504 Gateway Timeout / CORS problem

504 Gateway Timeout 서버 에러 응답 코드는 서버가
게이트웨이(gateway) 혹은 프록시(proxy)의 역할을 하는 동안 시간 안에 업스트림 서버(upstream server)로부터 요청을 마치기 위해 필요한 응답를 받지 못 했음
https://blog.lael.be/post/9251 - 설정좋음

Access to fetch at 'http://qt2-kic.channel.lgtvcommon.com/api/region/Global/status/S/update' from origin 'http://localhost:3000' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource. If an opaque response serves your needs, set the request's mode to 'no-cors' to fetch the resource with CORS disabled.
https://stackoverflow.com/questions/22665232/what-can-cause-chrome-to-give-an-neterr-failed-on-cached-content-against-a-ser
https://developer.mozilla.org/ko/docs/Web/HTTP/CORS

2021-01-13 01:05:20.507 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|> POST /api/region/Global/status/S/update
2021-01-13 01:05:20.507 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|> host: dev.channel.lgtvcommon.com
2021-01-13 01:05:20.507 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|> accept: /
2021-01-13 01:05:20.507 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|> accept-encoding: gzip, deflate, br
2021-01-13 01:05:20.507 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|> accept-language: ko-KR,ko;q=0.9,en-US;q=0.8,en;q=0.7
2021-01-13 01:05:20.507 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|> authorization: Bearer eyJhbGciOiJIUzUxMiJ9.eyJzdWIiOiIxIiwiaWF0IjoxNjEwNDk4NjA5LCJleHAiOjE2MTExMDM0MDl9.qqaJFk0-hysF8bMA1VxiWDB_f8d6rF_3N_lWHnJ3N8Z0D6ha7og994FoMf4r8N6bv4wGX-gKjPNlmfMAxpqiEQ
2021-01-13 01:05:20.507 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|> content-type: application/json
2021-01-13 01:05:20.507 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|> origin: https://dev.channel.lgtvcommon.com
2021-01-13 01:05:20.507 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|> referer: https://dev.channel.lgtvcommon.com/HOME-APP/tab
2021-01-13 01:05:20.507 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|> sec-fetch-dest: empty
2021-01-13 01:05:20.507 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|> sec-fetch-mode: cors
2021-01-13 01:05:20.507 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|> sec-fetch-site: same-origin
2021-01-13 01:05:20.507 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|> user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.141 Safari/537.36
2021-01-13 01:05:20.507 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|> x-forwarded-for: 27.122.242.72
2021-01-13 01:05:20.507 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|> x-forwarded-port: 443
2021-01-13 01:05:20.507 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|> x-forwarded-proto: https
2021-01-13 01:05:20.507 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|> content-length: 0
2021-01-13 01:05:20.507 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|> connection: keep-alive
2021-01-13 01:05:20.507 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|>
2021-01-13 01:05:20.512 [http-nio-8180-exec-10] INFO c.l.c.c.a.HomeAppAdminController - #updateAllByRegionAndStatus|currentUser=com.lge.cdp.security.UserPrincipal@20
2021-01-13 01:05:20.512 [http-nio-8180-exec-10] INFO c.l.c.c.a.HomeAppAdminController - #updateAllByRegionAndStatus|currentUser=com.lge.cdp.security.UserPrincipal@20
2021-01-13 01:07:07.461 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|< 200 OK
2021-01-13 01:07:07.461 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|< Vary: Origin
2021-01-13 01:07:07.461 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|< Vary: Access-Control-Request-Method
2021-01-13 01:07:07.461 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|< Vary: Access-Control-Request-Headers
2021-01-13 01:07:07.461 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|< Vary: Origin
2021-01-13 01:07:07.461 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|< Vary: Access-Control-Request-Method
2021-01-13 01:07:07.461 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|< Vary: Access-Control-Request-Headers
2021-01-13 01:07:07.461 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|< Vary: Origin
2021-01-13 01:07:07.461 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|< Vary: Access-Control-Request-Method
2021-01-13 01:07:07.461 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|< Vary: Access-Control-Request-Headers
2021-01-13 01:07:07.461 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|< Access-Control-Allow-Origin: *
2021-01-13 01:07:07.461 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|<
2021-01-13 01:07:07.461 [http-nio-8180-exec-10] INFO c.l.c.f.LoggingFilter - 10.150.35.221|< {"result":"ok"}

2021-01-12 07:40:02.502 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|> POST /api/region/Global/status/S/update
2021-01-12 07:40:02.502 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|> host: qt2-kic.channel.lgtvcommon.com
2021-01-12 07:40:02.502 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|> accept: /
2021-01-12 07:40:02.502 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|> accept-encoding: gzip, deflate
2021-01-12 07:40:02.503 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|> accept-language: ko-KR,ko;q=0.9,en-US;q=0.8,en;q=0.7
2021-01-12 07:40:02.503 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|> authorization: Bearer eyJhbGciOiJIUzUxMiJ9.eyJzdWIiOiIxIiwiaWF0IjoxNjEwNDM2OTg3LCJleHAiOjE2MTEwNDE3ODd9.LCAurM4nLxlHQI0dqtPFlh2H-r8cRSuxN1ytpFsntr9CwInUfHqjCXW-J15GFwHpfaXJyr0F0O8ECHzMdSEnRw
2021-01-12 07:40:02.503 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|> content-type: application/json
2021-01-12 07:40:02.503 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|> origin: http://localhost:3000
2021-01-12 07:40:02.503 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|> referer: http://localhost:3000/
2021-01-12 07:40:02.503 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|> user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36
2021-01-12 07:40:02.503 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|> x-forwarded-for: 27.122.242.72
2021-01-12 07:40:02.503 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|> x-forwarded-port: 80
2021-01-12 07:40:02.503 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|> x-forwarded-proto: http
2021-01-12 07:40:02.503 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|> content-length: 0
2021-01-12 07:40:02.503 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|> connection: keep-alive
2021-01-12 07:40:02.503 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|>
2021-01-12 07:40:02.507 [http-nio-8180-exec-9] INFO c.l.c.c.a.HomeAppAdminController - #updateAllByRegionAndStatus|currentUser=com.lge.cdp.security.UserPrincipal@20
2021-01-12 07:41:48.838 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|< 200 OK
2021-01-12 07:41:48.839 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|< Vary: Origin
2021-01-12 07:41:48.839 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|< Vary: Access-Control-Request-Method
2021-01-12 07:41:48.839 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|< Vary: Access-Control-Request-Headers
2021-01-12 07:41:48.839 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|< Vary: Origin
2021-01-12 07:41:48.839 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|< Vary: Access-Control-Request-Method
2021-01-12 07:41:48.839 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|< Vary: Access-Control-Request-Headers
2021-01-12 07:41:48.839 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|< Vary: Origin
2021-01-12 07:41:48.839 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|< Vary: Access-Control-Request-Method
2021-01-12 07:41:48.839 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|< Vary: Access-Control-Request-Headers
2021-01-12 07:41:48.839 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|< Access-Control-Allow-Origin: *
2021-01-12 07:41:48.839 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|<
2021-01-12 07:41:48.839 [http-nio-8180-exec-9] INFO c.l.c.f.LoggingFilter - 10.150.32.229|< {"result":"ok"}