Technical requirements

To use machine learning features, ensure that the Elasticsearch cluster contains at least one node with the role ml. This enables the running of machine learning jobs on the cluster:

• If you're running with default settings on a single node, this role should already be enabled, and no further configuration is necessary.
• If you're running nodes with custom roles, ensure the role is added to elasticsearch.yml, as follows:

  node.roles: [data, ml]