Cannot load graylog web interface from fresh install

[tmacgbay]

@galcoChris

# List of Elasticsearch hosts Graylog should connect to.
# Need to be specified as a comma-separated list of valid URIs for the http ports of your elasticsearch nodes.
# If one or more of your elasticsearch hosts require authentication, include the credentials in each node URI that
# requires authentication.
#
# Default: http://127.0.0.1:9200
#elasticsearch_hosts = http://node1:9200,http://user:password@node2:19200

You need to point Graylog to your Elasticsearch/Opensearch servers here. ElasticSearch is where Graylog stores/queries messages after its done adjusting them. @joe.gross spotted this in a previous post. Not sure that would keep the interface from loading but things would not work properly without that connection.