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README.md

@@ -1,6 +1,9 @@
 # eShopOnContainers - Microservices Architecture and Containers based Reference Application (**BETA state** - Visual Studio 2017 and CLI environments compatible)
 Sample .NET Core reference application, powered by Microsoft, based on a simplified microservices architecture and Docker containers.
 
+[![Build status (Linux images)](https://msftdevtools.visualstudio.com/eShopOnContainers/_apis/build/status/All%20Microservices%20Linux)](https://msftdevtools.visualstudio.com/eShopOnContainers/_build/latest?definitionId=184)
+
+
 ## IMPORTANT NOTES!
 **You can use either the latest version of Visual Studio or simply Docker CLI and .NET CLI for Windows, Mac and Linux**. 
 

src/BuildingBlocks/WebHostCustomization/WebHost.Customization/WebHostExtensions.cs

@@ -1,4 +1,5 @@
 using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
 using Polly;
@@ -10,8 +11,17 @@ namespace Microsoft.AspNetCore.Hosting
 {
     public static class IWebHostExtensions
     {
+        public static bool IsInKubernetes(this IWebHost webHost)
+        {
+            var cfg = webHost.Services.GetService<IConfiguration>();
+            var orchestratorType = cfg.GetValue<string>("OrchestratorType");
+            return orchestratorType?.ToUpper() == "K8S";
+        }
+
         public static IWebHost MigrateDbContext<TContext>(this IWebHost webHost, Action<TContext,IServiceProvider> seeder) where TContext : DbContext
         {
+            var underK8s = webHost.IsInKubernetes();
+
             using (var scope = webHost.Services.CreateScope())
             {
                 var services = scope.ServiceProvider;
@@ -24,6 +34,12 @@ namespace Microsoft.AspNetCore.Hosting
                 {
                     logger.LogInformation($"Migrating database associated with context {typeof(TContext).Name}");
 
+                    if (underK8s)
+                    {
+                        InvokeSeeder(seeder, context, services);
+                    }
+                    else
+                    {
                         var retry = Policy.Handle<SqlException>()
                              .WaitAndRetry(new TimeSpan[]
                              {
@@ -32,28 +48,33 @@ namespace Microsoft.AspNetCore.Hosting
                              TimeSpan.FromSeconds(8),
                              });
 
-                    retry.Execute(() =>
-                    {
                         //if the sql server container is not created on run docker compose this
                         //migration can't fail for network related exception. The retry options for DbContext only 
-                        //apply to transient exceptions.
-
-                        context.Database
-                        .Migrate();
-
-                        seeder(context, services);
-                    });
-                  
+                        //apply to transient exceptions
+                        // Note that this is NOT applied when running some orchestrators (let the orchestrator to recreate the failing service)
+                        retry.Execute(() => InvokeSeeder(seeder, context, services));
+                    }
 
                     logger.LogInformation($"Migrated database associated with context {typeof(TContext).Name}");
                 }
                 catch (Exception ex)
                 {
                     logger.LogError(ex, $"An error occurred while migrating the database used on context {typeof(TContext).Name}");
+                    if (underK8s)
+                    {
+                        throw;          // Rethrow under k8s because we rely on k8s to re-run the pod
+                    }
                 }
             }
 
             return webHost;
         }
+
+        private static void InvokeSeeder<TContext>(Action<TContext, IServiceProvider> seeder, TContext context, IServiceProvider services)
+            where TContext : DbContext  
+        {
+            context.Database.Migrate();
+            seeder(context, services);
+        }
     }
 }

src/Services/Ordering/Ordering.API/web.config

@@ -1,14 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
 <configuration>
-
   <!--
     Configure your application settings in appsettings.json. Learn more at http://go.microsoft.com/fwlink/?LinkId=786380
   -->
-
   <system.webServer>
     <handlers>
-      <add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModule" resourceType="Unspecified"/>
+      <add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModuleV2" resourceType="Unspecified" />
     </handlers>
-    <aspNetCore processPath="%LAUNCHER_PATH%" arguments="%LAUNCHER_ARGS%" stdoutLogEnabled="false" stdoutLogFile=".\logs\stdout" forwardWindowsAuthToken="false"/>
+    <aspNetCore processPath="%LAUNCHER_PATH%" arguments="%LAUNCHER_ARGS%" stdoutLogEnabled="false" stdoutLogFile=".\logs\stdout" forwardWindowsAuthToken="false">
+      <environmentVariables />
+    </aspNetCore>
   </system.webServer>
 </configuration>