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hubble: Add a metric for lost events #22865

Merged
merged 3 commits into from
Mar 30, 2023
Merged

hubble: Add a metric for lost events #22865

merged 3 commits into from
Mar 30, 2023

Commits on Mar 27, 2023

  1. hubble: Add a metric for lost events 

    Currently numbers of lost events are visible in logs and in the observer, but
they tend to be noisy and difficult to consume in such form. A Prometheus
counter is much more suitable for this kind of information, thus this patch
adds hubble_lost_events_total metric.

Fixes cilium#15112

Signed-off-by: Anna Kapuscinska <anna@isovalent.com>
    @lambdanis
    lambdanis committed Mar 27, 2023
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  2. hubble: Log number of lost messages on Debug level 

    The number of lost messages is now exposed as a metric, which is more practical
than a log, so the log level can be reduced. Also rephrased the log message, to
indicate only the fact that a LostEvent message was received - quite often the
queue will be full immediately after that, so saying that Hubble is "back to
nromal" can be misleading.

Signed-off-by: Anna Kapuscinska <anna@isovalent.com>
    @lambdanis
    lambdanis committed Mar 27, 2023
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  3. docs: Document hubble_lost_events_total metric 

    Signed-off-by: Anna Kapuscinska <anna@isovalent.com>
    @lambdanis
    lambdanis committed Mar 27, 2023
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