Updating Cluster Keys

Updated on 2024-10-11 GMT+08:00

View PDF

Scenario

When a cluster is installed, an encryption key is generated automatically to store the security information in the cluster (such as all database user passwords and key file access passwords) in encryption mode. After the cluster is successfully installed, you are advised to periodically update the encryption key based on the following procedure.

Impact on the System

After a cluster key is updated, a new key is generated randomly in the cluster. This key is used to encrypt and decrypt the newly stored data. The old key is not deleted, and it is used to decrypt data encrypted using the old key. After security information is modified, for example, a database user password is changed, the new password is encrypted using the new key.
When the key is updated, the cluster is stopped and cannot be accessed.

Prerequisites

The upper-layer applications depending on the cluster are stopped.

Procedure

Log in to MRS Manager and choose Services > More > Stop Cluster.

In the displayed dialog box, select I have read the information and understand the impact. Click OK. Wait until the system displays a message indicating that the operation is successful. Click Finish. The cluster is stopped successfully.
Log in to the active management node.
Run the following commands to switch the user:

sudo su - omm
Run the following command to disable logout upon timeout:

TMOUT=0
Run the following command to switch the directory:

cd ${BIGDATA_HOME}/om-0.0.1/tools

Run the following command to update the cluster key:

sh updateRootKey.sh

Enter y as prompted.

The root key update is a critical operation.
Do you want to continue?(y/n):

The key is updated successfully if the following information is displayed:

...
Step 4-1: The key save path is obtained successfully.
...
Step 4-4: The root key is sent successfully.

On MRS Manager, choose Services > More > Start Cluster.

In the displayed dialog box, click OK. After Operation successful is displayed, click Finish. The cluster is started.

Parent topic: Security Management

Previous topic: Replacing the HA Certificate

Next topic: Permissions Management

Feedback

Was this page helpful?

Helpful Not helpful

Provide feedback

Thank you very much for your feedback. We will continue working to improve the documentation.See the reply and handling status in My Cloud VOC.

The system is busy. Please try again later.

Which of the following issues have you encountered?

Content is inconsistent with the product UI

Unclear descriptions

Lack of examples or code

Incorrect steps

Can't find what I need

Lack of best practices

Feedback (optional)

0/500

Select at least one type of issue, and enter your comments or suggestions.

Enter a maximum of 500 characters.

Submit Cancel

For any further questions, feel free to contact us through the chatbot.

Chatbot