I needed to check the payload my alertmanager in OpenShift was sending out to the target-system (which was not under my control and I couldn’t check what was received).

There is some documentation online. However at the time of writing, the example in the documentation was not usable out-of-the-box since there was a route (or ingress) missing. I also wanted a fully-featured webhook-tester that showed me the received payload in a nice webfrontend. The webhook-tester from tarampampam fullfills my need.

So, here is the full app, including the Deployment, a Route and the Service:

apiVersion: apps/v1
kind: Deployment
metadata:
name: debug-receiver
spec:
replicas: 1
strategy:
type: Recreate
selector:
matchLabels:
app: debug-receiver
template:
metadata:
labels:
app: debug-receiver
spec:
containers:
- image: tarampampam/webhook-tester
name: webhook-tester
---
apiVersion: v1
kind: Service
metadata:
labels:
app: debug-receiver
name: debug-receiver
spec:
ports:
- name: alert-debug-receiver
port: 8080
protocol: TCP
targetPort: 8080
selector:
app: debug-receiver
sessionAffinity: None
type: ClusterIP
---
apiVersion: route.openshift.io/v1
kind: Route
metadata:
labels:
app: debug-receiver
name: debug-receiver
spec:
port:
targetPort: alert-debug-receiver
tls:
termination: edge
to:
kind: Service
name: debug-receiver
weight: 100
wildcardPolicy: None