I have added the haproxy_exporter and prometheus-to-sd containers as side-cars
to my haproxy deployment in a non-default namespace. I am seeing the metric I
want in Metrics Explorer as well and can graph over time/ under load. So, the
data is getting out of the pod. I can also verify the metric I want is here:
kubectl get --raw "/apis/custom.metrics.k8s.io/v1beta1/" | jq .
{
"name": "*/haproxy_frontend_current_session_rate",
"singularName": "",
"namespaced": true,
"kind": "MetricValueList",
"verbs": [
"get"
]
},
apiVersion: autoscaling/v2beta1
kind: HorizontalPodAutoscaler
metadata:
name: proxy-hpa
namespace: edge
labels:
chart: "{{.Chart.Name}}-{{.Chart.Version}}"
spec:
scaleTargetRef:
apiVersion: apps/v1beta1
kind: Deployment
name: proxy-deployment
minReplicas: {{.Values.hpa.minReplicas}}
maxReplicas: {{.Values.hpa.maxReplicas}}
metrics:
- type: Pods
pods:
metricName: haproxy_frontend_current_session_rate
targetAverageValue: 2
(it's a low target value, as this is a test to show that HPA for custom metrics
works)
I get the following error condition:
Conditions:
Type Status Reason Message
---- ------ ------ -------
AbleToScale True SucceededGetScale the HPA controller was able to
get the target's current scale
ScalingActive False FailedGetPodsMetric the HPA was unable to compute the
replica count: unable to get metric haproxy_frontend_current_session_rate:
unable to fetch metrics from API: the server could not find the metric
haproxy_frontend_current_session_rate for pods
What I believe is happening is that the hpa is being created (correctly) in the
unique namespace, but the metrics it wants is in the default namespace (or
kube-system namespace).
Am I interpreting that correctly? Any way around that?
TIA,
Robby Morris
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