sometimes error 502 behind nginx-proxy

[Tufan Deveci]

Hi,

repetitive frequently on nginx-proxy logs;

~# docker logs nginx-proxy |grep upstream|tail nginx.1 | 2018/10/22 10:59:33 [error] 123#123: *60963 no live upstreams while connecting to upstream, client: 178.233.101.193, server: eposta.tufandeveci.com.tr, request: "GET /admin/dashboard HTTP/2.0", upstream: "http://eposta.tufandeveci.com.tr/admin/dashboard", host: "eposta.tufandeveci.com.tr", referrer: "https://eposta.tufandeveci.com.tr/admin/"

[Tufan Deveci]

docker exec nginx-proxy cat /etc/nginx/conf.d/default.conf ....

177:# eposta.tufandeveci.com.tr 178:upstream eposta.tufandeveci.com.tr { 179- ## Can be connected with "mybridge" network 180- # mailserver 181- server 10.0.20.20:80; 182- # Cannot connect to network of this container 183- server 127.0.0.1 down; 184-} 185-server { 186: server_name eposta.tufandeveci.com.tr; 187- listen 80 ; 188- access_log /var/log/nginx/access.log vhost; 189- return 301 https://$host$request_uri; 190-} 191-server { 192: server_name eposta.tufandeveci.com.tr; 193- listen 443 ssl http2 ; 194- access_log /var/log/nginx/access.log vhost; 195- ssl_protocols TLSv1 TLSv1.1 TLSv1.2 TLSv1.3; 196- ssl_ciphers 'ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:!DSS'; 197- ssl_prefer_server_ciphers on; -- 200- ssl_session_tickets off; 201- ssl_certificate /etc/nginx/certs/wildcard-tufandeveci.crt; 202- ssl_certificate_key /etc/nginx/certs/wildcard-tufandeveci.key; 203- add_header Strict-Transport-Security "max-age=31536000" always; 204- location / { 205: proxy_pass http://eposta.tufandeveci.com.tr; 206- } 207-}

[Scott MacDonald]

Does the proxy work at all when accessing the poste.io container?

[Tufan Deveci]

Proxy work all container, but sometime 502 error only poste.io container issue

[SH]

Do you have any special reason to have

server 127.0.0.1 down;

in upstream config?

[Tufan Deveci]

jwilder/nginx-proxy using and dockergen automated config generated..

[SH]

I use same setup without any problems. You should search through the poste logs (nginx) if there is anything wrong

[Tufan Deveci]

Ok, thanks..

[Tufan Deveci]

i'have Change to poste.io container network is default bridge.

[Tufan Deveci]

nginx-proxy container single network use and resolved.