node.js - How does PM2 define that log content has access IP?

Question

In the nodejs project, the log uses the log function that comes with pm2.
I hope that the log content can include the access IP and the log can be divided by day. How to set it up?

Answer 1

If the console prints ip in the project, it will be output to the pm2 log file. Log splitting by day requires configuration pm2 Parameters.

soonfy

Answer 2

pm2实现不了你这功能，需要配置log4jsto handle

The log function parameters provided by pm2 are as follows

--merge-logs                 不合并process id
--log-date-format <format>   日期格式化
-l --log [path]              日志文件路径（标准输出+错误输出）
-o --output <path>           日志文件路径（标准输出）
-e --error <path>            日志文件路径（错误输出）

Example

{
  "script"          : "echo.js",
  "error_file"      : "err.log",
  "out_file"        : "out.log",
  "merge_logs"      : true,
  "log_date_format" : "YYYY-MM-DD HH:mm Z"
}

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log4jsThe npm documentation is very detailed, I’ll just give you some ideas

1. Initializationlog4js(define file path, segmentation rules)

2. express uses app.user(log4jsInstance.connectLogger, please check the documentation for specific API)

3. Use pm2 to start express app