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How do I delete all data?

I tried:

  • Using the HTTP API.

    Deleting a series with a match operator such as

    curl -X POST -g 'http://localhost:9090/api/v1/admin/tsdb/delete_series?match[]={job="BR"}'
    

    works, but matching all series somehow doesn't. I tried:

    curl -X POST -g 'http://localhost:9090/api/v1/admin/tsdb/delete_series?match[]={}'
    curl -X POST -g 'http://localhost:9090/api/v1/admin/tsdb/delete_series?match[]={job=~".+"}'
    curl -X POST -g 'http://localhost:9090/api/v1/admin/tsdb/delete_series?match[]={__name__=~".+"}'
    

    Both return without error, but the data remains unaffected.

  • Delete the data directory. Valid workaround, but requires prometheus to restart in order to become visible in grafana, which takes a long time, and I'm pretty sure that's not the intended way of doing it

Sources: 1, 2, 3, 4

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