Hi, I just create a droplet using dokku and deploy a RoR app, the problem is that only with the ip addres the web app doesn’t open, the browser show this message “This webpage is not available”, only if I specify the port it work (e.g. 100.201.202.203:50000). I add a domain and its the same, only work with the port (e.g www.something.com:50000). Someone know why is this happening and how can I fix it?
When you use a URL without a port included your browser assumes it is port 80 (or 443 for HTTPS). Using anything else requires it to be specified. Generally with modern apps using Rails, a JavaScript framework or something other than static HTML or PHP scripts you will use a reverse proxy web server in front of the app to process requests (this also automatically gives you nice standard access logs). What you can do is:
First install nginx
sudo apt-get update;
sudo apt-get install nginx;
Then once it’s installed, edit the nginx configuration file in /etc/nginx/sites-enabled/ so it reads like:
server {
listen 80;
server_name example.com;
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header Host $host;
proxy_pass http://127.0.0.1:50000;
}
}
Then restart nginx:
service nginx restart
Hi @ryanpq. dokku brings by default nginx, when I ssh the app and go to /etc/nginx there is no folder with the name “sites-enabled” but there’s a file nginx.conf and this is what contains:
user www-data;
worker_processes 4;
pid /run/nginx.pid;
events {
worker_connections 768;
# multi_accept on;
}
http {
##
# Basic Settings
##
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 65;
types_hash_max_size 2048;
# server_tokens off;
# server_names_hash_bucket_size 64;
# server_name_in_redirect off;
include /etc/nginx/mime.types;
default_type application/octet-stream;
##
# Logging Settings
##
access_log /var/log/nginx/access.log;
error_log /var/log/nginx/error.log;
##
# Gzip Settings
##
gzip_disable "msie6";
# gzip_vary on;
# gzip_proxied any;
# gzip_comp_level 6;
# gzip_buffers 16 8k;
# gzip_http_version 1.1;
# gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascri$
##
# nginx-naxsi config
##
# Uncomment it if you installed nginx-naxsi
##
#include /etc/nginx/naxsi_core.rules;
##
# nginx-passenger config
##
# Uncomment it if you installed nginx-passenger
##
#passenger_root /usr;
#passenger_ruby /usr/bin/ruby;
##
# Virtual Host Configs
##
include /etc/nginx/conf.d/*.conf;
include /etc/nginx/sites-enabled/*;
}
#mail {
# # See sample authentication script at:
# # http://wiki.nginx.org/ImapAuthenticateWithApachePhpScript
#
# # auth_http localhost/auth.php;
# # pop3_capabilities "TOP" "USER";
# # imap_capabilities "IMAP4rev1" "UIDPLUS";
#
# server {
# listen localhost:110;
# protocol pop3;
# proxy on;
# }
#
# server {
# listen localhost:143;
# protocol imap;
# proxy on;
# }
#}
In the directory /home/dokku/my-app/ there is another nginx.conf:
server {
listen [::]:22445;
listen 22445;
access_log /var/log/nginx/<my-app>-access.log;
error_log /var/log/nginx/<my-app>-error.log;
location / {
gzip on;
gzip_min_length 1100;
gzip_buffers 4 32k;
gzip_types text/css text/javascript text/xml text/plain text/x-component$
gzip_vary on;
gzip_comp_level 6;
proxy_pass http://<my-app>-5000;
proxy_http_version 1.1;
gzip on;
gzip_min_length 1100;
gzip_buffers 4 32k;
gzip_types text/css text/javascript text/xml text/plain text/x-component$
gzip_vary on;
gzip_comp_level 6;
proxy_pass http://<my-app>-5000;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_set_header Host $http_host;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header X-Forwarded-Port $server_port;
proxy_set_header X-Request-Start $msec;
}
include /home/dokku/<my-app>/nginx.conf.d/*.conf;
In this last file if I change the listen to 80 nothing happens, and when I restart or rebuild the app it changes back to 22445.