# Edit OpenSearch Cluster

On each OpenSearch Cluster, you can edit certain parameters, specifically:

* [Increase number of nodes](https://docs.vngcloud.vn/vng-cloud-document/vdb/opensearch-cluster-database-ods/cac-tinh-nang-cua-opensearch-cluster/chinh-sua-opensearch-cluster/tang-so-luong-node)
* [Change node IOPS parameters](https://docs.vngcloud.vn/vng-cloud-document/vdb/opensearch-cluster-database-ods/cac-tinh-nang-cua-opensearch-cluster/chinh-sua-opensearch-cluster/thay-doi-thong-so-iops-cua-node)
* [Resize node disk size](https://docs.vngcloud.vn/vng-cloud-document/vdb/opensearch-cluster-database-ods/cac-tinh-nang-cua-opensearch-cluster/chinh-sua-opensearch-cluster/tang-giam-kich-thuoc-o-dia-cua-node)
* [Change master account password](https://docs.vngcloud.vn/vng-cloud-document/vdb/opensearch-cluster-database-ods/cac-tinh-nang-cua-opensearch-cluster/chinh-sua-opensearch-cluster/thay-doi-mat-khau-tai-khoan-master)

For detailed steps, please refer to the sections below.