1m_successful.md 1.9 KB
Understand the alert
This alert is triggered when the percentage of successful HTTP requests (1xx, 2xx, 304, 401 response codes) within the last minute falls below a certain threshold. A warning state occurs when the success rate is below 85%, and a critical state occurs when it falls below 75%. This alert can indicate a malfunction in your web server's services, malicious activity towards your website, or broken links.
Troubleshoot the alert
Analyze response codes: Identify the specific HTTP response codes your web server is sending to clients. Use the Netdata dashboard and inspect the
detailed_response_codeschart for your web server to track the error codes being sent.Check server logs: Review the web server logs to identify any issues, patterns, or errors causing the decrease in successful requests. Investigate any unusual or unexpected response codes.
Inspect application logs: Check the logs of applications running on your web server for any errors or issues that might be affecting the success rate of HTTP requests.
Verify server resources: Ensure your server has adequate resources (CPU, RAM, disk space) to handle the workload, as resource limitations can impact the success rate of HTTP requests.
Review server configuration: Check your web server's configuration for any misconfigurations, incorrect permissions, or improper settings that may be causing the issue.
Monitor security: Look for signs of malicious activity, such as a high number of requests from a specific IP address or a sudden spike in requests. Implement security measures, such as rate limiting, IP blocking, or Web Application Firewalls (WAF), if necessary.