Fixed in Teleport v14 (via PR #27761, released in 14.0.0), two reporters confirmed the 501s on POST/XHR went away after upgrading to v14, with no extra reverse proxy needed. If you are on v13 or earlier and see 501s on proxied POST requests, upgrade to v14+. Source: https://github.com/gravitational/…
Fixed in Teleport v14 (via PR #27761, released in 14.0.0), two reporters confirmed the 501s on POST/XHR went away after upgrading to v14, with no extra reverse proxy needed. If you are on v13 or earlier and see 501s on proxied POST requests, upgrade to v14+. Source: https://github.com/gravitational/…