docker-gen_nginx_template

nginx.tmpl

{{ define "upstream" }}
        {{ if .Address }}
                {{/* If we got the containers from swarm and this container's port is published to host, use host IP:PORT */}}
                {{ if and .Container.Node.ID .Address.HostPort }}
                        # {{ .Container.Node.Name }}/{{ .Container.Name }}
                        server {{ .Container.Node.Address.IP }}:{{ .Address.HostPort }};
                {{/* If there is no swarm node or the port is not published on host, use container's IP:PORT */}}
                {{ else if .Address.IP }}
                        # {{ .Container.Name }}
                        server {{ .Address.IP }}:{{ .Address.Port }};
                {{ else }}
                        # {{ .Container.Name }}
                        server {{ .Container.Name }}:{{ .Address.Port }};
                {{ end }}
        {{ else }}
                # {{ .Container.Name }}
                server {{ .Container.IP }} down;
        {{ end }}
{{ end }}

# If we receive X-Forwarded-Proto, pass it through; otherwise, pass along the
# scheme used to connect to this server
map $http_x_forwarded_proto $proxy_x_forwarded_proto {
  default $http_x_forwarded_proto;
  ''      $scheme;
}

# If we receive Upgrade, set Connection to "upgrade"; otherwise, delete any
# Connection header that may have been passed to this server
map $http_upgrade $proxy_connection {
  default upgrade;
  '' close;
}

gzip_types text/plain text/css application/javascript application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;

log_format vhost '$host $remote_addr - $remote_user [$time_local] '
                 '"$request" $status $body_bytes_sent '
                 '"$http_referer" "$http_user_agent"';

access_log off;

{{ if (exists "/etc/nginx/proxy.conf") }}
include /etc/nginx/proxy.conf;
{{ else }}
# HTTP 1.1 support
proxy_http_version 1.1;
proxy_buffering off;
proxy_set_header Host $http_host;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection $proxy_connection;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $proxy_x_forwarded_proto;
{{ end }}

server {
        server_name _; # This is just an invalid value which will never trigger on a real hostname.
        listen 80;
        access_log /var/log/nginx/access.log vhost;
        return 503;
}

{{ if (and (exists "/etc/nginx/certs/default.crt") (exists "/etc/nginx/certs/default.key")) }}
server {
        server_name _; # This is just an invalid value which will never trigger on a real hostname.
        listen 443 ssl http2;
        access_log /var/log/nginx/access.log vhost;
        return 503;

        ssl_certificate /etc/nginx/certs/default.crt;
        ssl_certificate_key /etc/nginx/certs/default.key;
}
{{ end }}

{{ range $host, $containers := groupByMulti $ "Env.VIRTUAL_HOST" "," }}

upstream {{ $host }} {
{{ range $container := $containers }}
        {{ $addrLen := len $container.Addresses }}
        {{/* If only 1 port exposed, use that */}}
        {{ if eq $addrLen 1 }}
                {{ $address := index $container.Addresses 0 }}
                {{ template "upstream" (dict "Container" $container "Address" $address) }}
        {{/* If more than one port exposed, use the one matching VIRTUAL_PORT env var, falling back to standard web port 80 */}}
        {{ else }}
                {{ $port := coalesce $container.Env.VIRTUAL_PORT "80" }}
                {{ $address := where $container.Addresses "Port" $port | first }}
                {{ template "upstream" (dict "Container" $container "Address" $address) }}
        {{ end }}
{{ end }}
}

{{ $default_host := or ($.Env.DEFAULT_HOST) "" }}
{{ $default_server := index (dict $host "" $default_host "default_server") $host }}

{{/* Get the VIRTUAL_PROTO defined by containers w/ the same vhost, falling back to "http" */}}
{{ $proto := or (first (groupByKeys $containers "Env.VIRTUAL_PROTO")) "http" }}

{{/* Get the first cert name defined by containers w/ the same vhost */}}
{{ $certName := (first (groupByKeys $containers "Env.CERT_NAME")) }}

{{/* Get the best matching cert  by name for the vhost. */}}
{{ $vhostCert := (closest (dir "/etc/nginx/certs") (printf "%s.crt" $host))}}

{{/* vhostCert is actually a filename so remove any suffixes since they are added later */}}
{{ $vhostCert := replace $vhostCert ".crt" "" -1 }}
{{ $vhostCert := replace $vhostCert ".key" "" -1 }}

{{/* Use the cert specifid on the container or fallback to the best vhost match */}}
{{ $cert := (coalesce $certName $vhostCert) }}

{{ if (and (ne $cert "") (exists (printf "/etc/nginx/certs/%s.crt" $cert)) (exists (printf "/etc/nginx/certs/%s.key" $cert))) }}

server {
        server_name {{ $host }};
        listen 80 {{ $default_server }};
        access_log /var/log/nginx/access.log vhost;
        return 301 https://$host$request_uri;
}

server {
        server_name {{ $host }};
        listen 443 ssl http2 {{ $default_server }};
        access_log /var/log/nginx/access.log vhost;

        ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
        ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA;

        ssl_prefer_server_ciphers on;
        ssl_session_timeout 5m;
        ssl_session_cache shared:SSL:50m;

        ssl_certificate /etc/nginx/certs/{{ (printf "%s.crt" $cert) }};
        ssl_certificate_key /etc/nginx/certs/{{ (printf "%s.key" $cert) }};

        {{ if (exists (printf "/etc/nginx/certs/%s.dhparam.pem" $cert)) }}
        ssl_dhparam {{ printf "/etc/nginx/certs/%s.dhparam.pem" $cert }};
        {{ end }}

        add_header Strict-Transport-Security "max-age=31536000";

        {{ if (exists (printf "/etc/nginx/vhost.d/%s" $host)) }}
        include {{ printf "/etc/nginx/vhost.d/%s" $host }};
        {{ else if (exists "/etc/nginx/vhost.d/default") }}
        include /etc/nginx/vhost.d/default;
        {{ end }}

        location / {
                proxy_pass {{ trim $proto }}://{{ trim $host }};
                {{ if (exists (printf "/etc/nginx/htpasswd/%s" $host)) }}
                auth_basic      "Restricted {{ $host }}";
                auth_basic_user_file    {{ (printf "/etc/nginx/htpasswd/%s" $host) }};
                {{ end }}
                {{ if (exists (printf "/etc/nginx/vhost.d/%s_location" $host)) }}
                include {{ printf "/etc/nginx/vhost.d/%s_location" $host}};
                {{ else if (exists "/etc/nginx/vhost.d/default_location") }}
                include /etc/nginx/vhost.d/default_location;
                {{ end }}
        }
}
{{ else }}

server {
        server_name {{ $host }};
        listen 80 {{ $default_server }};
        access_log /var/log/nginx/access.log vhost;

        {{ if (exists (printf "/etc/nginx/vhost.d/%s" $host)) }}
        include {{ printf "/etc/nginx/vhost.d/%s" $host }};
        {{ else if (exists "/etc/nginx/vhost.d/default") }}
        include /etc/nginx/vhost.d/default;
        {{ end }}

        location / {
                proxy_pass {{ trim $proto }}://{{ trim $host }};
                {{ if (exists (printf "/etc/nginx/htpasswd/%s" $host)) }}
                auth_basic      "Restricted {{ $host }}";
                auth_basic_user_file    {{ (printf "/etc/nginx/htpasswd/%s" $host) }};
                {{ end }}
                {{ if (exists (printf "/etc/nginx/vhost.d/%s_location" $host)) }}
                include {{ printf "/etc/nginx/vhost.d/%s_location" $host}};
                {{ else if (exists "/etc/nginx/vhost.d/default_location") }}
                include /etc/nginx/vhost.d/default_location;
                {{ end }}
        }
}

{{ if (and (exists "/etc/nginx/certs/default.crt") (exists "/etc/nginx/certs/default.key")) }}
server {
        server_name {{ $host }};
        listen 443 ssl http2 {{ $default_server }};
        access_log /var/log/nginx/access.log vhost;
        return 503;

        ssl_certificate /etc/nginx/certs/default.crt;
        ssl_certificate_key /etc/nginx/certs/default.key;
}
{{ end }}

{{ end }}
{{ end }}

Hi !

Impossible to have my certificates generated with the config from this repo :
https://github.com/fatk/docker-letsencrypt-nginx-proxy-companion-examples

I don't relly know where the problem comes from. But the error is :

letsencrypt-nginx-proxy-companion    | 2016-09-22 08:06:49,025:ERROR:acme.challenges:256: Unable to reach http://lets.preprod.XXXX.fr/.well-known/acme-challenge/8y-ZfCstBStEq9hwPug5w3AOm-MpPh45aow0xYh5_Bk: HTTPConnectionPool(host='lets.preprod.XXXX.fr', port=80): Max retries exceeded with url: /.well-known/acme-challenge/8y-ZfCstBStEq9hwPug5w3AOm-MpPh45aow0xYh5_Bk (Caused by NewConnectionError('<requests.packages.urllib3.connection.HTTPConnection object at 0x7fa0a01b8e90>: Failed to establish a new connection: [Errno 111] Connection refused',))

Maybe the problem come from the nginx template I don't really know.

Do you have a fully working configuration ?

Thank you very much.