Nginx sample is not working

[mpcmarcos]

I'm testing with Mac the nginx sample and it's not working. The nginx image is stopped few seconds later to start.

Log:

2020/04/30 18:31:17 [emerg] 1#1: host not found in upstream "appA" in /etc/nginx/conf.d/default.conf:5
nginx: [emerg] host not found in upstream "appA" in /etc/nginx/conf.d/default.conf:5

[rynowak]

I can reproduce this except the nginx image doesn't crash on me.

[rynowak]

I was able to work around this by adding a resolver to nginx.conf this seems like a behavior difference between docker on windows and docker on macOS.

server {
    listen 80;

    location /A {
        resolver 127.0.0.11;
        proxy_pass http://appA/;
        proxy_http_version 1.1;
        proxy_set_header   Upgrade $http_upgrade;
        proxy_set_header   Connection keep-alive;
        proxy_set_header   Host $host;
        proxy_cache_bypass $http_upgrade;
        proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header   X-Forwarded-Proto $scheme;
    }

    location /B {
        resolver 127.0.0.11;
        proxy_pass http://appB/;
        proxy_http_version 1.1;
        proxy_set_header   Upgrade $http_upgrade;
        proxy_set_header   Connection keep-alive;
        proxy_set_header   Host $host;
        proxy_cache_bypass $http_upgrade;
        proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header   X-Forwarded-Proto $scheme;
    }
}

I can also confirm that 127.0.0.11 is in /etc/resolv.conf so I'm not sure why this isn't just working.

[rynowak]

@davidfowl