log 命令

log 命令用于设置日志等级。访问 Documentation of logger (opens new window) 以获取详细信息

日志的等级由低到高分别为：debug | info | notice | warning | error | critical | alert | emergency，日志等级越低，系统输出的日志数量越多，消耗的系统资源越大。为提高系统运行性能，默认的主日志等级是 error。

log set-level

设置主日志等级和所有 Handlers 日志等级:

$ ./bin/emqx_ctl log set-level debug
debug

log primary-level

查看主日志等级:

$ ./bin/emqx_ctl log primary-level
debug

log primary-level

设置主日志等级:

$ ./bin/emqx_ctl log primary-level info
info

log handlers list

查看当前安装的所有 Handlers:

$ ./bin/emqx_ctl log handlers list
LogHandler(id=ssl_handler, level=debug, destination=console, status=started)
LogHandler(id=file, level=warning, destination=log/emqx.log, status=started)
LogHandler(id=default, level=warning, destination=console, status=started)

log handlers start

启动 log handler 'default':

$ ./bin/emqx_ctl log handlers start default
log handler default started

log handlers stop

停止 log handler 'default':

$ ./bin/emqx_ctl log handlers stop default
log handler default stopped

log handlers set-level

设置指定 Handler 的日志等级:

$ ./bin/emqx_ctl log handlers set-level emqx_logger_handler error
error