Server errors (500–599)

https://aws.amazon.com/premiumsupport/knowledge-center/troubleshoot-http-5xx/

• HTTP 502 (Bad Gateway)
• HTTP 503 (Service Unavailable)
• HTTP 504 (Gateway Timeout)
• 526 Invalid SSL certificate

Related

• systemctl status php-fpm
• AWS Application Load Balancer (ALB)
• kubectl get ing
• Web troubleshooting

See also

• 5XX, 502, 503, 504, 526, Web troubleshooting
• List of HTTP status codes, 3XX, 4XX, 5XX, 503, HTTP response status code