Resetting a Key Pair

If your private key is lost, you can use a new key pair to reconfigure the ECS through the management console. After resetting the key pair, you need to use the private key of the new key pair to log in to the ECS, and the original private key cannot be used to log in to the ECS.

This section describes how to reset a key pair on the KPS console.

Prerequisites

The ECS whose key pair is to be reset uses the public image provided by Huawei Cloud.
To reset the key pair, you can replace the public key of the user by modifying the /root/.ssh/authorized_keys file on the server. Ensure that the file is not modified before resetting the key pair. Otherwise, the reset will fail.
The ecs must be in the Shut down state.

Procedure

Log in to the management console.
Click in the upper left corner of the management console and select a region or project.
Click on the left. Choose Security & Compliance > Data Encryption Workshop.
In the navigation pane on the left, click Key Pair Service.
Click the ECS List tab, locate the target ECS in the list, and click Reset in the Operation column.The key pair reset dialog box is displayed, as shown in Figure 1.

Figure 1 Resetting a key pair
Select a new key pair from the drop-down list box of New Key Pair.
The default port number is 22 and can be modified.
Before using user-defined port, ensure that:
- The key pair can be connected to the ECS using the port. For details about how to modify the security group configuration of an ECS, see Configuring Security Group Rules.
- Modify the default port of the ECS and ensure that the port is enabled. For details, see Enhancing Security for SSH Logins to Linux ECSs.
Read and select I have read and agree to the Key Pair Service Disclaimer.
Click OK. The ECS key pair will be reset in about 10 minutes.