If the configuration of an Alibaba Cloud Elasticsearch cluster does not meet expectations, perform operations based on this topic.

The following table lists the modification method for each configuration item.
Warning If cluster release or subscription cancellation is required, we recommend that you back up your data before the release or subscription cancellation. For more information, see Commands for creating snapshots and restoring data. After the release or subscription cancellation, data on the cluster is deleted and cannot be restored.
Configuration item Modification method
Billing method
  • If you purchased a pay-as-you-go cluster, you can switch it to a subscription cluster. For more information, see Switch the billing method from pay-as-you-go to subscription.
  • If you purchased a subscription cluster, you cannot switch it to a pay-as-you-go cluster. In this case, we recommend that you cancel the subscription of the cluster and purchase another cluster as needed.
Version If you purchase an Elasticsearch V6.3.2 cluster but require an Elasticsearch V6.7.0 cluster, you can upgrade the cluster version. For more information, see Upgrade the version of a cluster. In other cases, we recommend that you cancel the subscription of or release the cluster and purchase another cluster as needed.
Region You cannot modify this configuration item. We recommend that you cancel the subscription of or release the cluster and purchase another cluster as needed.
Zone You can migrate nodes to the desired zone. For more information, see Migrate nodes in a zone.
Number of zones You cannot modify this configuration item. We recommend that you cancel the subscription of or release the cluster and purchase another cluster as needed.
Specifications You can modify this configuration item. For more information, see Upgrade the configuration of a cluster.
Storage type You cannot modify this configuration item. We recommend that you cancel the subscription of or release the cluster and purchase another cluster as needed.
Disk encryption You cannot modify this configuration item. We recommend that you cancel the subscription of or release the cluster and purchase another cluster as needed.
Storage space per node You can modify this configuration item. For more information, see Upgrade the configuration of a cluster.
Number of data nodes You can modify this configuration item. For more information, see Upgrade the configuration of a cluster.
Network type, VPC, and VSwitch You cannot modify these configuration items. We recommend that you cancel the subscription of or release the cluster and purchase another cluster as needed.
Note The network type of an Elasticsearch cluster can only be VPC.
Username The default username is elastic and cannot be changed. You can create a user in the Kibana console and grant the required permissions to the user. For more information, see Create a role and Create a user.
Password You can modify this configuration item. For more information, see Reset the access password for an Elasticsearch cluster.

For configuration items that are not provided in the preceding table, check whether you can modify the items on the configuration upgrade page. For more information, see Upgrade the configuration of a cluster.