I have a weird one.
When I try to load the settings page for the filebeat-* index pattern, no settings appear.
All I see is the Kibana lefthand menu and header.
If I load the metricbeat-* index pattern settings, I see the normal options.
I tried manually deleting the filebeat index pattern, then rerunning filebeat setup. It didn't help.
I am running Kibana 7.9.0 via docker, behind an Apache reverse proxy. With Firefox devtools open to the network tab, the only error code I see is a 413 for a PUT.
Copying from Firefox devtool gave me:
I watched the Kibana container logs while I navigated to the filebeat index pattern after restarting it, so I have those if needed.
My ES cluster is 3 nodes running 7.9.0. Installed via the official apt repos on Ubuntu 18.04.
One note, I have been noticing that loading dashboards from metricbeat is extremely slow. There is some mention of the filebeat index pattern in the devtools network tab. So I thought I should resovle the filebeat index pattern settings page issue before trying to diagnose why my dashboards are so slow...
Thanks in advance.