          event.loop0 sc_rpc_api::errors: Unknown error: Client(UnknownBlock("header not found in db: 0x6eb1…618b"))    
2021-03-03 12:01:20.124   INFO ThreadId(33) parity_ws::io: Accepted a new tcp connection from 127.0.0.1:62080.    
2021-03-03 12:01:21.433  DEBUG tokio-runtime-worker runtime: Called should_end_session    
2021-03-03 12:01:21.433  DEBUG tokio-runtime-worker runtime: Cannot fetch slot number    
2021-03-03 12:01:21.536   INFO tokio-runtime-worker sc_basic_authorship::basic_authorship:  Starting consensus session on top of parent 0xa246d8880f1a820bb2275b78e728471c38c3406271d12b3f852fa717a5338c95

Answer 1

一个简单的解决方案：如果您 redirect stdout and stderr 进入一个文件（&> 命令），您可以使用您喜欢的任何方法过滤它。

您可能还想使用 tee command 在终端和文件中查看输出

过滤基质日志

Filtering substrate logs

logging

substrate

parity-io