Why are my services not registering with Jaeger?

[edtshuma]

0

I have deployed two services in kubernetes (bare-metal k0s. To do some tracing on Jaeger Service A makes a call to Service B for a JWT authentication token - this works perfectly when I test in Visual Studio (Service A is able to retrieve token from Service B).

However when I execute the call in Postman now that I have deployed to k0S , I cannot see neither the services or any traces Jaeger UI :

Using guide from here I have configured the services as below :

Service A (Startup.cs)

`public class Startup
{
private readonly IWebHostEnvironment _environment;
public Startup(IConfiguration configuration, IWebHostEnvironment environment)
{
Configuration = configuration;
_environment = environment;
}
public IConfiguration Configuration { get; }

public void ConfigureServices(IServiceCollection services)
{
    services.AddControllers();
    services.AddDbContext<ModelContext>(o => o.UseOracle(Configuration.GetConnectionString("OracleConn")));
    services.AddCors(c =>
    {
        c.AddPolicy("AllowOrigin", options => options.AllowAnyOrigin());
    });
    services.AddTransient<IAsyncAccountService<SttmCustAccount>, AccountService>();
    services.AddTransient<IAsyncLookupResponse, LookupService>();
    services.AddOpenTracing();
    services.AddSingleton<ITracer>(cli =>
    {
        var serviceName = cli.GetRequiredService<IWebHostEnvironment>().ApplicationName;
        Environment.SetEnvironmentVariable("JAEGER_SERVICE_NAME", serviceName);

        if (_environment.IsDevelopment())
        {
            Environment.SetEnvironmentVariable("JAEGER_AGENT_HOST", "localhost");
            Environment.SetEnvironmentVariable("JAEGER_AGENT_PORT", "6831");
            Environment.SetEnvironmentVariable("JAEGER_SAMPLER_TYPE", "const");
        }        
        ILoggerFactory loggerFactory = cli.GetRequiredService<ILoggerFactory>();

        ISampler sampler = new ConstSampler(sample: true);

        ITracer tracer = new Tracer.Builder(serviceName)
            .WithLoggerFactory(loggerFactory)
            .WithSampler(sampler)
            .Build();

        GlobalTracer.Register(tracer);
        return tracer;
    });           
  
}


public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
    if (env.IsDevelopment())
    {
        app.UseDeveloperExceptionPage();
    }

    app.UseRouting();

    app.UseAuthorization();

    app.UseEndpoints(endpoints =>
    {
        endpoints.MapControllers();
    });
}

}`

Service B has the exact same configuration.

Jaeger operator is set up using NodePort with config as in this file :

[file][https://drive.google.com/file/d/1nAjQ2jHrLSZLWoV9vGb3l4b0M1_yTMTw/view?usp=sharing]

I have to tried to expose the operator as Traefik Ingress but failed and had to change to NodePort (Can this affect registering of services , if at all ?) :

This is the call in Service A that retrieves token from Service B :

` [HttpGet]
public async Task GetAccountAsync([FromQuery] AccountLookupRequest request)
{
string authenticationResponse = await GetTokenAsync();
if (authenticationResponse != null)
{
_logger.LogInformation("Called AccountLookup API");
List res = new List();
var tranRef = String.Format("{1}{2}{0}", Helpers.aa, Helpers.bb, DateTime.Now.ToString("yyMMddHHmmss"));

...
}
}

static async Task GetTokenAsync()
{
var payload = "{"Username": "golide","Password": "It@XXXXX"}";
Uri uri = new Uri("http://10.XXX.XXX.XXX:31306/users/authenticate");
HttpContent c = new StringContent(payload, Encoding.UTF8, "application/json");
AuthenticationResponse responseEntity = new AuthenticationResponse();
var response = string.Empty;
using (var client = new HttpClient())
{
HttpResponseMessage result = await client.PostAsync(uri, c);
if (result.IsSuccessStatusCode)
{
response = result.StatusCode.ToString();
// responseEntity = JsonConvert.DeserializeObject(response);
}
}
return response;
}`

In Postman context the call to http://10.170.xxx.xxx:30488/account?field4=3025202645050&field7=GENERIC01&field10=ABC076 will implicitly invoke the AuthenticationAPI at http://10.170.xxx.xxx:31306/users/authenticate

What am I missing ?