502 bad gateway가 뜹니다

Question

https://github.com/hwd3004/clone_pinterest 오라클 클라우드로 하고 있고 포트 개방은 80, 443, 8080, 8000, 9000, 3306 해주었습니다. 도커 포테이너 - 서비스에서 django_container_gunicorn이 이상한거 같습니다. 이건 django_container_gunicorn 로그입니다. , 0 static files copied to '/home/clone_pinterest/staticfiles', 134 unmodified., Operations to perform:, Apply all migrations: accountapp, admin, articleapp, auth, commentapp, contenttypes, profileapp, projectapp, sessions, subscribeapp, Running migrations:, No migrations to apply., Your models in app(s): 'accountapp' have changes that are not yet reflected in a migration, and so won't be applied., Run 'manage.py makemigrations' to make new migrations, and then re-run 'manage.py migrate' to apply them., [2021-06-10 09:42:42 +0000] [1] [INFO] Starting gunicorn 20.1.0, [2021-06-10 09:42:42 +0000] [1] [ERROR] Retrying in 1 second., [2021-06-10 09:42:43 +0000] [1] [ERROR] Retrying in 1 second., [2021-06-10 09:42:44 +0000] [1] [ERROR] Retrying in 1 second., [2021-06-10 09:42:45 +0000] [1] [ERROR] Retrying in 1 second., [2021-06-10 09:42:46 +0000] [1] [ERROR] Retrying in 1 second., [2021-06-10 09:42:47 +0000] [1] [ERROR] Can't connect to ('0.0.0.0/8000', 8000), , 0 static files copied to '/home/clone_pinterest/staticfiles', 134 unmodified., Operations to perform:, Apply all migrations: accountapp, admin, articleapp, auth, commentapp, contenttypes, profileapp, projectapp, sessions, subscribeapp, Running migrations:, No migrations to apply., Your models in app(s): 'accountapp' have changes that are not yet reflected in a migration, and so won't be applied., Run 'manage.py makemigrations' to make new migrations, and then re-run 'manage.py migrate' to apply them., [2021-06-10 09:42:58 +0000] [1] [INFO] Starting gunicorn 20.1.0, [2021-06-10 09:42:58 +0000] [1] [ERROR] Retrying in 1 second., [2021-06-10 09:42:59 +0000] [1] [ERROR] Retrying in 1 second., [2021-06-10 09:43:00 +0000] [1] [ERROR] Retrying in 1 second., [2021-06-10 09:43:01 +0000] [1] [ERROR] Retrying in 1 second., [2021-06-10 09:43:02 +0000] [1] [ERROR] Retrying in 1 second., [2021-06-10 09:43:03 +0000] [1] [ERROR] Can't connect to ('0.0.0.0/8000', 8000), , 0 static files copied to '/home/clone_pinterest/staticfiles', 134 unmodified., Operations to perform:, Apply all migrations: accountapp, admin, articleapp, auth, commentapp, contenttypes, profileapp, projectapp, sessions, subscribeapp, Running migrations:, No migrations to apply., Your models in app(s): 'accountapp' have changes that are not yet reflected in a migration, and so won't be applied., Run 'manage.py makemigrations' to make new migrations, and then re-run 'manage.py migrate' to apply them., [2021-06-10 09:43:29 +0000] [1] [INFO] Starting gunicorn 20.1.0, [2021-06-10 09:43:29 +0000] [1] [ERROR] Retrying in 1 second., [2021-06-10 09:43:30 +0000] [1] [ERROR] Retrying in 1 second., [2021-06-10 09:43:31 +0000] [1] [ERROR] Retrying in 1 second., [2021-06-10 09:43:32 +0000] [1] [ERROR] Retrying in 1 second., , 0 static files copied to '/home/clone_pinterest/staticfiles', 134 unmodified., Operations to perform:, Apply all migrations: accountapp, admin, articleapp, auth, commentapp, contenttypes, profileapp, projectapp, sessions, subscribeapp, Running migrations:, No migrations to apply., Your models in app(s): 'accountapp' have changes that are not yet reflected in a migration, and so won't be applied., Run 'manage.py makemigrations' to make new migrations, and then re-run 'manage.py migrate' to apply them., [2021-06-10 09:43:13 +0000] [1] [INFO] Starting gunicorn 20.1.0, [2021-06-10 09:43:13 +0000] [1] [ERROR] Retrying in 1 second., [2021-06-10 09:43:14 +0000] [1] [ERROR] Retrying in 1 second., [2021-06-10 09:43:15 +0000] [1] [ERROR] Retrying in 1 second., [2021-06-10 09:43:16 +0000] [1] [ERROR] Retrying in 1 second., [2021-06-10 09:43:17 +0000] [1] [ERROR] Retrying in 1 second., [2021-06-10 09:43:18 +0000] [1] [ERROR] Can't connect to ('0.0.0.0/8000', 8000), , 0 static files copied to '/home/clone_pinterest/staticfiles', 134 unmodified., Operations to perform:, Apply all migrations: accountapp, admin, articleapp, auth, commentapp, contenttypes, profileapp, projectapp, sessions, subscribeapp, Running migrations:, No migrations to apply., Your models in app(s): 'accountapp' have changes that are not yet reflected in a migration, and so won't be applied., Run 'manage.py makemigrations' to make new migrations, and then re-run 'manage.py migrate' to apply them., [2021-06-10 09:42:27 +0000] [1] [INFO] Starting gunicorn 20.1.0, [2021-06-10 09:42:27 +0000] [1] [ERROR] Retrying in 1 second., [2021-06-10 09:42:28 +0000] [1] [ERROR] Retrying in 1 second., [2021-06-10 09:42:29 +0000] [1] [ERROR] Retrying in 1 second., [2021-06-10 09:42:30 +0000] [1] [ERROR] Retrying in 1 second., [2021-06-10 09:42:31 +0000] [1] [ERROR] Retrying in 1 second., [2021-06-10 09:42:32 +0000] [1] [ERROR] Can't connect to ('0.0.0.0/8000', 8000), 이건 서비스 탭에 있는 nginx 로그입니다. /docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration, /docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/, /docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh, 10-listen-on-ipv6-by-default.sh: info: Getting the checksum of /etc/nginx/conf.d/default.conf, 10-listen-on-ipv6-by-default.sh: info: Enabled listen on IPv6 in /etc/nginx/conf.d/default.conf, /docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh, /docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh, /docker-entrypoint.sh: Configuration complete; ready for start up, 2021/06/10 09:30:42 [error] 34#34: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 10.0.0.2, server: , request: "GET / HTTP/1.1", upstream: "http://10.0.2.5:8000/", host: "140.83.62.96", 10.0.0.2 - - [10/Jun/2021:09:30:42 +0000] "GET / HTTP/1.1" 502 559 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.77 Safari/537.36", 2021/06/10 09:30:55 [error] 34#34: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 10.0.0.2, server: , request: "GET / HTTP/1.1", upstream: "http://10.0.2.5:8000/", host: "140.83.62.96", 10.0.0.2 - - [10/Jun/2021:09:30:55 +0000] "GET / HTTP/1.1" 502 559 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.77 Safari/537.36", 10.0.0.2 - - [10/Jun/2021:09:31:09 +0000] "GET / HTTP/1.1" 502 559 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.77 Safari/537.36", 2021/06/10 09:31:09 [error] 34#34: *1 connect() failed (113: No route to host) while connecting to upstream, client: 10.0.0.2, server: , request: "GET / HTTP/1.1", upstream: "http://10.0.2.5:8000/", host: "140.83.62.96", 2021/06/10 09:32:03 [error] 34#34: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 10.0.0.2, server: , request: "GET / HTTP/1.1", upstream: "http://10.0.2.5:8000/", host: "140.83.62.96", 10.0.0.2 - - [10/Jun/2021:09:32:03 +0000] "GET / HTTP/1.1" 502 559 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.77 Safari/537.36", 10.0.0.2 - - [10/Jun/2021:09:34:03 +0000] "GET / HTTP/1.1" 502 559 "-" "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.77 Safari/537.36", 2021/06/10 09:34:03 [error] 34#34: *7 connect() failed (113: No route to host) while connecting to upstream, client: 10.0.0.2, server: , request: "GET / HTTP/1.1", upstream: "http://10.0.2.5:8000/", host: "140.83.62.96", /docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration, /docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/, /docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh, 10-listen-on-ipv6-by-default.sh: info: Getting the checksum of /etc/nginx/conf.d/default.conf, 10-listen-on-ipv6-by-default.sh: info: Enabled listen on IPv6 in /etc/nginx/conf.d/default.conf, /docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh, /docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh, /docker-entrypoint.sh: Configuration complete; ready for start up, 2021/06/10 09:30:05 [emerg] 1#1: host not found in upstream "django_container_gunicorn" in /etc/nginx/nginx.conf:21, nginx: [emerg] host not found in upstream "django_container_gunicorn" in /etc/nginx/nginx.conf:21, /docker-entrypoint.sh: /docker-entrypoint.d/ is not empty, will attempt to perform configuration, /docker-entrypoint.sh: Looking for shell scripts in /docker-entrypoint.d/, /docker-entrypoint.sh: Launching /docker-entrypoint.d/10-listen-on-ipv6-by-default.sh, 10-listen-on-ipv6-by-default.sh: info: Getting the checksum of /etc/nginx/conf.d/default.conf, 10-listen-on-ipv6-by-default.sh: info: Enabled listen on IPv6 in /etc/nginx/conf.d/default.conf, /docker-entrypoint.sh: Launching /docker-entrypoint.d/20-envsubst-on-templates.sh, /docker-entrypoint.sh: Launching /docker-entrypoint.d/30-tune-worker-processes.sh, /docker-entrypoint.sh: Configuration complete; ready for start up, 2021/06/10 09:30:21 [emerg] 1#1: host not found in upstream "django_container_gunicorn" in /etc/nginx/nginx.conf:21, nginx: [emerg] host not found in upstream "django_container_gunicorn" in /etc/nginx/nginx.conf:21, 질문이 너무 이상해서 죄송합니다.

liufeier · Answer

아... 감사합니다. 잘되네요. 에러 메시지에도 떡하니 [2021-06-10 09:43:18 +0000] [1] [ERROR] Can't connect to ('0.0.0.0/8000', 8000), 이게 있었는데 인지를 못했네요. 부끄럽고 민망합니다..하하;;;

Hyong Sok Park · Answer

안녕하세요! 질문 확인했습니다. 일단 저도 처음 보는 에러네요. 확실히 gunicorn쪽에 문제가 있는 것이 맞아보입니다. gunicorn쪽에 문제가 있으니 nginx단에서도 서버를 연결하는 데에 문제가 있는 듯 하구요. 그래서 첨부해주신 깃 저장소를 확인해보니, Dockerfile 에서 조금 이상한 점을 확인했습니다. 마지막 CMD 를 통해 커맨드를 명시해주는 부분에서 CMD [ ... 중략 ... --bind 0.0.0.0 / 8000 "] 이 조금 의심이 됩니다. 저희 강좌에서는 이 부분이 CMD [ ... 중략 ... --bind 0.0.0.0 : 8000 "] 로 / 가 아닌 : 로 설정되어 있습니다. " / " 와 같은 표기는 보통 IP 허용 영역을 지정하는, CIDR 표기법에 사용되는 기호 입니다. 저희는 포트 번호를 지정하는 것이 목적 이기에, 한번 : 으로 해당 내용을 수정하신 후, 이미지를 다시 빌드하고 구동 해보시길 바랍니다. 그럼에도 문제가 생기거나, 답변이 부족한 부분이 있다면 계속 질문 남겨주시길 바랍니다. 좋은하루 보내세요! 감사합니다-