mirror of https://github.com/knative/docs.git
Fixed markdown syntax in helloworld-java-spring/README.md (#5164)
* Fixed markdown syntax in helloworld-java-spring/README.md Signed-off-by: Helber Belmiro <helber.belmiro@gmail.com> * Update code-samples/serving/hello-world/helloworld-java-spring/README.md Co-authored-by: Samia Nneji <snneji@vmware.com> * Update code-samples/serving/hello-world/helloworld-java-spring/README.md Co-authored-by: Samia Nneji <snneji@vmware.com> * Update code-samples/serving/hello-world/helloworld-java-spring/README.md Co-authored-by: Samia Nneji <snneji@vmware.com> * Update code-samples/serving/hello-world/helloworld-java-spring/README.md Co-authored-by: Samia Nneji <snneji@vmware.com> * Update code-samples/serving/hello-world/helloworld-java-spring/README.md Co-authored-by: Samia Nneji <snneji@vmware.com> * Update code-samples/serving/hello-world/helloworld-java-spring/README.md Co-authored-by: Samia Nneji <snneji@vmware.com> * Update code-samples/serving/hello-world/helloworld-java-spring/README.md Co-authored-by: Samia Nneji <snneji@vmware.com> * Update code-samples/serving/hello-world/helloworld-java-spring/README.md Co-authored-by: Samia Nneji <snneji@vmware.com> * Update code-samples/serving/hello-world/helloworld-java-spring/README.md Co-authored-by: Samia Nneji <snneji@vmware.com> * Update code-samples/serving/hello-world/helloworld-java-spring/README.md Co-authored-by: Samia Nneji <snneji@vmware.com> * Update code-samples/serving/hello-world/helloworld-java-spring/README.md * Update code-samples/serving/hello-world/helloworld-java-spring/README.md * Update code-samples/serving/hello-world/helloworld-java-spring/README.md * Update code-samples/serving/hello-world/helloworld-java-spring/README.md * Update code-samples/serving/hello-world/helloworld-java-spring/README.md Signed-off-by: Helber Belmiro <helber.belmiro@gmail.com> Co-authored-by: Samia Nneji <snneji@vmware.com>
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Helber Belmiro
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@ -32,10 +32,10 @@ cd knative-docs/code-samples/serving/hello-world/helloworld-java-spring
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unzip helloworld.zip
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```
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If you don't have `curl` installed, you can accomplish the same by visiting the
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[Spring Initializr](https://start.spring.io/) page. Specify Artifact as
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`helloworld` and add the `Web` dependency. Then click **Generate Project**,
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download and unzip the sample archive.
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If you don't have `curl` installed, you can accomplish the same by visiting the
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[Spring Initializr](https://start.spring.io/) page. Specify Artifact as
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`helloworld` and add the `Web` dependency. Then click **Generate Project**,
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download and unzip the sample archive.
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1. Update the `SpringBootApplication` class in
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`src/main/java/com/example/helloworld/HelloworldApplication.java` by adding a
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@ -77,7 +77,7 @@ cd knative-docs/code-samples/serving/hello-world/helloworld-java-spring
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./mvnw package && java -jar target/helloworld-0.0.1-SNAPSHOT.jar
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```
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Go to `http://localhost:8080/` to see your `Hello World!` message.
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Go to `http://localhost:8080/` to see your `Hello World!` message.
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1. In your project directory, create a file named `Dockerfile` and copy the following code block into it:
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@ -105,9 +105,9 @@ cd knative-docs/code-samples/serving/hello-world/helloworld-java-spring
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CMD ["java", "-Djava.security.egd=file:/dev/./urandom", "-jar", "/helloworld.jar"]
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```
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For detailed instructions on dockerizing a Spring Boot app, see [Spring Boot with Docker](https://spring.io/guides/gs/spring-boot-docker/).
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For detailed instructions on dockerizing a Spring Boot app, see [Spring Boot with Docker](https://spring.io/guides/gs/spring-boot-docker/).
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For additional information on multi-stage docker builds for Java see [Creating Smaller Java Image using Docker Multi-stage Build](http://blog.arungupta.me/smaller-java-image-docker-multi-stage-build/).
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For additional information on multi-stage docker builds for Java see [Creating Smaller Java Image using Docker Multi-stage Build](http://blog.arungupta.me/smaller-java-image-docker-multi-stage-build/).
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1. Use Docker to build the sample code into a container, then push the container to the Docker registry:
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@ -118,7 +118,7 @@ cd knative-docs/code-samples/serving/hello-world/helloworld-java-spring
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# Push the container to docker registry
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docker push {username}/helloworld-java-spring
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```
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Where `{username}` is your Docker Hub username.
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Where `{username}` is your Docker Hub username.
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## Deploying the app
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@ -133,75 +133,74 @@ During the creation of a Service, Knative performs the following steps:
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To deploy the app:
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=== "YAML"
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### YAML
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1. Create a new file named `service.yaml` and copy the following service definition
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into the file:
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1. Create a new file named `service.yaml` and copy the following service definition
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into the file:
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```yaml
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apiVersion: serving.knative.dev/v1
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kind: Service
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metadata:
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name: helloworld-java-spring
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namespace: default
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```yaml
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apiVersion: serving.knative.dev/v1
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kind: Service
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metadata:
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name: helloworld-java-spring
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namespace: default
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spec:
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template:
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spec:
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template:
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spec:
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containers:
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- image: docker.io/{username}/helloworld-java-spring
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env:
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- name: TARGET
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value: "Spring Boot Sample v1"
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```
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Where `{username}` is your Docker Hub username.
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containers:
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- image: docker.io/{username}/helloworld-java-spring
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env:
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- name: TARGET
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value: "Spring Boot Sample v1"
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```
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Where `{username}` is your Docker Hub username.
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**Note:** Ensure that the container image value in `service.yaml` matches the container you built in the previous step.
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**Note:** Ensure that the container image value in `service.yaml` matches the container you built in the previous step.
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1. Apply the YAML file by running the command:
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1. Apply the YAML file by running the command:
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```bash
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kubectl apply -f service.yaml
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```
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```bash
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kubectl apply -f service.yaml
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```
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=== "kn"
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### kn
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With `kn` you can deploy the service with
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With `kn` you can deploy the service with
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```bash
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kn service create helloworld-java-spring --image=docker.io/{username}/helloworld-java-spring --env TARGET="Spring Boot Sample v1"
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```
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This will wait until your service is deployed and ready, and ultimately it will print the URL through which you can access the service.
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```bash
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kn service create helloworld-java-spring --image=docker.io/{username}/helloworld-java-spring --env TARGET="Spring Boot Sample v1"
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```
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This will wait until your service is deployed and ready, and ultimately it will print the URL through which you can access the service.
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## Verification
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1. Find the domain URL for your service:
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=== "kubectl"
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```bash
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kubectl get ksvc helloworld-java-spring --output=custom-columns=NAME:.metadata.name,URL:.status.url
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```
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- For kubectl, run:
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Example:
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```bash
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kubectl get ksvc helloworld-java-spring --output=custom-columns=NAME:.metadata.name,URL:.status.url
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```
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```bash
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NAME URL
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helloworld-java-spring http://helloworld-java-spring.default.1.2.3.4.xip.io
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```
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Example:
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```bash
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NAME URL
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helloworld-java-spring http://helloworld-java-spring.default.1.2.3.4.xip.io
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```
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=== "kn"
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- For kn, run:
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```bash
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kn service describe helloworld-java-spring -o url
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```
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```bash
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kn service describe helloworld-java-spring -o url
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```
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Example:
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Example:
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```bash
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http://helloworld-java-spring.default.1.2.3.4.xip.io
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```
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```bash
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http://helloworld-java-spring.default.1.2.3.4.xip.io
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```
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1. Make a request to your app and observe the result. Replace
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the following URL with the URL returned in the previous command.
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@ -222,12 +221,12 @@ To deploy the app:
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To remove the sample app from your cluster, delete the service.
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=== "kubectl"
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```bash
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kubectl delete -f service.yaml
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```
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### kubectl
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```bash
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kubectl delete -f service.yaml
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```
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=== "kn"
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```bash
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kn service delete helloworld-java-spring
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```
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### kn
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```bash
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kn service delete helloworld-java-spring
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```
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