In this blog post we are going to focus on using <\/span>Quarkus<\/span> to <\/span>create and<\/span> monitor<\/span> a native mode <\/span>Quarkus<\/span> application on Azure.<\/span><\/span><\/p>\n A simple service will be created from scratch to <\/span>demonstrate<\/span> the capability of sending <\/span>OpenTelemetry<\/span><\/a> data to Azure.<\/span><\/span>\u00a0<\/span><\/p>\n Quarkus<\/span> Native Mode refers to building and running a <\/span>Quarkus<\/span> application as a native binary executable, using <\/span>GraalVM<\/span> to compile the application <\/span>A<\/span>head <\/span>O<\/span>f<\/span> T<\/span>ime (AOT) into a platform-specific binary. <\/span>That is, there is<\/span> n<\/span>o<\/span> JVM <\/span>required<\/span> at runtime<\/span><\/span>.<\/span><\/span><\/p>\n Recommended scenarios for native mode:<\/span><\/p>\n Disadvantages:<\/span><\/p>\n We\u2019ll<\/span> be building a service from scratch, but <\/span>Quarkus<\/span> has a quick start process to help us!<\/span><\/span><\/p>\n Let\u2019s<\/span> go to\u202f<\/span><\/span>https:\/\/code.quarkus.io\/<\/span><\/span><\/a>, a website where <\/span>Quarkus<\/span> projects can be easily generated. For this case, you only need to select the following extensions:<\/span><\/span><\/p>\n Click on \u201cGenerate your application\u201d and download the zip file.<\/span><\/span><\/p>\n Once saved and extracted on your local machine, please open the project on your IDE of choice.<\/span><\/span><\/p>\n The application will provide a REST endpoint and will access an in-memory database. <\/span>OpenTelemetry<\/span> tracing already <\/span>instruments<\/span>\u202fthe<\/span> REST Server and the Database connection manager.\u202f<\/span><\/span><\/p>\n Other <\/span>Quarkus<\/span> extensions (Kafka, REST, \u2026) can provide <\/span>additional<\/span> instrumentation and <\/span>OpenTelemetry<\/span> data.<\/span><\/span><\/p>\n We\u2019ll<\/span> modify<\/span> the bundled <\/span>GreetingResource<\/span> class <\/span>to add an entry to the <\/span>in-memory<\/span> database<\/span>.<\/span><\/span><\/p>\n Add the following properties to the <\/span>application.properties<\/span> file to allow you application to access to the H2 database:<\/span><\/span><\/p>\n We are going to enable OpenTelemetry metrics and logs. In addition, we will enable the JDBC telemetry to provide <\/span>OpenTelemetry<\/span> <\/span>J<\/span><\/span><\/span>DBC <\/span><\/span><\/span>span<\/span><\/span><\/span>s<\/span><\/span><\/span><\/span><\/a> that is to say SQL executions <\/span>in the <\/span>OpenTelemetry<\/span> trace.<\/span><\/span><\/p>\n Update your application.properties <\/span><\/i>file<\/span>:<\/span><\/p>\n Also add the OpenTelemetry JDBC dependency to the <\/span>pom.xml<\/span><\/i>:<\/span><\/p>\n Create an Azure Application Insights resource if you don’t have one.<\/span><\/p>\n Go to the Azure portal, search for your Application Insights resource, or create a new one. On the overview page of your resource, you will find a connection string <\/span>in the top right corner<\/span><\/a>.<\/span><\/p>\nWhy native?<\/span><\/h2>\n
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Create a demo application<\/h2>\n
Generate the application<\/span><\/h3>\n
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![\"Generate](\"https:\/\/devblogs.microsoft.com\/java\/wp-content\/uploads\/sites\/51\/2025\/05\/generate-quarkus-app-300x213.png\")
<\/a><\/p>\nModify the GreetingResource class<\/span><\/h3>\n
@Path(\"\/hello\")\r\npublic class GreetingResource {\r\n\r\n @Inject\r\n EntityManager manager;\r\n\r\n @POST\r\n @Produces(MediaType.TEXT_PLAIN)\r\n @Transactional\r\n public String hello() {\r\n MyEntity o = new MyEntity();\r\n o.field = \"data to store\";\r\n manager.persist(o);\r\n return \"Hello from Quarkus REST\";\r\n }\r\n}\r\n\r\n<\/code><\/pre>\nConfigure database properties<\/span><\/h3>\n
quarkus.datasource.kind=h2\r\nquarkus.datasource.jdbc.url=jdbc:h2:mem:default\r\nquarkus.hibernate-orm.database.generation=drop-and-create<\/code><\/pre>\nConfigure the telemetry features<\/h2>\n
Enable additional telemetry<\/h3>\n
quarkus.otel.logs.enabled=true\r\nquarkus.log.metrics.enabled=true\r\nquarkus.datasource.jdbc.telemetry=true<\/code><\/pre>\n<dependency>\r\n <groupId>io.opentelemetry.instrumentation<\/groupId>\r\n <artifactId>opentelemetry-jdbc<\/artifactId>\r\n<\/dependency><\/code><\/pre>\nConfigure the Application Insights connection string<\/h3>\n
![](\"https:\/\/devblogs.microsoft.com\/java\/wp-content\/uploads\/sites\/51\/2025\/05\/connection-string.png\"){kind=link}