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A critical failure of a production workload can carry a significant impact on a company, and it matters how soon the administrator or developers get notified. Even though Google Cloud offers powerful monitoring and alerting capabilities, sometimes projects require more than a standard email notification. Custom alert formatting, application-specific filtering, integration with external platforms, and automated responses all require additional processing logic. <br/><br/> Silent Watcher is a serverless, event-driven production alerting pipeline built using Google Cloud services. It monitors error logs generated by a production Compute Engine VM, filters them using Cloud Logging, routes relevant events through Pub/Sub, and triggers an ephemeral Cloud Run Function to process and deliver the alert to an external communication platform such as Discord or Slack.

Building a secure deployment pipeline is often seen by the developers as a hassle and an expensive process. In reality, many developers and small teams use unsafe methods such as copying files over SSH, by exposing port 22 to the internet or storing long-lived credentials in build pipelines. While these approaches are convenient, they introduce unnecessary security risks that can compromise production environments. <br><br/> This article leverages Google Cloud's FREE tier and BitBucket, Cloudflare FREE accounts to build Zero-Trust Zero-Cost Production Deployment Architecture.