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PR description
Sometimes metrics are hard to poll (docker containers with varying ip
addresses). Because of that the push gateway exists. This extends the
metrics system to support push or pull mode for metrics (but not both
at the same time).
Three new flags
--metrics-mode=
<push
|pull
> - Whether we are in pull mode (the default) whereprometheus is expected to poll or push mode where pantheon pushes to
a push gateway.
--metrics-push-interval=
<integer> the frequency, in seconds, between pushes tothe push gateway. Only relevant in push mode
--metrics-prometheus-job=
<string> The name of the job to report in the push gatewayAlso,
--metrics-host=
and--metrics-port=
gain new meaning in push mode. Instead of theserver they are opening up it is the host and the port of the push gateway it should push to.