Mattermost Receiver For Alertmanager in Prometheus-Stack in K8S

Overview Since Prometheus-Stack Alertmanager doesn’t include Mattermost as a built-in receiver, we will integrate it using a webhook via creating a Python relay application that accepts Alertmanager webhook notifications, formats them into a Mattermost-compatible payload, and sends them to a Mattermost incoming webhook URL. Then we will deploy this relay inside Kubernetes using a Deployment and expose it with a Service so Alertmanager can reliably reach it. Finally, we will configure Alertmanager using an AlertmanagerConfig resource to define a new receiver and route, so alerts matching our rules (severity/namespace/etc.) get delivered to Mattermost through the relay. How Prometheus Alert Rules trigger alerts. Alertmanager processes and routes the alerts. Alertmanager sends webhook notifications to the Python Relay Service. The relay formats the alert payload. The relay forwards the formatted message to Mattermost Incoming Webhook. Steps Create an Incoming Webhook in Mattermost . This