Question regarding ES upgrade to 8.1

We are using ES version 6.8.12 and would want to upgrade to ES version 8.1. As per our architecture we can have Elasticsearch deployed on either one node or two nodes. Since 8.1 doesn't allow forming a cluster with two nodes, can we deploy ES independently on both the nodes instead of forming a cluster and manually write data to both the ES nodes independently. Please let us if this solution works and is there a better way for having ES instances on only two nodes.


to me having two nodes that take the same data for indexing sounds like a huge operational burden. Maybe having a lightweight voting only node in addition is an easier task? See Node | Elasticsearch Guide [8.1] | Elastic


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