Asp.Net Core LOKI 轻量级日志服务实战 Serilog

docker-compose部署LOKI

docker-compose.yaml

version: "3"

networks:
  loki:

services:
  loki:
    image: grafana/loki:2.5.0
    ports:
      - "3100:3100"
    command: -config.file=/etc/loki/local-config.yaml
    networks:
      - loki

  promtail:
    image: grafana/promtail:2.5.0
    volumes:
      - /var/log:/var/log
    command: -config.file=/etc/promtail/config.yml
    networks:
      - loki

  grafana:
    image: grafana/grafana:latest
    ports:
      - "3000:3000"
    networks:
      - loki

当前目录执行命令

 docker-compose up -d

配置数据源

启动后使用浏览器访问 http://localhost:3000

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配置所用数据库

黄色代表我们配置成功

配置Asp.Net Core程序

使用到的库

• Serilog
• Serilog.Exceptions
• Serilog.Sinks.Grafana.Loki

初始化NLog时配置

Code

 public static IWebHostBuilder UseSerilogDefault(this IWebHostBuilder hostBuilder)
        {

            var environmentName = Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT");
            var configuration = new ConfigurationBuilder()
                .SetBasePath(Directory.GetCurrentDirectory())
                .AddJsonFile("appsettings.json", optional: true, reloadOnChange: true)
                .AddJsonFile($"appsettings.{environmentName}.json", optional: false, reloadOnChange: true)
                .AddEnvironmentVariables()
                .Build();
            Log.Logger = new LoggerConfiguration()
                .Enrich.FromLogContext()
                .Enrich.WithExceptionDetails()
                .Enrich.WithMachineName()
                .WriteTo.Debug()
                .WriteTo.Console()
                .WriteTo.GrafanaLoki("http://http:localhost:3100/")
                // .WriteTo.Elasticsearch(ConfigureElasticSink(configuration, environmentName))
                .Enrich.WithProperty("Client", "appClient")
                .ReadFrom.Configuration(configuration)
                .CreateLogger();
            
            hostBuilder.UseSerilog();

            return hostBuilder;

        }

最终效果

日志浏览

筛选条件

效果图