Below Metrics need to be monitor in solarwinds for KNOG server
1. **Throughput**: Measure the number of requests being processed by Kong per unit of time. This helps assess the overall load on the system.
2. **Latency**: Monitor the time taken for Kong to process each request. High latency can indicate performance issues or bottlenecks in the system.
3. **Error Rates**: Keep track of the rate of errors occurring during request processing, such as 5xx server errors or other HTTP errors. High error rates may indicate issues with upstream services or misconfigurations in Kong.
4. **CPU Usage**: Monitor the CPU usage of Kong nodes to ensure they are not overloaded. High CPU usage can lead to degraded performance and increased response times.
5. **Memory Usage**: Track the memory usage of Kong processes to ensure they have enough memory available for efficient operation. Memory leaks or excessive memory usage can lead to crashes or performance degradation.
6. **Network Traffic**: Monitor incoming and outgoing network traffic to identify any spikes or anomalies that may indicate issues or attacks.
7. **Cache Hit Ratio**: If caching is enabled in Kong, monitor the cache hit ratio to ensure that cached responses are being served efficiently, reducing the load on upstream services.
8. **Connection Pool Usage**: If Kong is acting as a proxy, monitor the usage of connection pools to ensure that connections to upstream services are being managed efficiently.
9. **Plugin Performance**: If using plugins in Kong, monitor the performance impact of each plugin to identify any that may be causing performance bottlenecks.
10. **API Health Checks**: Monitor the health of upstream APIs using health checks to ensure that Kong is routing traffic only to healthy endpoints.
11. **Rate Limiting**: Monitor the rate limiting metrics to ensure that API usage is within defined limits and to detect any abuse or excessive usage.
12. **SSL Certificate Expiry**: If using SSL/TLS termination in Kong, monitor the expiry dates of SSL certificates to ensure they are renewed before expiration.
