Status 503
check_unavailable
The live check is unavailable
Why it happens
A live check or an appraisal started, and what it reads from did not answer.
What to do
Nothing was billed. Retry after Retry-After. Meanwhile GET /names/{name} answers the stored status.
Example
{
"type": "https://unique.domains/api/problems/check_unavailable",
"title": "The live check is unavailable",
"status": 503,
"detail": "The live check did not answer. Nothing was billed; retry in a minute.",
"instance": "/v1/names/harbor.io/check",
"code": "check_unavailable"
}