[stacked 1/5] metrics: cleanup metrics registration, collection and gathering. #403
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Rework our metrics collector registry to take care of most of the necessary bits for metrics registration, collection and gathering. Use the prometheus-provided namespacing and subsystems to put all generated metrics under a prefix and provide additional grouping. Signed-off-by: Krisztian Litkey <[email protected]>
Update cgroupstats collector for the reworked metrics registry. Split out automatic registration to a register subpackage. Signed-off-by: Krisztian Litkey <[email protected]>
Remove the old resmgr-triggered polling of policy metrics and the old resmgr-level polling policy metrics collector. Implement policy metrics collection in the policy package itself. Signed-off-by: Krisztian Litkey <[email protected]>
Remove the old opencensus-based prometheus exporter. Rework prometheus exporting using our update metrics registry and a promhttp /metrics-handler. Signed-off-by: Krisztian Litkey <[email protected]>
Add configuration bits for controlling which metrics are collected. Enable collection of policy metrics by default. Signed-off-by: Krisztian Litkey <[email protected]>
Remove obsolete and unused option entries. Give a warning about using the now-obsolete '-metrics-interval' argument. It's used unconditionally by our existing Helm charts, so we'll phase it out a bit more gently. Signed-off-by: Krisztian Litkey <[email protected]>
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This patch series refactors our metrics collection code, moving most of the code to handle metrics registration, collection, and gathering into a single package in
pkg/metrics. In particular, this seriespkg/metricsresmgr,resmgr/{metrics,policycollector}policypackage itselfopencensustopromhttpfor metrics exporting inpkg/instrumentation