How to fix logstash error Unable to retrieve license information from license server
Once you started your logstash server, you could probably get this kind of error:
Unable to retrieve license information from license server
{:message=>"Elasticsearch Unreachable:[http://elasticsearch:9200/][Manticore::ResolutionFailure] elasticsearch"}
[ERROR][logstash.monitoring.internalpipelinesource] Failed to fetch X-Pack information from Elasticsearch.
This is likely due to failure to reach a live Elasticsearch cluster.There is a quick fix, just add
XPACK_MONITORING_ENABLED=false
in your env variables and this error will disappear.