Create and manage app
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Create and manage app
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Available in VPC
This page explains information about the apps provided by Data Forest, and how to create and manage the apps. Data Forest offers 15 apps. All the apps can be executed with Docker containers, and users can use Data Forest for building a big data system optimized to their needs.
Note
For a description of the types of apps provided by Data Forest, see Prerequisites for using Data Forest.
Create app
The following describes how to create an app.
Create an account that will own the app.
- For how to create accounts, see Create and manage account.
From the NAVER Cloud Platform console, click the Services > Big Data & Analytics > Data Forest menu, in that order.
Click the Data Forest > Apps menu on the left.
Enter the details of the app you want to create on the basic settings screen.
Name Description Account name - The account that will own the app
- Select the account that will access the appApp type - Select app type to create
- GRAFANA-7.5.10 was selected in the exampleApp name - Designate the name of the app to create
- Minimum of 3 characters, maximum of 20 characters including account and app name
- Only English lowercase letters, numbers, and hyphens (-) are allowedUptime - Running time (seconds) of the created app before it is ended
- -1 (permanent), or 300 seconds (5 minutes) - 604,800 seconds (7 days)Version - The version that gets changed when the app configuration is edited
- The number increases every time the version changes
- Enter v1 upon creating an appQueue - Specify the YARN queue for running the app
- Longlived: public queue for service appApplication Master
vCPU- The number of vCPUs required for running Application Master (fixed value at 1 vCPU) Application Master
Memory- The memory required for running Application Master (fixed value at 4 GB) Component - The list of components that make up the app
- Basic components are fixed for each app type, and the user can only set component resources
- The default value is the recommended resourcesWhen settings are completed, click the [Next] button.
Enter the parameter values for the app you want to create on the user setting screen.
Name Description Parameters - List of configurable parameters of the app
- Parameters are fixed for setting each app type, and users can only set parameter values
- The default value is the recommended resourcesImport - Restore the settings of the same app previously created Reset - Reset the entered parameter values to default When settings are completed, click the [Next] button.
After final confirmation, click the [Create] button.
- 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.
Note
Uptime: the time elapsed from when the app is started to when it's closed.
It is created in 604,800 seconds (7 days) by default, and the app is killed after 7 days.
Check app details
The following describes how to check the app details.
From the NAVER Cloud Platform console, click the Services > Big Data & Analytics > Data Forest menu, in that order.
Click the Data Forest > Apps menu on the left. You can see the list of apps that the user executed.
Items Description App name The app's name Account The account that can access the app Status The app's status. Need to check app details even in Running status End Time The app's end time Elapsed Time The app's uptime Click
at the end of the app list to see the app details.
at the end of the app list to see the app details.
| Items | Description |
|---|---|
| App type | The app's type |
| Status | App status - ACCEPTED: the YARN scheduler has received a request to run the application - RUNNING: a state in which 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: a state in which the application has been normally terminated by a user's operation - STOPPED: application stopped. It can be restarted. It has the same application ID. - FAILED: creation of the application has failed. The failure may be due to an internal error. You can retry or submit a customer inquiry. - CHANGING: the application is being changed. It usually shows when the lifetime is being edited or flexed. The status changes to Running when the change is completed successfully. |
| App name | The app's name |
| Lifetime | The app's remaining uptime. The app is stopped when the app's uptime becomes 0 second. To extend the app's uptime, click the [Edit] button. |
| Version | The version that gets changed when the app configuration is edited The number increases every time the version changes. Enter v1 upon creating an app |
| Queue name | The queue selected when creating the app |
| Application ID | The application ID received after the app has been submitted to YARN |
| Account | The account that can access the app |
| User settings | Parameter values set in the app |
Note
- Even when the app list's Status is Running, it is possible that the app hasn't been started completely. To make sure all the containers that make up the app are running normally, you should check if Status under the app details is Stable.
- Status in the app list means the status of YARN Application, and Status in the app details means the status of YARN Service.
Check cluster access information
The following describes how to check the access information for each application type in a cluster.
- From the NAVER Cloud Platform console, click the Services > Big Data & Analytics > Data Forest menu, in that order.
- Click the Data Forest > Apps menu on the left.
- After selecting the created app, click Quick links > [View details of access information] in the app details.
- Check the access information for each application type in the cluster.
Manage apps
Kill application manager node
When an app has an issue and doesn't work normally, restart the Application Manager ([Kill AM]). You can assess the situation and normalize the app from the newly started AM.
- From the NAVER Cloud Platform console, click the Services > Big Data & Analytics > Data Forest menu, in that order.
- Click the Data Forest > Apps menu on the left.
- Select the account, and then the app.
- Click the [Kill AM] button in the view app details.
Adjust the number of containers
You can adjust the number of containers for each component.
The following describes how to change the number of containers in a component.
- From the NAVER Cloud Platform console, click the Services > Big Data & Analytics > Data Forest menu, in that order.
- Click the Data Forest > Apps menu on the left.
- Select an account and the app to adjust the number of containers, and then click the [Flex] button.
- When the pop-up window appears, edit the number of containers, and then click the [Edit] button.
Caution
Changing the number of containers requires appropriate measures such as backup because data may be lost. Only edit the number of containers when absolutely necessary.
Start the app
The following describes how to restart a closed app.
- From the NAVER Cloud Platform console, click the Services > Big Data & Analytics > Data Forest menu, in that order.
- Click the Data Forest > Apps menu on the left.
- Select an account and the app to start from the app list, and then click the [Start] button.
End the app
The following describes how to close down an app.
- From the NAVER Cloud Platform console, click the Services > Big Data & Analytics > Data Forest menu, in that order.
- Click the Data Forest > Apps menu on the left.
- Select an account and the app to close from the app list, and then click the [End] button.
Delete the app
The following describes how to delete an app.
- From the NAVER Cloud Platform console, click the Services > Big Data & Analytics > Data Forest menu, in that order.
- Click the Data Forest > Apps menu on the left.
- Select an account, and then check that the app to be deleted from the app list has been closed.
- The app needs to be closed before being deleted.
- Select the app to delete, and then click the [Delete] button.
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