Metricbeat dashboard sudden issue

Hi All,

I had set up metricbeat 8.7 on Linux hosts and dashboards for "system" as well as "Apache" modules started showing up fine.

It kept running for almost 2 weeks without issues. This morning all of a sudden I noticed few portions of the dashboard complaining as follows:

Fielddata is disabled on [system.network.name] in [.ds-metricbeat-8.7.0-2024.07.15-000001]. Text fields are not optimised for operations that require per-document field data like aggregations and sorting, so these operations are disabled by default. Please use a keyword field instead. Alternatively, set fielddata=true on [system.network.name] in order to load field data by uninverting the inverted index. Note that this can use significant memory.
Fielddata is disabled on [host.name] in [.ds-metricbeat-8.7.0-2024.07.15-000001]. Text fields are not optimised for operations that require per-document field data like aggregations and sorting, so these operations are disabled by default. Please use a keyword field instead. Alternatively, set fielddata=true on [host.name] in order to load field data by uninverting the inverted index. Note that this can use significant memory.

Please see how Kibana shows it as below:

There was no manual steps performed other than the following:

  1. system (default) and apache modules were enabled.
  2. apache yml file was updated
  3. ./metricbeat setup -e was executed successfully
  4. metrcibeat started

Please help and guide