PMM-14748: remove "browser" timezone from dashboards

[fabio-silva]

PMM-14748

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 41.51%. Comparing base (b4e5544) to head (6e06f1e).

Additional details and impacted files

@@            Coverage Diff             @@
##               v3    #5301      +/-   ##
==========================================
+ Coverage   41.49%   41.51%   +0.01%     
==========================================
  Files         410      540     +130     
  Lines       41992    44339    +2347     
  Branches        0      584     +584     
==========================================
+ Hits        17424    18406     +982     
- Misses      22814    24114    +1300     
- Partials     1754     1819      +65     

Flag	Coverage Δ
admin	34.89% <ø> (ø)
agent	46.74% <ø> (+0.11%)	⬆️
unittests	41.32% <ø> (?)

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[Copilot]

Pull request overview

Removes explicit Grafana dashboard timezone setting of "browser" so dashboards rely on the default/org timezone behavior instead.

Changes:

• Update the dashboard cleanup script to write an empty timezone value instead of "browser".
• Replace "timezone": "browser" with "timezone": "" across the remaining affected dashboards (Valkey, PostgreSQL, OS, MySQL, MongoDB, Experimental, and QAN).

Reviewed changes

Copilot reviewed 33 out of 33 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
dashboards/misc/cleanup-dash.py	Aligns the cleanup script’s timezone normalization with the repo’s standard (empty string).
dashboards/dashboards/Valkey/Valkey_Slowlog.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/Valkey/Valkey_Replication.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/Valkey/Valkey_PersistenceDetails.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/Valkey/Valkey_Overview.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/Valkey/Valkey_Network.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/Valkey/Valkey_Memory.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/Valkey/Valkey_Load.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/Valkey/Valkey_CommandDetails.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/Valkey/Valkey_ClusterDetails.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/Valkey/Valkey_Clients.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/Query Analytics/pmm-qan.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/PostgreSQL/PostgreSQL_Top_Queries.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/PostgreSQL/PostgreSQL_Replication_Overview.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/PostgreSQL/PostgreSQL_Patroni_Details.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/PostgreSQL/PostgreSQL_Overview_Extended.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/PostgreSQL/PostgreSQL_Instances_Overview.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/PostgreSQL/PostgreSQL_Instance_Summary.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/PostgreSQL/PostgreSQL_Checkpoints_Buffers_WAL_Usage.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/OS/Node_Summary.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/OS/Disk_Details.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/MySQL/MySQL_Replication_Summary.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/MongoDB/MongoDB_Router_Summary.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/MongoDB/MongoDB_ReplSet_Summary.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/MongoDB/MongoDB_Oplog_Details.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/MongoDB/MongoDB_Instances_Overview.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/MongoDB/MongoDB_Instance_Summary.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/MongoDB/MongoDB_InMemory_Details.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/MongoDB/MongoDB_Collections_Overview.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/MongoDB/MongoDB_Cluster_Summary.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/MongoDB/MongoDB_Backup_Details.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/Experimental/Environments_Overview.json	Removes "browser" timezone from the dashboard metadata.
dashboards/dashboards/Experimental/DB_Cluster_Summary.json	Removes "browser" timezone from the dashboard metadata.

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[matejkubinec]

@fabio-silva we also need to update the dashboard guide - https://www.notion.so/percona/Dashboards-Grafana-dashboard-development-rules-b2c36a37e0594eea8b4156413ed4e2d1

[fabio-silva]

@fabio-silva we also need to update the dashboard guide - https://www.notion.so/percona/Dashboards-Grafana-dashboard-development-rules-b2c36a37e0594eea8b4156413ed4e2d1

Thanks! Updated rule 9 to leave timezone empty for consistency