Quickstart: Deploy your first application to Azure Spring Cloud

บทความ
12/03/2021
12 นาทีในการอ่าน

This quickstart explains how to deploy a small application to run on Azure Spring Cloud.

Note

Steeltoe support for Azure Spring Cloud is currently offered as a public preview. Public preview offerings allow customers to experiment with new features prior to their official release. Public preview features and services are not meant for production use. For more information about support during previews, see the FAQ or file a Support request.

By following this quickstart, you'll learn how to:

Generate a basic Steeltoe .NET Core project
Provision an Azure Spring Cloud service instance
Build and deploy the app with a public endpoint
Stream logs in real time

The application code used in this quickstart is a simple app built with a .NET Core Web API project template. When you've completed this example, the application will be accessible online and can be managed via the Azure portal and the Azure CLI.

Prerequisites

An Azure account with an active subscription. Create an account for free.
.NET Core 3.1 SDK. The Azure Spring Cloud service supports .NET Core 3.1 and later versions.
Azure CLI version 2.0.67 or later.
Git.

Install Azure CLI extension

Verify that your Azure CLI version is 2.0.67 or later:

az --version

Install the Azure Spring Cloud extension for the Azure CLI using the following command:

az extension add --name spring-cloud

If you have more than one subscription, choose the one you want to use for this quickstart.

az account list -o table

az account set --subscription <Name or ID of a subscription from the last step>

Generate a Steeltoe .NET Core project

In Visual Studio, create an ASP.NET Core Web application named as "hello-world" with API project template. Please notice there will be an auto-generated WeatherForecastController that will be our test endpoint later on.

Create a folder for the project source code and generate the project.

mkdir source-code

cd source-code

dotnet new webapi -n hello-world --framework netcoreapp3.1

Navigate into the project directory.
```
cd hello-world
```

Edit the appSettings.json file to add the following settings:

"spring": {
  "application": {
    "name": "hello-world"
  }
},
"eureka": {
  "client": {
    "shouldFetchRegistry": true,
    "shouldRegisterWithEureka": true
  }
}

Also in appsettings.json, change the log level for the Microsoft category from Warning to Information. This change ensures that logs will be produced when you view streaming logs in a later step.

The appsettings.json file now looks similar to the following example:

{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft": "Information",
      "Microsoft.Hosting.Lifetime": "Information"
    }
  },
  "AllowedHosts": "*",
  "spring": {
    "application": {
      "name": "hello-world"
    }
  },
  "eureka": {
    "client": {
      "shouldFetchRegistry": true,
      "shouldRegisterWithEureka": true
    }
  }
}

Add dependencies and a Zip task to the .csproj file:

<ItemGroup>
  <PackageReference Include="Steeltoe.Discovery.ClientCore" Version="3.1.0" />
  <PackageReference Include="Microsoft.Azure.SpringCloud.Client" Version="2.0.0-preview.1" />
</ItemGroup>
<Target Name="Publish-Zip" AfterTargets="Publish">
  <ZipDirectory SourceDirectory="$(PublishDir)" DestinationFile="$(MSBuildProjectDirectory)/deploy.zip" Overwrite="true" />
</Target>

The packages are for Steeltoe Service Discovery and the Azure Spring Cloud client library. The Zip task is for deployment to Azure. When you run the dotnet publish command, it generates the binaries in the publish folder, and this task zips the publish folder into a .zip file that you upload to Azure.

In the Program.cs file, add a using directive and code that uses the Azure Spring Cloud client library:

using Microsoft.Azure.SpringCloud.Client;

public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args)
                .UseAzureSpringCloudService()
                .ConfigureWebHostDefaults(webBuilder =>
                {
                    webBuilder.UseStartup<Startup>();
                });

In the Startup.cs file, add a using directive and code that uses the Steeltoe Service Discovery at the end of the ConfigureServices method:

using Steeltoe.Discovery.Client;

public void ConfigureServices(IServiceCollection services)
{
    // Template code not shown.

    services.AddDiscoveryClient(Configuration);
}

Build the project to make sure there are no compile errors.
```
dotnet build
```

Provision a service instance

The following procedure creates an instance of Azure Spring Cloud using the Azure portal.

Open the Azure portal.
From the top search box, search for Azure Spring Cloud.
Select Azure Spring Cloud from the results.
On the Azure Spring Cloud page, select Create.
Fill out the form on the Azure Spring Cloud Create page. Consider the following guidelines:
- Subscription: Select the subscription you want to be billed for this resource.
- Resource group: Create a new resource group. The name you enter here will be used in later steps as <resource group name>.
- Service Details/Name: Specify the <service instance name>. The name must be between 4 and 32 characters long and can contain only lowercase letters, numbers, and hyphens. The first character of the service name must be a letter and the last character must be either a letter or a number.
- Region: Select the region for your service instance.
Select Review and create.
Select Create.

Build and deploy the app

The following procedure builds and deploys the project that you created earlier.

Make sure the command prompt is still in the project folder.
Run the following command to build the project, publish the binaries, and store the binaries in a .zip file in the project folder.
```
dotnet publish -c release -o ./publish
```
Create an app in your Azure Spring Cloud instance with a public endpoint assigned. Use the same application name "hello-world" that you specified in appsettings.json.
```
az spring-cloud app create -n hello-world -s <service instance name> -g <resource group name> --assign-endpoint --runtime-version NetCore_31
```
Deploy the .zip file to the app.
```
az spring-cloud app deploy -n hello-world -s <service instance name> -g <resource group name> --runtime-version NetCore_31 --main-entry hello-world.dll --artifact-path ./deploy.zip
```
The --main-entry option identifies the .dll file that contains the application's entry point. After the service uploads the .zip file, it extracts all the files and folders and tries to execute the entry point in the .dll file specified by --main-entry.

It takes a few minutes to finish deploying the application. To confirm that it has deployed, go to the Apps section in the Azure portal.

Test the app

Once deployment has completed, access the app at the following URL:

https://<service instance name>-hello-world.azuremicroservices.io/weatherforecast

The app returns JSON data similar to the following example:

[{"date":"2020-09-08T21:01:50.0198835+00:00","temperatureC":14,"temperatureF":57,"summary":"Bracing"},{"date":"2020-09-09T21:01:50.0200697+00:00","temperatureC":-14,"temperatureF":7,"summary":"Bracing"},{"date":"2020-09-10T21:01:50.0200715+00:00","temperatureC":27,"temperatureF":80,"summary":"Freezing"},{"date":"2020-09-11T21:01:50.0200717+00:00","temperatureC":18,"temperatureF":64,"summary":"Chilly"},{"date":"2020-09-12T21:01:50.0200719+00:00","temperatureC":16,"temperatureF":60,"summary":"Chilly"}]

Stream logs in real time

Use the following command to get real-time logs from the App.

az spring-cloud app logs -n hello-world -s <service instance name> -g <resource group name> --lines 100 -f

Logs appear in the output:

[Azure Spring Cloud] The following environment variables are loaded:
2020-09-08 20:58:42,432 INFO supervisord started with pid 1
2020-09-08 20:58:43,435 INFO spawned: 'event-gather_00' with pid 9
2020-09-08 20:58:43,436 INFO spawned: 'dotnet-app_00' with pid 10
2020-09-08 20:58:43 [Warning] No managed processes are running. Wait for 30 seconds...
2020-09-08 20:58:44,843 INFO success: event-gather_00 entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
2020-09-08 20:58:44,843 INFO success: dotnet-app_00 entered RUNNING state, process has stayed up for > than 1 seconds (startsecs)
←[40m←[32minfo←[39m←[22m←[49m: Steeltoe.Discovery.Eureka.DiscoveryClient[0]
      Starting HeartBeat
info: Microsoft.Hosting.Lifetime[0]
      Now listening on: http://[::]:1025
info: Microsoft.Hosting.Lifetime[0]
      Application started. Press Ctrl+C to shut down.
info: Microsoft.Hosting.Lifetime[0]
      Hosting environment: Production
info: Microsoft.Hosting.Lifetime[0]
      Content root path: /netcorepublish/6e4db42a-b160-4b83-a771-c91adec18c60
2020-09-08 21:00:13 [Information] [10] Start listening...
info: Microsoft.AspNetCore.Hosting.Diagnostics[1]
      Request starting HTTP/1.1 GET http://asc-svc-hello-world.azuremicroservices.io/weatherforecast
info: Microsoft.AspNetCore.Routing.EndpointMiddleware[0]
      Executing endpoint 'hello_world.Controllers.WeatherForecastController.Get (hello-world)'
info: Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker[3]
      Route matched with {action = "Get", controller = "WeatherForecast"}. Executing controller action with signature System.Collections.Generic.IEnumerable`1[hello_world.WeatherForecast] Get() on controller hello_world.Controllers.WeatherForecastController (hello-world).
info: Microsoft.AspNetCore.Mvc.Infrastructure.ObjectResultExecutor[1]
      Executing ObjectResult, writing value of type 'hello_world.WeatherForecast[]'.
info: Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker[2]
      Executed action hello_world.Controllers.WeatherForecastController.Get (hello-world) in 1.8902ms
info: Microsoft.AspNetCore.Routing.EndpointMiddleware[1]
      Executed endpoint 'hello_world.Controllers.WeatherForecastController.Get (hello-world)'
info: Microsoft.AspNetCore.Hosting.Diagnostics[2]
      Request finished in 4.2591ms 200 application/json; charset=utf-8

Tip

Use az spring-cloud app logs -h to explore more parameters and log stream functionalities.

For advanced log analytics features, visit Logs tab in the menu on the Azure portal. Logs here have a latency of a few minutes.

This quickstart explains how to deploy a small application to Azure Spring Cloud.

The application code used in this tutorial is a simple app built with Spring Initializr. When you've completed this example, the application will be accessible online and can be managed via the Azure portal.

This quickstart explains how to:

Generate a basic Spring Cloud project
Provision a service instance
Build and deploy the app with a public endpoint
Stream logs in real time

Prerequisites

To complete this quickstart:

Install JDK 8 or JDK 11
Sign up for an Azure subscription
(Optional) Install the Azure CLI version 2.0.67 or higher and the Azure Spring Cloud extension with the command: az extension add --name spring-cloud
(Optional) Install IntelliJ IDEA
(Optional) Install the Azure Toolkit for IntelliJ and sign-in
(Optional) Install Maven. If you use the Azure Cloud Shell, this installation isn't needed.

Generate a Spring Cloud project

Start with Spring Initializr to generate a sample project with recommended dependencies for Azure Spring Cloud. This link uses the following URL to provide default settings for you.

https://start.spring.io/#!type=maven-project&language=java&platformVersion=2.5.7&packaging=jar&jvmVersion=1.8&groupId=com.example&artifactId=hellospring&name=hellospring&description=Demo%20project%20for%20Spring%20Boot&packageName=com.example.hellospring&dependencies=web,cloud-eureka,actuator,cloud-config-client

The following image shows the recommended Initializr set up for this sample project.

This example uses Java version 8. If you want to use Java version 11, change the option under Project Metadata.

Initializr page

Select Generate when all the dependencies are set.

Download and unpack the package, then create a web controller for a simple web application by adding the file src/main/java/com/example/hellospring/HelloController.java with the following contents:

package com.example.hellospring;

import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.bind.annotation.RequestMapping;

@RestController
public class HelloController {

    @RequestMapping("/")
    public String index() {
        return "Greetings from Azure Spring Cloud!";
    }

}

Provision an instance of Azure Spring Cloud

The following procedure creates an instance of Azure Spring Cloud using the Azure portal.

In a new tab, open the Azure portal.
From the top search box, search for Azure Spring Cloud.
Select Azure Spring Cloud from the results.
On the Azure Spring Cloud page, select Create.
Fill out the form on the Azure Spring Cloud Create page. Consider the following guidelines:
- Subscription: Select the subscription you want to be billed for this resource.
- Resource group: Creating new resource groups for new resources is a best practice. You will use this resource group in later steps as <resource group name>.
- Service Details/Name: Specify the <service instance name>. The name must be between 4 and 32 characters long and can contain only lowercase letters, numbers, and hyphens. The first character of the service name must be a letter and the last character must be either a letter or a number.
- Location: Select the region for your service instance.
Select Review and create.

The following procedure builds and deploys the application using the Azure CLI. Execute the following command at the root of the project.

Sign in to Azure and choose your subscription.
```
az login
```
If you have more than one subscription, use the following command to list the subscriptions you have access to, then choose the one you want to use for this quickstart.
```
az account list -o table
```
Use the following command to set the default subscription to use with the Azure CLI commands in this quickstart.
```
az account set --subscription <Name or ID of a subscription from the last step>
```
Build the project using Maven:
```
mvn clean package -DskipTests
```
Create the app with a public endpoint assigned. If you selected Java version 11 when generating the Spring Cloud project, include the --runtime-version=Java_11 switch.
```
az spring-cloud app create -n hellospring -s <service instance name> -g <resource group name> --assign-endpoint true
```

Deploy the Jar file for the app (target\hellospring-0.0.1-SNAPSHOT.jar on Windows):

az spring-cloud app deploy -n hellospring -s <service instance name> -g <resource group name> --artifact-path <jar file path>/hellospring-0.0.1-SNAPSHOT.jar

It takes a few minutes to finish deploying the application. To confirm that it has deployed, go to the Apps section in the Azure portal. You should see the status of the application.

The following procedure uses the IntelliJ plug-in for Azure Spring Cloud to deploy the sample app in IntelliJ IDEA.

Import project

Open the IntelliJ Welcome dialog, then select Open to open the import wizard.
Select the hellospring folder.

Deploy the app

In order to deploy to Azure, you must sign in with your Azure account, then choose your subscription. For sign-in details, see Installation and sign-in.

Right-click your project in IntelliJ project explorer, then select Azure -> Deploy to Azure Spring Cloud.
Accept the name for the app in the Name field. Name refers to the configuration, not the app name. Users don't usually need to change it.
In the Artifact textbox, select Maven:com.example:hellospring-0.0.1-SNAPSHOT.
In the Subscription textbox, verify your subscription is correct.
In the Service textbox, select the instance of Azure Spring Cloud that you created in Provision an instance of Azure Spring Cloud.
In the App textbox, select + to create a new app.
In the App name: textbox, enter hellospring, then check the More settings check box.
Select the Enable button next to Public endpoint. The button will change to Disable <to be enabled>.
If you used Java 11, select Java 11 in Runtime.
Select OK.
Under Before launch, select the Run Maven Goal 'hellospring:package' line, then select the pencil to edit the command line.
In the Command line textbox, enter -DskipTests after package, then select OK.
Start the deployment by selecting the Run button at the bottom of the Deploy Azure Spring Cloud app dialog. The plug-in will run the command mvn package -DskipTests on the hellospring app and deploy the jar generated by the package command.

Once deployment has completed, you can access the app at https://<service instance name>-hellospring.azuremicroservices.io/.

Streaming logs in real time

CLI
IntelliJ

Use the following command to get real-time logs from the App.

az spring-cloud app logs -n hellospring -s <service instance name> -g <resource group name> --lines 100 -f

Logs appear in the results:

Tip

Use az spring-cloud app logs -h to explore more parameters and log stream functionalities.

For advanced logs analytics features, visit the Logs tab in the menu on the Azure portal. Logs here have a latency of a few minutes.

Clean up resources

In the above steps, you created Azure resources that will continue to accrue charges while they remain in your subscription. If you don't expect to need these resources in the future, delete the resource group from the portal or by running the following command in the Azure CLI:

az group delete --name <your resource group name> --yes

Next steps

In this quickstart, you learned how to:

Generate a basic Spring Cloud project
Provision a service instance
Build and deploy the app with a public endpoint
Stream logs in real time

To learn how to use more Azure Spring capabilities, advance to the quickstart series that deploys a sample application to Azure Spring Cloud:

Build and Run Apps

More samples are available on GitHub: Azure Spring Cloud Samples.

Quickstart: Deploy your first application to Azure Spring Cloud

โปรดให้คะแนนประสบการณ์การใช้งานของคุณ

Prerequisites

Install Azure CLI extension

Sign in to Azure

Generate a Steeltoe .NET Core project

Provision a service instance

Build and deploy the app

Test the app

Stream logs in real time

Prerequisites

Generate a Spring Cloud project

Provision an instance of Azure Spring Cloud

Build and deploy the app

Streaming logs in real time

Clean up resources

Next steps

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