kube-prometheus-stack unable to detect alertmanager config

[nkalvakuntla]

Here is my helm values.yaml. Even with configmatcher strategy set to None , don't see the config updated . Appreciate your inputs. Thanks.

helm list
NAME NAMESPACE REVISION UPDATED STATUS CHART APP VERSION
kube-prometheus monitoring 1 2025-02-12 14:13:39.883599056 -0500 EST deployed kube-prometheus-stack-69.2.2 v0.80.0

prometheus:
prometheusSpec:
podMonitorSelectorNilUsesHelmValues: false
serviceMonitorSelectorNilUsesHelmValues: false

alertmanager:
alertmanagerSpec:
alertmanagerConfigNamespaceSelector:
alertmanagerConfigSelector:
matchLabels:
release: kube-prometheus
alertmanagerConfigMatcherStrategy:
type: None

apiVersion: monitoring.coreos.com/v1alpha1
kind: AlertmanagerConfig
metadata:
name: slack-config
namespace: monitoring
labels:
release: kube-prometheus
spec:
route:
groupBy: ["alertname", "severity"]
groupWait: 30s
groupInterval: 5m
repeatInterval: 12h
receiver: "slack"
receivers:
- name: slack
slackConfigs:
- apiURL:
name: slack-webhook-url
key: webhook-url
channel: "#nick-test"
sendResolved: true
title: "{{ range .Alerts }}{{ .Annotations.summary }}\n{{ end }}"
text: "{{ range .Alerts }}{{ .Annotations.description }}\n{{ end }}"

[nkalvakuntla]

Don't see any errors in alertmanager pod.