Complete the following prerequisites before you install the external Elasticsearch nodes:
If you have installed the external nodes Elasticsearch 5.6.13 with Sentinel 8.3 or earlier versions, uninstall Elasticsearch, and then install Elasticsearch 7.10.2. For more information about installing, see Installing Elasticsearch.
Based on your EPS rate, deploy Elasticsearch in a cluster mode with the number of nodes and the number of replicas as recommended in Sentinel System Requirements.