Post Deployment Changes

Update the DNS Server on a Catalyst Center VA Using the AWS Console

To update the DNS server IP address configured on a Catalyst Center VA, use the consent token you obtained from Cisco TAC and follow the steps in this procedure.

Before you begin

Contact Cisco TAC to get a consent token to be able to get full shell access.

Procedure

Step 1

Log in to the AWS console.

Step 2

Choose EC2 > Instances.

Step 3

Choose the instance ID that you want to change and click Connect.

The Connect to instance page is displayed with the EC2 Instance Connect tab selected by default.

Step 4

Click the EC2 serial console tab.

The Catalyst Center VA instance ID and serial port are displayed.

Step 5

Click Connect.

The Maglev console is displayed.

Step 6

At the Login prompt, enter maglev as the username.

Step 7

At the Password prompt, enter the password that was configured during the initial deployment, regardless of whether you deployed your Catalyst Center VA using Cisco Global Launchpad, AWS CloudFormation, or AWS Marketplace.

Step 8

Gain full shell access by using the consent token that you obtained from Cisco TAC:

$ _shell -v consent-token

For example:

_shell -v n1+hPAAAAQ000AQAAAABAgAEAAAAAAMBYkk2bmhXcW14OGtqUXoy
a09UTXlzM252UnNlUnFwTEFEQVQvejJjQm9kNXloN2thSFk3MzZBek9CMEJRUUZad2QNCkhPNVZMNjhMUXMyb0h
1OXQ2eW1TR01yT1hwZkRPSmNuc1c2QUJ5ZGtVZ0N2OU1mMXZtTC90em1MNldWcVdjY2gNCkh3eEd5MytZWmRVUTN
kek1xOWNiWi9rLzVlTkozQ2RrYy9SMXEya2NOV09uMEdvZE11c1lZN01ENjZvVk5zZlMNCktseHZxTi9tVXF0cW1
vaG9NZFY4SnVOY3NBcXkxQkZOMzZHdS9XQ2N4S2tpdlNUV1VOTVVrRXU1TjVRUDl6d1YNCmYyWW1ZdUFnSGNOcnV
veUhoTzZYYjRIWnJWNDdxSG5qR0REUjV3TE90bnNXalpBL2tsRzNzN0lIa1ZaY0VzMVENCkVoc3FZUGU5Z2ZoTWF
6YXVKRmtxVmc9PQ==

Step 9

Set the terminal to display in color:

export TERM=xterm

Step 10

Run the sudo maglev-config update command.

The Configuration wizard presents an abbreviated version of the same series of screens shown in, for example, Configure a Secondary Node Using the Maglev Wizard in the Cisco DNA Center Second-Generation Appliance Installation Guide.

When the DNS server IP address setting is displayed, change the DNS server IP address to the preferred one. After you finish making changes on each screen, choose next>>, as needed, to proceed through the Configuration wizard.

Step 11

At the end of the configuration process, a message appears, stating that the Configuration wizard is now ready to apply your changes. The following options are available:

  • <<back: Review and verify your changes.

  • <cancel>: Discard your changes and exit the Configuration wizard.

  • proceed>>: Save your changes and begin applying them.

Step 12

To complete the change, choose proceed>>. The Configuration wizard applies the changes you made.

At the end of the configuration process, a CONFIGURATION SUCCEEDED! message appears.