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prometheusprometheus-operatorprometheus-node-exporter

Prometheus query to return Top 5 results

I am running a diskspace used query in Prometheus and would like to return only the top 5 or 10 entries from the search result. Is there anyway I can achieve that?

Currently, the query I am trying is returning me 58 entries

(100 - 100 * (node_filesystem_avail{device!~"by-uuid",device!~"tmpfs",mountpoint="/"} / node_filesystem_size{device!~"by-uuid",device!~"tmpfs",mountpoint="/"})) > 70
Solution

  • Just add topk(5, ...) in your query:

    topk(5, (100 - 100 * (node_filesystem_avail{device!~"by-uuid",device!~"tmpfs",mountpoint="/"} / node_filesystem_size{device!~"by-uuid",device!~"tmpfs",mountpoint="/"})) > 70)