标签：netcore write intern 测试 ati cep ima conf img
原文:.net core使用NLog+Elasticsearch记录日志在微服务或分布式系统中，如果将日志作为文件输出，查看系统日志将非常不便；如果将日志保存到数据库中，又不能进行全文搜索。在这里我们将日志输出到ElasticSearch中，借助Kibana再查找日志。
需要添加两个Nuget引用：NLog.Web.AspNetCore和NLog.Targets.ElasticSearch
新增nlog.config配置文件，并设置属性生成操作为内容，复制到输出目录为始终复制，内容如下。
<?xml version="1.0" encoding="utf-8" ?> <nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" internalLogToConsole="true"> <extensions> <add assembly="NLog.Targets.ElasticSearch"/> </extensions> <targets> <!--ElasticSearch保存日志信息--> <target name="ElasticSearch" xsi:type="ElasticSearch" ConnectionStringName="ElasticSearchServerAddress" index="userapi-${date:format=yyyy.MM.dd}" documentType="doc" includeAllProperties="true" layout="[${date:format=yyyy-MM-dd HH\:mm\:ss}][${level}] ${logger} ${message} ${exception:format=toString}"> <field name="MachineName" layout="${machinename}" /> <field name="Time" layout="${longdate}" /> <field name="level" layout="${level:uppercase=true}" /> <field name="logger" layout=" ${logger}" /> <field name="message" layout=" ${message}" /> <field name="exception" layout=" ${exception:format=toString}" /> <field name="processid" layout=" ${processid}" /> <field name="threadname" layout=" ${threadname}" /> <field name="stacktrace" layout=" ${stacktrace}" /> <field name="Properties" layout="${machinename} ${longdate} ${level:uppercase=true} ${logger} ${message} ${exception}|${processid}|${stacktrace}|${threadname}" /> </target> </targets> <rules> <logger name="*" minlevel="INFO" writeTo="ElasticSearch" /> </rules> </nlog>
修改appsettings.json，增加如下节点，注意，经调试源码才发现，这里必须将连接增加到ConnectionStrings节点下，ElasticSearchServerAddress节点名称对应nlog.config中ConnectionStringName的名称。
"ConnectionStrings": { "ElasticSearchServerAddress": "http://192.168.2.97:9200,http://192.168.2.101:9200,http://192.168.2.102:9200" }
修改Program.cs文件：
public static void Main(string[] args) { NLogBuilder.ConfigureNLog("nlog.config"); BuildWebHost(args).Run(); } public static IWebHost BuildWebHost(string[] args) => WebHost.CreateDefaultBuilder(args) .UseNLog() .UseStartup<Startup>() .Build();
修改Startup.cs文件：
public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory) { loggerFactory.AddNLog(); }
public class ValuesController : Controller { private ILogger _logger; public ValuesController(ILogger<ValuesController> logger) { _logger = logger; } [HttpGet] public IEnumerable<string> Get() { _logger.LogInformation("测试一下，不要紧张!"); return new string[] { "value1", "value2" }; } }
kibana里查询截图：
.net core使用NLog+Elasticsearch记录日志
标签：netcore write intern 测试 ati cep ima conf img
原文地址：https://www.cnblogs.com/lonelyxmas/p/11117710.html
