Fixes and Problem Resolutions

[RenJiangZhou2163]

1. Grafana Storage Mount and Volume Adjustment

   • Removed the ./log - analyser/grafana:/var/lib/grafana mount. Instead, a named volume grafana - storage:/var/log/grafana was added to store Grafana data. Leveraging Docker's named volume approach enhances isolation and data persistence.
   • Resolved Error:

     grafana-1  | GF_PATHS_DATA='/var/lib/grafana' is not writable.
     grafana-1  | You may have issues with file permissions, more information here: http://docs.grafana.org/installation/docker/#migrate-to-v51-or-later
     grafana-1  | mkdir: can't create directory '/var/lib/grafana/plugins': Permission denied
     

     The previous mount led to permission - related write issues in the /var/lib/grafana directory. By switching to a named volume, these permission problems are effectively resolved.

2. Grafana Datasource Provisioning Mount Addition

   • Added the mount ./log - analyser/grafana - provisioning/datasources/:/etc/grafana/provisioning/datasources/. This enables the automatic loading of Grafana data source configurations during startup.
   • Resolved Error:

     Datasource xxx was not found
     

     Without this mount, Grafana was unable to locate the specified data source configurations. The new mount ensures that the necessary configurations are available and can be loaded properly.

3. Loki Datasource isDefault Attribute Update

   • In the Loki datasource configuration, the isDefault attribute has been modified from true to false, meaning Loki is no longer set as the default datasource.
   • Resolved Error:

     Error: ✗ Datasource provisioning error: datasource.yaml config is invalid. Only one datasource per organization can be marked as default
     

     The previous setting where multiple data sources might have been marked as default (or conflicting default settings) caused the configuration to be invalid. Changing Loki's isDefault attribute to false resolves this conflict and ensures the validity of the datasource.yaml configuration.

[saghul]

LGTM at a glance. Can someone else also PTAL? @aaronkvanmeerten maybe?