{"id":9423,"date":"2024-07-11T11:22:22","date_gmt":"2024-07-11T02:22:22","guid":{"rendered":"https:\/\/www.auctionpro.co.kr\/?p=9423"},"modified":"2026-09-17T10:04:41","modified_gmt":"2026-09-17T01:04:41","slug":"nlog","status":"publish","type":"post","link":"https:\/\/www.auctionpro.co.kr\/?p=9423","title":{"rendered":"NLog"},"content":{"rendered":"\n

\uc81c3\uc790 \ub85c\uae45 \uc11c\ube44\uc2a4<\/strong>: Serilog, NLog, ELK Stack (Elasticsearch, Logstash, Kibana)\uc640 \uac19\uc740 \uc678\ubd80 \ub85c\uae45 \ub77c\uc774\ube0c\ub7ec\ub9ac\ub97c \uc0ac\uc6a9\ud558\uc5ec \ub85c\uadf8\ub97c \ud2b9\uc815 \uc2a4\ud1a0\ub9ac\uc9c0\ub098 \uc11c\ube44\uc2a4\ub85c \ubcf4\ub0bc \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

1. NLog \ud328\ud0a4\uc9c0 \uc124\uce58<\/h3>\n\n\n\n
\"\"<\/a><\/figure>\n\n\n\n
dotnet add package NLog.Web.AspNetCore\ndotnet add package NLog.Extensions.Logging\ndotnet add package NLog.Database<\/pre><\/div>\n\n\n\n
1.1 MySQL \uc5d0 \uc800\uc7a5\uc2dc  : \ub85c\uadf8 \ub514\ube44\ucee8\ub125\uc158 \uc624\ub958 \ubc1c\uc0dd\uc2dc \ubb38\uc81c \ub9ce\uc74c (\ube44\ucd94)<\/h3>\n\n\n\n
\"\"<\/a><\/figure>\n\n\n\n
dotnet add package MySql.Data\n<\/pre><\/div>\n\n\n\n
2. Create the MySQL Database and Table<\/h3>\n\n\n\n
CREATE TABLE LogTable (\n    Id INT AUTO_INCREMENT PRIMARY KEY,\n    Date DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,\n    Level VARCHAR(50) NOT NULL,\n    Logger VARCHAR(255) NOT NULL,\n    Message TEXT NOT NULL,\n    Exception TEXT\n);\n<\/pre><\/div>\n\n\n\n
3. nlog.config \ub8e8\ud2b8\uc5d0 \ucd94\uac00 <\/h3>\n\n\n\n
NLog.Config \uc788\uc744\uc2dc \uc0ad\uc81c<\/p>\n\n\n\n
<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<nlog xmlns=\"http:\/\/www.nlog-project.org\/schemas\/NLog.xsd\"\n      xmlns:xsi=\"http:\/\/www.w3.org\/2001\/XMLSchema-instance\"\n     internalLogLevel=\"Debug\"\n     internalLogFile=\"internal-nlog.txt\">\n\n  <!-- Include the NLog.Web.AspNetCore package -->\n  <extensions>\n    <add assembly=\"NLog.Web.AspNetCore\" \/>\n  <\/extensions>\n\n  <!-- Define the targets -->\n  <targets>\n    <!-- Log to a file -->\n    <target xsi:type=\"File\" name=\"logfile\" fileName=\"logs\/logfile.txt\"\n            layout=\"${longdate} ${uppercase:${level}} ${logger} ${message} ${exception}\" \/>\n\n    <!-- Log to the console -->\n    <target xsi:type=\"Console\" name=\"logconsole\"\n            layout=\"${longdate} ${uppercase:${level}} ${logger} ${message} ${exception}\" \/>\n\n    <!-- Log to a MySQL database -->\n    <target xsi:type=\"Database\" name=\"database\"\n            connectionString=\"Server=myServerAddress;Database=myDataBase;User=myUsername;Password=myPassword;\"\n            dbProvider=\"MySql.Data.MySqlClient.MySqlConnection, MySql.Data\"\n            commandText=\"INSERT INTO LogTable (Level, Logger, Message, Exception) VALUES (@level, @logger, @message, @exception)\">\n      <parameter name=\"@date\" layout=\"${longdate}\" \/>\n      <parameter name=\"@level\" layout=\"${level}\" \/>\n      <parameter name=\"@logger\" layout=\"${logger}\" \/>\n      <parameter name=\"@message\" layout=\"${message}\" \/>\n      <parameter name=\"@exception\" layout=\"${exception:tostring}\" \/>\n    <\/target>\n  <\/targets>\n\n  <!-- Define the rules -->\n  <rules>\n    <!-- Log everything to file and console -->\n    <logger name=\"*\" minlevel=\"Trace\" writeTo=\"logfile,logconsole\" \/>\n\n    <!-- Log only errors to the database -->\n    <logger name=\"*\" minlevel=\"Error\" writeTo=\"database\" \/>\n  <\/rules>\n<\/nlog>\n<\/pre><\/div>\n\n\n\n
4.Program.cs<\/h3>\n\n\n\n
using NLog.Web;\n\nvar logger = NLogBuilder.ConfigureNLog(\"nlog.config\").GetCurrentClassLogger();\ntry\n{\n    logger.Debug(\"init main\");\n    var builder = WebApplication.CreateBuilder(args);\n\n    \/\/ Add services to the container.\n    builder.Services.AddControllersWithViews();\n\n    \/\/ Configure NLog as the logging provider\n    builder.Logging.ClearProviders();\n    builder.Logging.SetMinimumLevel(Microsoft.Extensions.Logging.LogLevel.Trace);\n    builder.Host.UseNLog();\n\n    var app = builder.Build();\n\n    \/\/ Configure the HTTP request pipeline.\n    if (!app.Environment.IsDevelopment())\n    {\n        app.UseExceptionHandler(\"\/Home\/Error\");\n        app.UseHsts();\n    }\n\n    app.UseHttpsRedirection();\n    app.UseStaticFiles();\n\n    app.UseRouting();\n\n    app.UseAuthorization();\n\n    app.MapControllerRoute(\n        name: \"default\",\n        pattern: \"{controller=Home}\/{action=Index}\/{id?}\");\n\n    app.Run();\n}\ncatch (Exception ex)\n{\n    \/\/ NLog: catch setup errors\n    logger.Error(ex, \"Stopped program because of exception\");\n    throw;\n}\nfinally\n{\n    \/\/ Ensure to flush and stop internal timers\/threads before application-exit (Avoid segmentation fault on Linux)\n    NLog.LogManager.Shutdown();\n}\n<\/pre><\/div>\n\n\n\n
5. Mysql Log Data<\/h3>\n\n\n\n
\"\"<\/a><\/figure>\n\n\n\n
6. Log files<\/h3>\n\n\n\n
\"\"<\/a><\/figure>\n\n\n\n
2024-07-10 13:56:04.8714 INFO Starting up\n2024-07-10 15:30:18.1394 INFO Starting up\n2024-07-10 15:43:03.4143 INFO Starting up\n2024-07-10 16:06:03.7546 DEBUG InMemoryCacheCore.Program init main\n2024-07-10 16:06:04.6545 INFO InMemoryCacheCore.Program Starting up\n2024-07-10 16:22:22.6490 DEBUG InMemoryCacheCore.Program init main\n2024-07-10 16:22:23.9055 INFO InMemoryCacheCore.Program Starting up\n2024-07-10 16:29:31.8965 DEBUG InMemoryCacheCore.Program init main<\/pre><\/div>\n\n\n\n
\ucd94\uac00 -Log \uc81c\uac70<\/h3>\n\n\n\n
NLog\uc758 \ub85c\uadf8 \uc21c\ud658(Log Rotation)\uacfc \ubcf4\uad00 \uac1c\uc218 \uc81c\ud55c<\/strong>\uc744 \uc124\uc815\ud558\uba74 \ub85c\uadf8 \ub54c\ubb38\uc5d0 \uc11c\ubc84 \ub514\uc2a4\ud06c\uac00 \uacc4\uc18d \uc904\uc5b4\ub4dc\ub294 \uac83\uc744 \ubc29\uc9c0\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n
.NET Framework 4.8\uc758 NLog.config<\/code> \uc608\uc2dc\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n
<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n<nlog xmlns=\"http:\/\/www.nlog-project.org\/schemas\/NLog.xsd\"\n      xmlns:xsi=\"http:\/\/www.w3.org\/2001\/XMLSchema-instance\">\n\n  <targets>\n    <target xsi:type=\"File\"\n            name=\"logFile\"\n\n            fileName=\"${basedir}\/logs\/application.log\"\n\n            archiveFileName=\"${basedir}\/logs\/archive\/application.{#}.log\"\n\n            archiveEvery=\"Day\"\n            archiveAboveSize=\"104857600\"\n\n            archiveNumbering=\"DateAndSequence\"\n            archiveDateFormat=\"yyyyMMdd\"\n\n            maxArchiveFiles=\"30\"\n\n            layout=\"${longdate}|${level}|${logger}|${message} ${exception:format=tostring}\" \/>\n  <\/targets>\n\n  <rules>\n    <logger name=\"*\" minlevel=\"Info\" writeTo=\"logFile\" \/>\n  <\/rules>\n<\/nlog><\/pre><\/div>\n\n\n\n
\uac01 \uc124\uc815\uc758 \uc758\ubbf8\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n
\uc124\uc815<\/th>\uc758\ubbf8<\/th><\/tr><\/thead>
archiveEvery=\"Day\"<\/code><\/td>\ub0a0\uc9dc\uac00 \ubc14\ub00c\uba74 \uae30\uc874 \ub85c\uadf8\ub97c \ubcf4\uad00 \ud30c\uc77c\ub85c \uc774\ub3d9<\/td><\/tr>
archiveAboveSize=\"104857600\"<\/code><\/td>\ud30c\uc77c\uc774 100MB\ub97c \ub118\uc73c\uba74 \uc989\uc2dc \ubd84\ub9ac<\/td><\/tr>
maxArchiveFiles=\"30\"<\/code><\/td>\ubcf4\uad00 \ub85c\uadf8\ub97c \ucd5c\ub300 30\uac1c\uae4c\uc9c0\ub9cc \uc720\uc9c0<\/td><\/tr>
archiveNumbering=\"DateAndSequence\"<\/code><\/td>\ub0a0\uc9dc\uc640 \uc21c\ubc88\uc73c\ub85c \ubcf4\uad00 \ud30c\uc77c\uba85 \uc0dd\uc131<\/td><\/tr>
minlevel=\"Info\"<\/code><\/td>\uc6a9\ub7c9\uc774 \ud070 Trace<\/code>, Debug<\/code> \ub85c\uadf8 \uc81c\uc678<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\uc0dd\uc131\ub418\ub294 \ud30c\uc77c\uc740 \ub300\ub7b5 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n
logs\/\n \u251c\u2500 application.log\n \u2514\u2500 archive\/\n     \u251c\u2500 application.20260915.0.log\n     \u251c\u2500 application.20260916.0.log\n     \u251c\u2500 application.20260916.1.log\n     \u2514\u2500 application.20260917.0.log<\/code><\/pre>\n\n\n\n
maxArchiveFiles=\"30\"<\/code>\uc744 \uc801\uc6a9\ud558\uba74 31\ubc88\uc9f8 \ubcf4\uad00 \ud30c\uc77c\uc774 \uc0dd\uc131\ub420 \ub54c \uac00\uc7a5 \uc624\ub798\ub41c \ud30c\uc77c\uc744 \uc790\ub3d9 \uc0ad\uc81c\ud569\ub2c8\ub2e4. NLog\ub294 ArchiveAboveSize<\/code>\ub85c \uc9c0\uc815\ub41c \ubc14\uc774\ud2b8 \ud06c\uae30\ub97c \ucd08\uacfc\ud558\uba74 \uc790\ub3d9 \ubcf4\uad00\ud558\uba70, MaxArchiveFiles<\/code>\ub85c \ubcf4\uad00 \ud30c\uc77c\uc758 \ucd5c\ub300 \uac1c\uc218\ub97c \uc81c\ud55c\ud569\ub2c8\ub2e4. NLog ArchiveAboveSize \ubb38\uc11c<\/a>, NLog MaxArchiveFiles \ubb38\uc11c<\/a><\/p>\n\n\n\n
\uc8fc\uc758\ud560 \uc810\uc740 archiveAboveSize<\/code>\ub9cc \uc124\uc815\ud558\uace0 maxArchiveFiles<\/code>\ub97c \uc124\uc815\ud558\uc9c0 \uc54a\uc73c\uba74 \ub85c\uadf8 \ud30c\uc77c\ub9cc \uacc4\uc18d \ubd84\ub9ac\ub418\uace0 \uc804\uccb4 \uc0ac\uc6a9\ub7c9\uc740 \uacc4\uc18d \uc99d\uac00\ud55c\ub2e4\ub294 \uac83\uc785\ub2c8\ub2e4. \ub450 \uc124\uc815\uc744 \uac19\uc774 \uc0ac\uc6a9\ud558\ub294 \uac83\uc774 \uc911\uc694\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n
\ub2e4\ub9cc NLog \uc790\uccb4\uc5d0\ub294 \uc77c\ubc18\uc801\uc73c\ub85c \u201c\ub514\uc2a4\ud06c \uc5ec\uc720 \uacf5\uac04\uc774 10GB \ubbf8\ub9cc\uc774\uba74 \uae30\ub85d \uc911\uc9c0\u201d \uac19\uc740 \uc804\uccb4 \ub514\uc2a4\ud06c \uc6a9\ub7c9 \uac10\uc2dc \uae30\ub2a5\uc740 \uc5c6\uc2b5\ub2c8\ub2e4. \ub530\ub77c\uc11c \uc6b4\uc601 \uc11c\ubc84\uc5d0\uc11c\ub294 \ub2e4\uc74c \uc870\ud569\uc744 \uad8c\uc7a5\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n