Improve metrics for map and cache sizes #2291
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Use a more intuitive name. Signed-off-by: Anna Kapuscinska <anna@isovalent.com>
tetragon_map_capacity is a constant gauge exposing the capacity of BPF maps. It's useful to be used together with tetragon_map_entries to monitor the map pressure. Signed-off-by: Anna Kapuscinska <anna@isovalent.com>
The map capacity is now exaposed by tetragon_map_capacity metric. A separate metric is much easier to use in queries than a label on tetragon_map_entries metric. Signed-off-by: Anna Kapuscinska <anna@isovalent.com>
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Signed-off-by: Anna Kapuscinska <anna@isovalent.com>
There used to be a wrapper collector defined in the mapmetrics package. It was needed because there were a few packages (mis)using metrics defined there. Now it's cleaned up and only observer uses map metrics, so the wrapper collector is no longer needed. Signed-off-by: Anna Kapuscinska <anna@isovalent.com>
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tetragon_event_cache_entries is a gauge exposing the event cache size. Signed-off-by: Anna Kapuscinska <anna@isovalent.com>
There is a metric (tetragon_process_cache_size) defined in the process package, but it wasn't registered in the Prometheus registry, so it wasn't exposed. Fix this and register the metric. Signed-off-by: Anna Kapuscinska <anna@isovalent.com>
tetragon_process_cache_capacity exposes the capacity of the process cache. It's useful to be used together with tetragon_process_cache_size to monitor the process cache utilization. Signed-off-by: Anna Kapuscinska <anna@isovalent.com>
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mtardy
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Apr 11, 2024
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Fixes #1774