multi-pod-configmap.yaml

apiVersion: v1
kind: ConfigMap
metadata:
  name: mc3-nginx-conf
data:
  nginx.conf: |-
    user  nginx;                           # Set the user for the Nginx process to 'nginx'.
    worker_processes  1;                   # Configure one worker process for Nginx.
    error_log  /var/log/nginx/error.log warn;
                                           # Define the location for error logs.
    pid        /var/run/nginx.pid;
                                           # Define the location for the process ID file.
    events {                               # Configure event handling for Nginx.
        worker_connections  1024;          # Limit the number of connections per worker.
    }                                      # Close the 'events' block.

    http {                                 # Configure HTTP settings for Nginx.
        include       /etc/nginx/mime.types;
                                           # Include the MIME types configuration.
        default_type  application/octet-stream;
                                           # Set the default MIME type for responses.
        sendfile        on;                # Enable the use of sendfile for sending files efficiently.
        keepalive_timeout  65;             # Set the timeout for keep-alive connections.
        upstream webapp {                  # Define an upstream server named 'webapp'.
            server 127.0.0.1:5000;         # Configure the address and port of the upstream server.
        }                                  # Close the 'upstream' block.
        
        server {                           # Configure an HTTP server block.
            listen 80;                     # Listen on port 80 for incoming HTTP requests.
            location / {                   # Define a location block for the root path.
                proxy_pass         http://webapp;
                                           # Proxy incoming requests to the 'webapp' upstream server.
                proxy_redirect     off;    # Disable automatic redirection of proxy responses.
            }                              # Close the 'location' block.
        }                                  # Close the 'server' block.
    }                                      # Close the 'http' block.