--- title: "Create and manage app" slug: "df-app" tags: ["VPC", "Data Forest"] updated: 2026-09-17T09:17:40Z published: 2026-09-17T09:17:40Z canonical: "guide.ncloud-docs.com/df-app" stale: true --- > ## Documentation Index > Fetch the complete documentation index at: https://guide.ncloud-docs.com/llms.txt > Use this file to discover all available pages before exploring further. # Create and manage app Available in VPC This guide provides information about the apps available in Data Forest and explains how to create and manage them. Data Forest offers15 apps. Any app can run as a Docker container, and with Data Forest, you can build big data systems optimized for your users. Note For more information on the types of apps provided by Data Forest, see [Data Forest prerequisites](/docs/en/df-prep). ## Create an app To create an app, follow these steps: 1. Create an account to own the app. - To create an account, see [Create and manage accounts](/docs/en/df-account) 2. In the VPC environment on the NAVER Cloud Platform console, navigate to **Menu** > **All Services** > **Big Data & Analytics** > **Data Forest**. 3. Click **Data Forest** > **Apps** on the left. 4. Enter details about the app you want to create on the basic settings interface. ![df-app_2-1_vpc_ko](https://cdn.document360.io/6998976f-9d95-4df8-b847-d375892b92c2/Images/Documentation/df-app_2-1_vpc_en.png?sv=2026-02-06&spr=https&st=2026-11-14T04%3A50%3A25Z&se=2026-11-14T05%3A50%3A25Z&sr=c&sp=r&sig=XL9MH9iOMvkDFAF%2F6YQYV52PEjPubEpED9lNakED7Zs%3D) | Name | Description | | --- | --- | | **Account name** | - Account that owns the app. - Select the account to access the app. | | **App type** | - Select the app type to create. - In the example, **GRAFANA-7.5.10** is selected. | | **App name** | - Designate the name of the app to create. - Minimum of 3 characters, maximum of 20 characters including account and app name. - Only lowercase letters, numbers, and hyphens (-) are allowed. | | **Runtime** | - Duration (in seconds) that the created app runs before termination. - -1 (permanent) or 300 seconds (5 minutes) to 604,800 seconds (7 days). | | **Version** | - Version updates when the app configuration is modified. - Version number increments with each update. - Enter **v1** when creating an app. | | **Queue** | - Specify the [YARN queue](/docs/en/df-vpcvm) for running the app. - **Longlived**: shared queue for service apps. | | **Application Master** **vCPU** | - Number of vCPUs required to run the Application Master (fixed at 1 vCPU). | | **Application Master** **Memory** | - Amount of memory required to run the Application Master (fixed at 4 GB). | | **Component** | - List of components that make up the application. - Default components are predefined by application type, and only component resources can be configured by the user. - The default value is the recommended resources. | 5. When settings are completed, click **[Next]**. 6. On the user settings interface, enter the parameter values for the app you want to create. ![df-app_2-2_vpc_ko](https://cdn.document360.io/6998976f-9d95-4df8-b847-d375892b92c2/Images/Documentation/df-app_2-2_vpc_en.png?sv=2026-02-06&spr=https&st=2026-11-14T04%3A50%3A25Z&se=2026-11-14T05%3A50%3A25Z&sr=c&sp=r&sig=XL9MH9iOMvkDFAF%2F6YQYV52PEjPubEpED9lNakED7Zs%3D) | Name | Description | | --- | --- | | **Parameters** | - List of configurable parameters of the app. - Configurable parameters are predefined by app type, and users can set only parameter values. - The default value is the recommended resources. | | **Import** | Restore settings for the same app that you previously created. | | **Initialize** | Initialize entered parameter values to default. | 7. When settings are completed, click **[Next]**. 8. After finalizing the confirmation, click **[Create]**. - - For all apps, the application is submitted to YARN immediately upon creation request, and it takes about 1 to 2 minutes to complete the app creation. ![df-app_2-3_vpc_ko](https://cdn.document360.io/6998976f-9d95-4df8-b847-d375892b92c2/Images/Documentation/df-app_2-3_vpc_en.png?sv=2026-02-06&spr=https&st=2026-11-14T04%3A50%3A25Z&se=2026-11-14T05%3A50%3A25Z&sr=c&sp=r&sig=XL9MH9iOMvkDFAF%2F6YQYV52PEjPubEpED9lNakED7Zs%3D) Note Runtime: The duration from when the app starts running until it terminates. By default, the app is created with a runtime of 604,800 seconds (7 days), after which it is automatically terminated (killed). ## View app details To view app details: 1. In the VPC environment on the NAVER Cloud Platform console, navigate to **Menu** > **All Services** > **Big Data & Analytics** > **Data Forest**. 2. Click **Data Forest > Apps** on the left. You can view a list of the different apps that the user has run. ![df-app-control_01_vpc_ko(1)](https://cdn.document360.io/6998976f-9d95-4df8-b847-d375892b92c2/Images/Documentation/df-app-control_01_vpc_en.png?sv=2026-02-06&spr=https&st=2026-11-14T04%3A50%3A25Z&se=2026-11-14T05%3A50%3A25Z&sr=c&sp=r&sig=XL9MH9iOMvkDFAF%2F6YQYV52PEjPubEpED9lNakED7Zs%3D) | Item | Description | | --- | --- | | **App name** | The name of the app | | **Account** | Accounts that can access the app | | **Status** | App status. App details need to be checked even if it's running. | | **Start Time** | App start time | | **End Time** | App end time | | **Elapsed Time** | App runtime | 3. Click the ![df-app_open](https://cdn.document360.io/6998976f-9d95-4df8-b847-d375892b92c2/Images/Documentation/df-app_open.png?sv=2026-02-06&spr=https&st=2026-11-14T04%3A50%3A25Z&se=2026-11-14T05%3A50%3A25Z&sr=c&sp=r&sig=XL9MH9iOMvkDFAF%2F6YQYV52PEjPubEpED9lNakED7Zs%3D)at the end of the app list to view the app's details. ![df-app_3-4_vpc_ko](https://cdn.document360.io/6998976f-9d95-4df8-b847-d375892b92c2/Images/Documentation/df-app_3-4_vpc_en.png?sv=2026-02-06&spr=https&st=2026-11-14T04%3A50%3A25Z&se=2026-11-14T05%3A50%3A25Z&sr=c&sp=r&sig=XL9MH9iOMvkDFAF%2F6YQYV52PEjPubEpED9lNakED7Zs%3D) | Item | Description | | --- | --- | | **App type** | App type | | **Status** | App status - **CREATING**: The application is being created. When creation completes successfully, the status changes to RUNNING. - **ACCEPTED**: The YARN scheduler has received a request to run the application - **RUNNING**: Resources are allocated to the Application Master and the application is running. - **KILLED**: The application has been closed unexpectedly. It may terminate when Lifetime expires. - **FINISHED**: The application has completed successfully by user action. - **STOPPED**: The application is stopped. It can be restarted. It has the same application ID. - **FAILED**: The application creation has failed. The failure may be due to an internal error. Retry the operation or contact customer support. - **CHANGING**: The application is being modified. It usually shows when the lifetime is being edited or flexed. The status changes to RUNNING when the change is completed successfully. - **DELETING**: The application is being deleted by user action. | | **App name** | The name of the app | | **Lifetime** | The remaining runtime of the app. App stops when app runtime reaches `0` seconds. Click the **[Edit]** to extend the app's runtime. | | **Version** | Version updates when the app configuration is modified. Version number increments with each update. Enter **v1** when creating an app. | | **Queue name** | Selected queue when creating the app | | **Application ID** | Application ID received after the app was submitted to YARN | | **Account** | Accounts that can access the app | | **User settings** | Parameter values set in the app | Note - Even if the **Status** in the app list is **Running**, the app might not be finished running. To ensure that all the containers that make up your app are up and running, you must ensure that the **Status** in the app details is **Stable**. - The **Status** in the app list refers to the status of the [YARN Application](https://hadoop.apache.org/docs/r3.2.1/hadoop-yarn/hadoop-yarn-site/ResourceManagerRest.html#Cluster_Application_API), and the **Status** in the app details refers to the status of the [YARN Service](https://hadoop.apache.org/docs/en/r3.1.2/hadoop-yarn/hadoop-yarn-site/yarn-service/YarnServiceAPI.html#ServiceState). ## App management ### Shut down the Application Manager node If the app is having an issue or is not working properly, restart Application Manager (AM) (**[Kill AM]**). You can determine the status from the newly started AM and get the app back to normal. 1. In the VPC environment on the NAVER Cloud Platform console, navigate to **Menu** > **All Services** > **Big Data & Analytics** > **Data Forest**. 2. Click **Data Forest > Apps** on the left. 3. Select your account and choose an app. 4. Click the **[Kill AM]** to view the app details. ### Adjust the number of containers You can adjust the number of containers by component. To change the number of containers in a component, follow these steps: 1. In the VPC environment on the NAVER Cloud Platform console, navigate to **Menu** > **All Services** > **Big Data & Analytics** > **Data Forest**. 2. Click **Data Forest > Apps** on the left. 3. Select your account, select the apps you want to adjust the number of containers, and click the **[Flex]**. 4. When the popup window appears, edit the number of containers and click the **[Edit]**. ![df-app-control_04_vpc_ko](https://cdn.document360.io/6998976f-9d95-4df8-b847-d375892b92c2/Images/Documentation/df-app-control_04_vpc_en.png?sv=2026-02-06&spr=https&st=2026-11-14T04%3A50%3A25Z&se=2026-11-14T05%3A50%3A25Z&sr=c&sp=r&sig=XL9MH9iOMvkDFAF%2F6YQYV52PEjPubEpED9lNakED7Zs%3D) Caution Changing the number of containers may result in data loss, so take appropriate measures, such as backups, and only edit the number of containers if necessary. ### Start an app To restart an app that you've ended, follow these steps: 1. In the VPC environment on the NAVER Cloud Platform console, navigate to **Menu** > **All Services** > **Big Data & Analytics** > **Data Forest**. 2. Click **Data Forest > Apps** on the left. 3. Select your account, choose the app you want to start from the list of apps, and click the **[Start]**. ### End the app To close the app, follow these steps: 1. In the VPC environment on the NAVER Cloud Platform console, navigate to **Menu** > **All Services** > **Big Data & Analytics** > **Data Forest**. 2. Click **Data Forest > Apps** on the left. 3. Select your account, select the app you want to close from the list of apps, and click the **[Close]**. ### Delete an app To delete an app, follow these steps: 1. In the VPC environment on the NAVER Cloud Platform console, navigate to **Menu** > **All Services** > **Big Data & Analytics** > **Data Forest**. 2. Click **Data Forest > Apps** on the left. 3. Select the account and ensure the app you want to delete is closed in the app list. - Before you delete an app, you must quit the app. 4. Select the app you want to delete and click **[Delete]**.