Elasticsearch will not start with xpack.security.enabled: true running latest 7.12 version and basic license

Output of license
"type" : "basic",
Running small 3 node cluster with same elasticsearch.xml configs
xpack.security.enabled: true

Did you go over the minimal configurations?

I can't get that far. As soon as I enable xpack security and try to start elasticsearch, the start fails. Followed documention. Says I need to enable xpack.security.transport.ssl.enabled: even though I have the basic license.

Did you followed the tutorial on how to encrypt communications between the nodes? If you have more than one node and you are not using the trial license, your cluster will only work if you encrypt the communications between the nodes.

Since you stated that you are using the basic license, your cluster is failing the TLS/SSL bootstrap check

Follow this tutorial on how to create the certificates to encrypt the internode communications: Set up basic security for the Elastic Stack | Elasticsearch Guide [7.12] | Elastic

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