upstream backend { server 192.168.1.113; server 192.168.1.114; } server { listen 80; location / { proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header X-Forwarded-Proto $scheme; proxy_pass http://backend; } location /cable { proxy_pass http://backend/cable; proxy_http_version 1.1; proxy_set_header Upgrade websocket; proxy_set_header Connection Upgrade; proxy_set_header Host $http_host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; } }