Description

When the cluster resources are in short supply, the resources can be expanded.

Precautions

1. Node expansion will trigger data balancing. It is recommended to perform operations during non-business hours.
2. If it is a two-node cluster, you need to shut down all virtual machines and NFV devices in the cluster when expanding to a three-node cluster.
3. If the number of clustered nodes is greater than or equal to 3 and if the node is expanded at this time, it is necessary to stop the business.
4. Ensure that the authorization of the expanded platform is sufficient.
5. After enabling RDMA for a storage pool, the storage network interfaces of new nodes in the pool can only be replaced or expanded with interfaces that support RDMA.
6. If the message “The current cluster's licensing is the enterprise version. It is not supported to add test devices to the cluster. Please contact Sangfor customer service if necessary.” prompt when a cluster is added. In this case, the current node does not have the signature of the test device, and the node to be added was signed, which caused the two devices to be inconsistent.  Solution: Contact Sangfor technical support to sign the device that the test device has not signed, and then re-scan the code to apply for the Licensing.

Prerequisites

1. Plan the IP addresses of each network plane of the expansion node.
2. The aSV software has been installed on the expansion node and is the same as the original version (including patches), and the management IP has been set.
3. The management interface, overlay network interface, service port, and storage port of the expansion node have been correctly connected to the network.

Steps

1. Click Add New Node in Nodes.

2. Select the node to be added. If the node to be added is not in the list, click + to add it. When prompted that the firewall configuration will be cleared, click OK.
3. If the prompt that the MTUs of the overlay network interface between the nodes are inconsistent, click Configure Now and check Enable interface high-performance mode checkbox. The overlay network interface and the incoming interface can be adjusted according to the actual network environment.
4. Navigate to Storage > Virtual Storage, and click Expand Capacity.

5. According to the actual network, select the virtual storage communication network deployment mode.
6. Select the appropriate storage network port and configure the IP.
7. Click Expand Capacity again to select the virtual datastore that needs to be expanded by the node.

8. For disk configuration, it is recommended to use SSD as the cache disk and HDD as the data disk and spare disk.

When the HDD is set as a spare disk in version 5.8.7R1, the HDD must be removed from the hard disk group first and then set as a spare disk.

9. Enter the name of the virtual datastore to be expanded and the administrator password of the admin to confirm the configuration.
10. After the expansion, perform Healthcheck to confirm that the cluster is running normally.