Open Search Security Not Initialized

Yes I have the same configuration to my master.yaml file @pablo

How do I set discovery.type: to single-node?

# These will be set as environment variable "node. Roles". E.g. node.roles=master,ingest,data,remote_cluster_client
roles:
  - master: "true"
  - ingest: "false"
  - data: "false"
  - remote_cluster_client: "false"

replicas: 1