nginx_proxy failed (21: Is a directory)

[agustinvinao]

I'm trying to override the .conf file for a subdomain (I've tried to do it with the domain too) and when I try to run my container I see this

proxy_1     | nginx.1    | 2017/09/10 20:38:16 [crit] 27#27: pread() "/etc/nginx/conf.d/demo.getdairyfarms.com.conf" failed (21: Is a directory)
proxy_1     | nginx.1    | nginx: [crit] pread() "/etc/nginx/conf.d/demo.getdairyfarms.com.conf" failed (21: Is a directory)

when my volumes are these:

    volumes:
      - "/var/run/docker.sock:/tmp/docker.sock"
      - app-public:/usr/share/nginx/html/dairyfarms/
      - "./containers/production/demo_getdairyfarms_com.conf:/etc/nginx/conf.d/demo.getdairyfarms.com.conf:ro"

Im not sending two files with the same name. Any idea?

[MaksimKlepikov]

I have same issue. I resolve it by creating volume and putting my_proxy.conf to this volume

docker volume create nginx-conf
cp -R nginx-conf /var/lib/docker/volumes/nginx-conf/_data
docker run -dit -p 80:80 --name nginx-proxy -v /conf.d/my_proxy.conf:/etc/nginx/conf.d -v /var/run/docker.sock:/tmp/docker.sock jwilder/nginx-proxy

in nginx-conf dir i have my_proxy.conf

I think in my case this is all because the folder was in the host directory, so path
/conf.d/my_proxy.conf:/etc/nginx/conf.d/my_proxy.conf:ro
was not correct or something like that

[sirdiego]

Maybe it helps someone else. I had this same message and the container restarted again and again. For me the problem was that I had a typo in my local config file path and docker created it as a directory instead:

-v /home/sirdiego/folder-with-typo/my_proxy.conf:/etc/nginx/conf.d/my_proxy.conf

With this docker created /home/sirdiego/folder-with-typo/my_proxy.conf as a DIRECTORY and so the proxy could not load the file. After I fixed the typo inside the mount everything worked fine...

[CaliforniaMountainSnake]

Make sure you use an absolute path when mounting a docker volume! I had the same issue when I tried to mount a volume with a relative path.