I recently upgraded 3 (of 9) nodes to new hardware. Since that time, one of the nodes (es02) is not visible in the Kibana "Monitoring" page. ALL nodes are visible via Elasticsearch Head plugin.
Based on earlier report from another user (aparently abandoned by the user), I will attach the results requested by one of the ES developers for that ticket.
In the results below, the nodes are es01,02,03,5,06,07,08,09, and hd3. The node that is not displaying is es02; the other new machines that are configured the same way and are working fine are es01 and es03. Please note that the node appears to be otherwise working fine.
Could you post all xpack.monitoring.* settings from one of your "good" node's elasticsearch.yml? Similarly, could you post all xpack.monitoring.* settings from one of your "bad" node's elasticsearch.yml?
[root@es01:/etc/elasticsearch]# grep xpack elasticsearch.yml
[root@es02:/etc/elasticsearch]# grep xpack elasticsearch.yml
(The commented out lines were tried based on suggestions found elsewhere)
** Please advise how/where to send the result files. I thought I could attach them here.