Create and manage flow connections

Prerequisites

Before creating a flow connection in Monitoring Flow, you must add the IP address of the VPC to the inbound rules of the security group. If the VPC's IP is not registered in the inbound rules, the scenario steps will not function properly.

For more details, refer to Create security group.

Create flow connection

In Monitoring Flow, flow connection is created to connect internal KakaoCloud resources.

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• Only one VPC can be selected per flow connection.
  

1. Go to KakaoCloud Console > Management > Monitoring Flow > Flow connection.

2. Click the [Create flow connection] button.

3. In the pop-up window, enter the basic information for the flow connection and click the [Create] button.

   Item	Description
   Name	The flow connection name must be unique within the same project.
   VPC	Select one active subnet connected to the parent VPC. - VPCs already registered with flow connections cannot be selected. - The selected VPC range must be pre-registered in the security group (if not registered, the scenario steps will not function properly). - If no VPC is created, you will need to Create VPC.
   Subnet	Multiple subnets connected to the selected VPC can be selected - Only subnets in the 'Active' state can be selected.

Manage flow connections

Monitoring Flow allows access to internal KakaoCloud resources through flow connections.
Here’s how to manage flow connections in Monitoring Flow.

View flow connection list

You can view the list of flow connections and their basic information.

1. Go to KakaoCloud Console > Monitoring Flow.

2. In the Flow connection menu, check the list of flow connections created.

   Item	Description
   Name	The name of the flow connection set by the user
   ID	ID of the flow connection
   Connection status	Status of the connection between the subnet and the flow connection - Statuses include Active, Error, Pending, and the count of Active connections is displayed. - For more details, refer to Flow connection status.
   VPC	VPC connected to the flow connection
   Number of scenarios	Number of scenarios connected to the flow connection
   Last updated	Last modification date of the flow connection

View flow connection details

Check detailed information of flow connection, connected subnet channels, and linked scenarios.

1. Go to KakaoCloud Console > Monitoring Flow.

2. Select a flow connection to view.

3. View detailed information on the flow connection page.

   Item	Description
   Flow connection ID	Unique ID of the flow connection
   Connection status	Status of the connection between the subnet and the flow connection
   VPC	VPC connected to the flow connection

4. Check more detailed information in the corresponding tabs.

   Subnet channels

   You can check detailed information such as the subnet channel name, ID, availability zone, and connection status.

   Item	Description
   Subnet channel name	Name of the subnet registered in the VPC
   Availability Zone	A physically isolated space within a region where the VPC and subnets belong to a specific availability zone
   Connection status	Status of the connection between the subnet and the flow connection
   Disconnect	Remove subnet connected to the flow connection - Only subnets in Active or Error state can be deleted
   Connect subnet	Add subnet to the flow connection - Only subnets in Active state can be added

   Subnet channel status

   Status	Description	Classification
   Pending	Subnet channel is in progress of creation/modification/deletion	Grey
   Active	Subnet channel is in normal state	Green
   Error	Subnet channel creation/deletion failed or operation failed due to unexpected error	Red

   Scenario

   Check the scenario information registered with the flow connection. You can view and delete scenarios linked to the flow connection.

   Item	Description
   Scenario name	Name of the scenario set by the user
   Scenario ID	Unique ID of the scenario
   Last execution result	Result of the last scenario execution -Succeed, Failed - For detailed explanations of each status, refer to Scenario status.
   Last execution time	Last execution time of the scenario

   Scenario status

   Status	Description	Classification
   Succeeded	Last execution of the scenario was successful	Green
   Failed	Last execution of the scenario failed	Red

Rename flow connection name

You can modify the name of an existing flow connection.

1. Go to KakaoCloud Console > Monitoring Flow.
2. In the Flow connection menu, click the [Modify] button in the top right.
3. Modify the flow connection name.

Manage subnet connections

You can add or remove subnets connected to the flow connection.

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• When adding or removing subnets, the selected VPC cannot be modified. If VPC modification is required, Delete flow connection and then proceed.
• Depending on the connection status, adding or removing subnets may be temporarily unavailable.
  

1. Go to KakaoCloud Console > Monitoring Flow.

2. In the Flow Connection menu, click the flow connection name.

3. In the Subnet channels tab, check the connected subnets.

   • Please refer to Flow connection status for the connection status.

4. Click the [Connect subnet] button in the top right and configure the required fields for the subnet connection.

   Item	Description
   Name	Name of the flow connection set by the user
   VPC	VPC connected to the flow connection - If editing is needed, proceed after Delete flow connection
   Subnet	Subnet connected to the selected VPC - Already-selected subnets cannot be reselected - Subnets that are inactive cannot be selected - To remove a selected subnet, click [More] icon > Disconnect.

5. Click the [Create] button.

Delete flow connection

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• If there are any scenarios connected to the flow connection, you must disconnect the scenario before deleting the flow connection.
  
• Deleted flow connections cannot be recovered.

1. Go to KakaoCloud Console > Monitoring Flow.

2. In the Flow connection menu, click the [Delete] button in the top right.

   • For smooth deletion of the flow connection, disconnect the scenarios and subnets first.

3. Enter the name of the flow connection you want to delete and click the [Delete] button.