* 겪고 있는 문제 상황을 최대한 자세하게 작성해주세요.

* 문제 해결을 위해 어떤 시도를 해보았는지 구체적으로 함께 알려주세요.

AWS 환경 상태가 Severe로 뜹니다.

작성한 코드 및 에러 메세지

Logs 확인

----------------------------------------
/var/log/nginx/error.log
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2023/08/04 05:56:55 [warn] 2060#2060: could not build optimal types_hash, you should increase either types_hash_max_size: 1024 or types_hash_bucket_size: 64; ignoring types_hash_bucket_size
2023/08/04 05:56:55 [warn] 2092#2092: could not build optimal types_hash, you should increase either types_hash_max_size: 1024 or types_hash_bucket_size: 64; ignoring types_hash_bucket_size
2023/08/04 05:56:55 [warn] 2093#2093: could not build optimal types_hash, you should increase either types_hash_max_size: 1024 or types_hash_bucket_size: 64; ignoring types_hash_bucket_size
2023/08/04 05:57:00 [error] 2097#2097: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 172.31.4.203, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8000/", host: "172.31.7.180"
2023/08/04 05:57:15 [error] 2096#2096: *3 connect() failed (111: Connection refused) while connecting to upstream, client: 172.31.4.203, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8000/", host: "172.31.7.180"
2023/08/04 05:57:30 [error] 2097#2097: *5 connect() failed (111: Connection refused) while connecting to upstream, client: 172.31.42.240, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8000/", host: "172.31.7.180"
2023/08/04 05:57:30 [error] 2097#2097: *7 connect() failed (111: Connection refused) while connecting to upstream, client: 172.31.4.203, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8000/", host: "172.31.7.180"
2023/08/04 05:57:33 [error] 2097#2097: *9 connect() failed (111: Connection refused) while connecting to upstream, client: 172.31.13.105, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8000/", host: "172.31.7.180"
2023/08/04 05:57:45 [error] 2097#2097: *11 connect() failed (111: Connection refused) while connecting to upstream, client: 172.31.42.240, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8000/", host: "172.31.7.180"
2023/08/04 05:57:45 [error] 2097#2097: *13 connect() failed (111: Connection refused) while connecting to upstream, client: 172.31.4.203, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8000/", host: "172.31.7.180"
2023/08/04 05:57:48 [error] 2097#2097: *15 connect() failed (111: Connection refused) while connecting to upstream, client: 172.31.13.105, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8000/", host: "172.31.7.180"
2023/08/04 05:58:00 [error] 2097#2097: *17 connect() failed (111: Connection refused) while connecting to upstream, client: 172.31.42.240, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8000/", host: "172.31.7.180"
2023/08/04 05:58:00 [error] 2097#2097: *19 connect() failed (111: Connection refused) while connecting to upstream, client: 172.31.4.203, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8000/", host: "172.31.7.180"
2023/08/04 05:58:03 [error] 2097#2097: *21 connect() failed (111: Connection refused) while connecting to upstream, client: 172.31.13.105, server: , request: "GET / HTTP/1.1", upstream: "http://127.0.0.1:8000/", host: "172.31.7.180"