Deploy an app on Tanzu Application Platform

This topic guides you through deploying your first application on Tanzu Application Platform (commonly known as TAP) by using the Tanzu CLI, and optionally adding your application to the Tanzu Developer Portal software catalog.

This guide is a continuation from the previous step, Generate an application with Application Accelerator.

What you will do

Deploy an app using the Tanzu CLI.
View the build and runtime logs for your app.
View the web app in your browser.
(Optional) Add your application to Tanzu Developer Portal software catalog.

Prerequisites

Before you start, you must have:

Completed all Getting Started prerequisites.
Created a project. To do so, you can follow the steps in Generate an application with Application Accelerator.
Created a Git repository during the project creation stage. If the project does not have an associated Git repository, create a repository and update the workload.yaml the repository URL and branch.

Deploy your application using the Tanzu CLI

Complete the following steps to deploy your application using the Tanzu CLI.

Prerequisites

Ensure that you meet the following prerequisites:

Before you deploy your application using the Tanzu CLI, ensure that you have created a Git repository during the project creation stage.
If the project does not have an associated Git repository, you must create one, and then update the workload.yaml with the repository URL and branch.

Procedure

Deploy the Tanzu Java Web App project that you generated in Generate an application with Application Accelerator by running the tanzu apps workload create command:
```
tanzu apps workload create --file config/workload.yaml --namespace YOUR-NAMESPACE
```
Alternatively, you can create a workload using the command line:
```
tanzu apps workload create tanzu-java-web-app \
--git-repo GIT-REPO-URL \
--git-branch main \
--type web \
--label app.kubernetes.io/part-of=tanzu-java-web-app \
--label apps.tanzu.vmware.com/has-tests="true" \
--yes \
--namespace YOUR-NAMESPACE
```
Where:
- GIT-REPO-URL is the Git repository URL for where your project is stored. For example, https://github.com/vmware-tanzu/my-tanzu-java-web-app-project.
- YOUR-NAMESPACE is the namespace where workloads are deployed. For example, my-app-dev-namespace. This depends on your organization’s Tanzu Application Platform configuration. For more information, consult with your Tanzu Application Platform administrators.
For more information, see Create or update a workload.

View the build and runtime logs for your app by running the get command:

tanzu apps workload get tanzu-java-web-app --namespace YOUR-DEVELOPER-NAMESPACE

Where YOUR-DEVELOPER-NAMESPACE is the namespace configured earlier.

Note
To watch updates in real time, prepend watch -n1 to the tanzu apps workload get command to see the result update every second.

An example of the output from an early-stage deployment looks like the following:

Overview
    name:        tanzu-java-web-app
    type:        web
    namespace:   dev-namespace

Source
    type:     git
    url:      https://github.com/my-organization/tanzu-java-web-app
    branch:   main

Supply Chain
    name:   source-to-url

    NAME               READY     HEALTHY   UPDATED   RESOURCE
    source-provider    True      True      5s        gitrepositories.source.toolkit.fluxcd.io/tanzu-java-web-app
    image-provider     Unknown   Unknown   5s        images.kpack.io/tanzu-java-web-app
    config-provider    False     Unknown   8s        not found
    app-config         False     Unknown   8s        not found
    service-bindings   False     Unknown   8s        not found
    api-descriptors    False     Unknown   8s        not found
    config-writer      False     Unknown   8s        not found

Delivery
    name:   delivery-basic

    NAME              READY   HEALTHY   UPDATED   RESOURCE
    source-provider   False   False     2s        imagerepositories.source.apps.tanzu.vmware.com/tanzu-java-web-app-delivery
    deployer          False   Unknown   5s        not found

Messages
    Workload [MissingValueAtPath]:   waiting to read value [.status.latestImage] from resource [images.kpack.io/tanzu-java-web-app] in namespace [dev-namespace]
    Deliverable [HealthyConditionRule]:   Unable to resolve image with tag "my-instance.azurecr.io/tap/tanzu-java-web-app-dev-namespace-bundle:0da415bc-5d79-4d80-8ff1-0d27f42f871c" to a digest: HEAD https://my-instance.azurecr.io/v2/
    tap/tanzu-java-web-app-dev-namespace-bundle/manifests/0da415bc-5d79-4d80-8ff1-0d27f42f871c: unexpected status code 404 Not Found (HEAD responses have no body, use GET for details)

Pods
    NAME                                   READY   STATUS     RESTARTS   AGE
    tanzu-java-web-app-build-1-build-pod   0/1     Init:0/6   0          5s

After the workload is deployed, text similar to the following is displayed:

Overview
    name:        tanzu-java-web-app
    type:        web
    namespace:   dev-namespace

Source
    type:     git
    url:      https://github.com/my-organization/tanzu-java-web-app
    branch:   main

Supply Chain
    name:   source-to-url

    NAME               READY   HEALTHY   UPDATED   RESOURCE
    source-provider    True    True      5m26s     gitrepositories.source.toolkit.fluxcd.io/tanzu-java-web-app
    image-provider     True    True      4m30s     images.kpack.io/tanzu-java-web-app
    config-provider    True    True      4m24s     podintents.conventions.carto.run/tanzu-java-web-app
    app-config         True    True      4m24s     configmaps/tanzu-java-web-app
    service-bindings   True    True      4m24s     configmaps/tanzu-java-web-app-with-claims
    api-descriptors    True    True      4m24s     configmaps/tanzu-java-web-app-with-api-descriptors
    config-writer      True    True      4m12s     runnables.carto.run/tanzu-java-web-app-config-writer

Delivery
    name:   delivery-basic

    NAME              READY   HEALTHY   UPDATED   RESOURCE
    source-provider   True    True      3m23s     imagerepositories.source.apps.tanzu.vmware.com/tanzu-java-web-app-delivery
    deployer          True    True      3m17s     apps.kappctrl.k14s.io/tanzu-java-web-app

Messages
    No messages found.

Pods
    NAME                                         READY   STATUS      RESTARTS   AGE
    tanzu-java-web-app-build-1-build-pod         0/1     Completed   0          5m25s
    tanzu-java-web-app-config-writer-p47cg-pod   0/1     Completed   0          4m24s

Knative Services
    NAME                 READY   URL
    tanzu-java-web-app   Ready   https://tanzu-java-web-app.dev-namespace.apps.my-organization.com

After the workload is built and deployed, fetch the URL of the deployed app. The URL of the web app is in the Knative Services section at the bottom of the output of the tanzu apps workload get command:
```
tanzu apps workload get tanzu-java-web-app --namespace YOUR-DEVELOPER-NAMESPACE
```
Where YOUR-DEVELOPER-NAMESPACE is the namespace configured earlier.

The output looks similar to the following:
```
Knative Services
    NAME                 READY   URL
    tanzu-java-web-app   Ready   https://tanzu-java-web-app.dev-namespace.apps.my-organization.com
```
View the web app in your browser.

Add your application to Tanzu Developer Portal software catalog

Navigate to the home page of Tanzu Developer Portal and click Home, located on the left navigation pane.
Click REGISTER ENTITY.

Alternatively, you can add a link for the catalog-info.yaml to the tap-values.yaml configuration file in the tap_gui.app_config.catalog.locations section. For more information, see Installing the Tanzu Application Platform Package and Profiles.
Register an existing component prompts you to type a repository URL. Type the link to the catalog-info.yaml file of the tanzu-java-web-app in the Git repository text box. For example, https://github.com/USERNAME/PROJECTNAME/blob/main/catalog-info.yaml.
Click ANALYZE.
Review the catalog entities to be added and click IMPORT.
Navigate back to the home page. The catalog changes and entries are visible for further inspection.

Note
If your Tanzu Developer Portal instance does not have a PostgreSQL database configured, you must re-register the catalog-info.yaml location after the instance is restarted or upgraded.

Next steps

Now that you have your application deployed on your Tanzu Application Platform cluster, the next step is to iterate on your application.

If you are an IntelliJ user, see the Iterate on your new app using IntelliJ guide.
If you are a Visual Studio user, see the Iterate on your new app using Visual Studio guide.
If you are a VS Code user, see the Iterate on your new app using VS Code guide.