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Added weighting of RPS metrics based on backend weights (#27)

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* Added weighting of rps metrics based on backend weights

Signed-off-by: Arjun Naik <arjun.rn@gmail.com>

* Updated documented with instructions on how to use the backend weighting

Signed-off-by: Arjun Naik <arjun.rn@gmail.com>

* Changed separator for RPS metric and added flag to specify backend weights annotation.

Signed-off-by: Arjun Naik <arjun.rn@gmail.com>

* Allow for multiple backends with for weighting.

Signed-off-by: Arjun Naik <arjun.rn@gmail.com>
This commit is contained in:
Arjun
2019-01-17 13:13:52 +01:00
committed by GitHub
parent f49f7821dc
commit 72aa672f51
5 changed files with 301 additions and 51 deletions
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6
pkg/server/start.go
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@ -98,6 +98,8 @@ func NewCommandStartAdapterServer(stopCh <-chan struct{}) *cobra.Command {
"path to the credentials dir where tokens are stored")
flags.BoolVar(&o.SkipperIngressMetrics, "skipper-ingress-metrics", o.SkipperIngressMetrics, ""+
"whether to enable skipper ingress metrics")
flags.StringArrayVar(&o.SkipperBackendWeightAnnotation, "skipper-backends-annotation", o.SkipperBackendWeightAnnotation, ""+
"the annotation to get backend weights so that the returned metric can be weighted")
flags.BoolVar(&o.AWSExternalMetrics, "aws-external-metrics", o.AWSExternalMetrics, ""+
"whether to enable AWS external metrics")
flags.StringSliceVar(&o.AWSRegions, "aws-region", o.AWSRegions, "the AWS regions which should be monitored. eg: eu-central, eu-west-1")
@ -159,7 +161,7 @@ func (o AdapterServerOptions) RunCustomMetricsAdapterServer(stopCh <-chan struct
// skipper collector can only be enabled if prometheus is.
if o.SkipperIngressMetrics {
skipperPlugin, err := collector.NewSkipperCollectorPlugin(client, promPlugin)
skipperPlugin, err := collector.NewSkipperCollectorPlugin(client, promPlugin, o.SkipperBackendWeightAnnotation)
if err != nil {
return fmt.Errorf("failed to initialize skipper collector plugin: %v", err)
}
@ -306,4 +308,6 @@ type AdapterServerOptions struct {
AWSRegions []string
// MetricsAddress is the address where to serve prometheus metrics.
MetricsAddress string
// SkipperBackendWeightAnnotation is the annotation on the ingress indicating the backend weights
SkipperBackendWeightAnnotation []string
}