Nginx is a high-performance HTTP server and reverse proxy, as well as an IMAP/POP3 proxy server. It is known for its stability, rich feature set, simple configuration, and low resource consumption. Nginx is widely used for serving static content, load balancing, and as a reverse proxy for handling incoming requests efficiently.
High CPU usage in Nginx can manifest as slow server response times, increased latency, or even server crashes if not addressed promptly. This symptom is often observed when monitoring server performance metrics, where CPU usage spikes significantly.
High CPU usage in Nginx can be attributed to several factors. Understanding these can help in diagnosing and resolving the issue effectively.
Addressing high CPU usage involves optimizing configurations, monitoring traffic, and implementing security measures. Below are actionable steps to mitigate this issue:
worker_processes and worker_connections settings in the nginx.conf file. For example: worker_processes auto;
worker_connections 1024; expires directive: location ~* \.(jpg|jpeg|png|gif|ico|css|js)$ {
expires 30d;
} limit_req_zone $binary_remote_addr zone=mylimit:10m rate=1r/s;
location / {
limit_req zone=mylimit burst=5;
} By optimizing Nginx configurations, monitoring traffic, and implementing security measures, you can effectively manage and reduce high CPU usage. For more detailed guidance, refer to the official Nginx documentation.
(Perfect for DevOps & SREs)
(Perfect for DevOps & SREs)
