Golang日志文件过大如何处理？Golang日志分割与压缩方案

package main

import (
    "fmt"
    "log"
    "os"
    "time"
)

func main() {
    now := time.Now()
    logFileName := fmt.Sprintf("app_%d-%02d-%02d.log", now.Year(), now.Month(), now.Day())
    logFile, err := os.OpenFile(logFileName, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
    if err != nil {
        log.Fatalf("Failed to open log file: %v", err)
    }
    defer logFile.Close()

    log.SetOutput(logFile)
    log.SetFlags(log.Ldate | log.Ltime | log.Lshortfile)

    log.Println("This is a log message.")
}

package main

import (
    "log"
    "gopkg.in/natefinch/lumberjack.v2"
)

func main() {
    logger := &lumberjack.Logger{
        Filename:   "./app.log", // 日志文件路径
        MaxSize:    100,       // 每个日志文件最大 size，单位是 MB
        MaxBackups: 5,         // 最大保留旧日志文件数量
        MaxAge:     30,        // 保留旧日志文件的最大天数
        Compress:   true,      // 是否压缩/归档旧日志文件
    }

    log.SetOutput(logger)
    log.SetFlags(log.Ldate | log.Ltime | log.Lshortfile)

    log.Println("This is a log message.")

    // 可以在程序退出时关闭 lumberjack
    // defer logger.Close() // 实际上 lumberjack 会自动处理 close
}

package main

import (
    "log"
    "github.com/sirupsen/logrus"
    "gopkg.in/natefinch/lumberjack.v2"
    "os"
)

func main() {
    // 初始化 lumberjack
    lumberjackLogger := &lumberjack.Logger{
        Filename:   "./app.log",
        MaxSize:    100,
        MaxBackups: 5,
        MaxAge:     30,
        Compress:   true,
    }

    // 初始化 logrus
    logrusLogger := logrus.New()
    logrusLogger.SetOutput(lumberjackLogger)
    logrusLogger.SetFormatter(&logrus.JSONFormatter{}) // 输出 JSON 格式

    // 设置 logrus 的默认 logger
    log.SetOutput(logrusLogger.Writer()) // 将标准 log 重定向到 logrus
    log.SetFlags(0) // 禁用标准 log 的 flags，避免重复输出

    logrusLogger.WithFields(logrus.Fields{
        "component": "main",
        "action":    "start",
    }).Info("Application started")

    log.Println("This is a log message from standard log.") // 会被 logrus 处理

    logrusLogger.Info("This is a log message from logrus.")
}

/path/to/your/app.log {
    daily
    rotate 7
    compress
    delaycompress
    missingok
    notifempty
    create 644 root root
}

#!/bin/bash

LOG_FILE="/path/to/your/app.log"
MAX_SIZE=100 # MB

file_size=$(du -m "$LOG_FILE" | awk '{print $1}')

if [ "$file_size" -gt "$MAX_SIZE" ]; then
  echo "Log file size exceeds threshold: $file_size MB"
  # 进行日志分割、压缩等操作
  gzip "$LOG_FILE"
fi