Client Management

Client nodes do not deploy cluster services, they only deploy clients for cluster-related services, including HDFS clients, Yarn clients, Hive clients, HBase clients, etc. Users can interact with the cluster such as submitting jobs through the client nodes. The stability of cluster services is ensured by separating the client environment from the cluster environment.

Click on the instance details and select “Client Management” Tab to enter the client management page.

Client List

The client list displays all in-use client instances, including node names, models, specifications, disk information, IP, etc:

You can add clients as needed or edit and change passwords for existing clients.

Add Client

Click “Add Client” to add a new client instance:

You can configure the client as needed, note:

• The client’s compute specifications and storage can be dynamically adjusted after creation;
• To ensure access security, do not use weak passwords.

Edit Node

Client nodes support the dynamic adjustment of compute specifications and storage. You can select the corresponding node and click “Edit Node” to enter the upgrade page:

The operations of upgrading specifications and modifying disk size are supported, as follows:

* Upgrade Specs: Modify the node’s CPU/Memory configuration, the node will be restarted during the upgrade, and downgrade of specifications is not currently supported.

* Modify Disk Size: Modify the size of the node’s disk, no need to restart the node during the upgrade.

Change Password

Client supports changing the password, you can click “Change Password” button to operate, as follows:

Notes:

• To ensure access security, do not use weak passwords.

Bind/Unbind EIP

If you need external network access to the client, click “Bind EIP” to bind the specified EIP, or you can click “Unbind EIP” button to turn off external network access.

Notes:

• When binding EIP, be sure to configure the firewall policy (see the following instructions for firewall binding) to prevent potential network attacks.

Bind Firewall

When binding EIP to clients, you can limit external network access by binding a firewall to ensure the security of client access. Specifically, click the “Bind Firewall” button for firewall switch.

Modifications to the firewall content can be made on the external network firewall page.

Delete Client

If you don’t need the client instance, click the “Delete” button to recycle it.

Notes:

• The deletion of client nodes is irreversible, please back up important data on the nodes before deletion.