Automated VPS Resource Monitoring and Alert System

This n8n workflow is designed to monitor the resource usage of a Virtual Private Server (VPS) and send automated email alerts when CPU, RAM, or disk usage exceeds defined thresholds. The workflow runs every 15 minutes, ensuring continuous oversight of server health. It begins with a schedule trigger that initiates the checks for CPU, RAM, and disk space via SSH commands on the server. Each resource check node retrieves the current usage statistics and outputs the data. These results are then merged into a single dataset for comparison. An ‘IF’ node evaluates whether any of the resource usages surpass the 80% threshold. If the threshold is exceeded, an email node is triggered, sending a notification to a specified email address with detailed resource usage information. Additionally, sticky notes are included as guidance for users to update email addresses and modify thresholds if necessary. This workflow is ideal for system administrators who need proactive alerts to prevent server overloads and maintain optimal server performance.