Re: [Hawkular-dev] Availability metrics: aggregate stats series
I like the idea of aggregated availabilities, but I don’t know that it can easily be
simplified to up/down. Let’s say we have 3 Cassandra nodes deployed with
replication_factor = 1. If one node goes down we are at 66% availability.
On Aug 29, 2016, at 3:24 AM, Joel Takvorian
<jtakvori(a)redhat.com> wrote:
Hello all,
I'm still aiming to add some features to the grafana plugin. I've started to
integrate availabilities, but now I'm facing a problem when it comes to show
aggregated availabilities ; for example think about an OpenShift pod that is scaled up to
several instances.
Since availability is basically "up" or "down" (or, to simplify with
the other states such as "unknown", say it's either "up" or
"non-up"), I propose to add this new feature: availability stats with
aggregation. The call would be parameterized with an aggregation method, which would be
either "all of" or "any of": with "all of" we consider that
the aggregated series is UP when all its parts are UP.
It would require a new endpoint since the AvailabilityHandler currently only expose stats
queries with metric id as query parameter - not suitable for multiple metrics.
Any objection or remark for this feature?
Joel
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