HTTP 5xx Server Error Status Codes/HTTP 503 Service Unavailable

Temporarily unavailable or overloaded

Section: Codes 500-510

HTTP 503 Service Unavailable

text
text
curl -i https://example.com
Explanation

Often used during maintenance windows or overload conditions.

Learn the surrounding workflow

Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.

Related commands

Same sheet · prioritizing Codes 500-510
HTTP 500 Internal Server Error
Generic unexpected server failure
OpenIn sheettextsame section
HTTP 501 Not Implemented
Method or capability not implemented
OpenIn sheettextsame section
HTTP 502 Bad Gateway
Upstream sent invalid response
OpenIn sheettextsame section
HTTP 504 Gateway Timeout
Upstream did not respond in time
OpenIn sheettextsame section
HTTP 505 HTTP Version Not Supported
HTTP version unsupported
OpenIn sheettextsame section
HTTP 506 Variant Also Negotiates
Negotiation config loop
OpenIn sheettextsame section