Cannot Access Glassfish4 Admin console via nginx location and proxy pass - nginx

Question

Folks,
We have a java application running under Glassfish4. I wanted to disable direct access to the Glassfish admin server by closing 4848 at the firewall level and accessing it via a location directive in nginx (also offloading the SSL to nginx).
with asadmin enable-secure-admin turned on I can get into the admin server via https://foo.domain.com:4848 and administer it normally.
However when I disable secure admin via asadmin disable-secure-admin and access with the following location block
# Reverse proxy to access Glassfish Admin server
location /Glassfish {
proxy_set_header Host $host;
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 $scheme;
proxy_max_temp_file_size 0;
client_max_body_size 10m;
client_body_buffer_size 128k;
proxy_send_timeout 90;
proxy_read_timeout 90;
proxy_buffering off;
proxy_buffer_size 4k;
proxy_buffers 4 32k;
proxy_busy_buffers_size 64k;
proxy_temp_file_write_size 64k;
proxy_pass http://127.0.0.1:4848;
}
ala https://foo.domain.com/Glassfish I get a blank screen, and the only reference I can find in the nginx error logs is
2015/10/05 09:13:57 [error] 29429#0: *157 open() "/usr/share/nginx/html/resource/community-theme/images/login-product_name_open.png" failed (2: No such file or directory), client: 104.17.0.4, server: foo.domain.com, request: "GET /resource/community-theme/images/login-product_name_open.png HTTP/1.1", host: "foo.domain.com", referrer: "https://foo.domain.com/Glassfish"
Reading docs and on the net I do see that:
Secure Admin must be enabled to access the DAS remotely
Is what I'm trying to do simply impossible?
Edit: As requested below is the full nginx configuration.
http {
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';
access_log /var/log/nginx/access.log main;
#sendfile off;
tcp_nopush on;
tcp_nodelay off;
#keepalive_timeout 65;
types_hash_max_size 2048;
# Default HTTP server on 80 port
server {
listen 192.168.1.10:80 default_server;
#listen [::]:80 default_server;
server_name foo-dev.domain.com;
return 301 https://$host$request_uri;
}
# Default HTTPS server on 443 port
server {
listen 443;
server_name foo-dev.domain.com;
ssl_certificate /etc/ssl/certs/foo-dev.domain.com.crt;
ssl_certificate_key /etc/ssl/certs/foo-dev.domain.com.key;
ssl on;
ssl_session_cache builtin:1000 shared:SSL:10m;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_ciphers HIGH:!aNULL:!eNULL:!EXPORT:!CAMELLIA:!DES:!MD5:!PSK:!RC4;
ssl_prefer_server_ciphers on;
access_log /var/log/nginx/foo-dev.domain.com.access.ssl.log;
# Reverse proxy access to foo hospitality service implementation at BC back-end
location /AppEndPoint {
proxy_set_header Host $host;
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 $scheme;
proxy_max_temp_file_size 0;
client_max_body_size 10m;
client_body_buffer_size 128k;
proxy_send_timeout 90;
proxy_read_timeout 90;
proxy_buffering off;
proxy_buffer_size 4k;
proxy_buffers 4 32k;
proxy_busy_buffers_size 64k;
proxy_temp_file_write_size 64k;
proxy_pass http://foo-dev.domain.com:8080;
}
# Reverse proxy to access Glassfish Admin server
location /Glassfish {
proxy_set_header Host $host;
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 $scheme;
proxy_max_temp_file_size 0;
client_max_body_size 10m;
client_body_buffer_size 128k;
proxy_send_timeout 90;
proxy_read_timeout 90;
proxy_buffering off;
proxy_buffer_size 4k;
proxy_buffers 4 32k;
proxy_busy_buffers_size 64k;
proxy_temp_file_write_size 64k;
proxy_pass http://127.0.0.1:4848;
}
# Reverse proxy access to all processed servers by both client and server component
location /messages {
alias /integration/archive/app-messages/;
autoindex on;
#auth_basic "Integration Team Login";
#auth_basic_user_file /integration/archive/app-messages/requests/.htpasswd;
}
}
}
The /AppEndPoint location block is the Glassfish application server which works properly, it's only the /Glassfish location block that's giving me trouble.

Answer 1

Ok thx, for your edit.
try with:
listen: 443 ssl;
btw a good config help is offered by Mozilla: SSL Generator
and if you forward request to location /Glassfish you will have to trim the request url to remove /Glassfish. Credits to Rewrite.
Btw does the rest of your config work on SSL?

Answer 2

Only change in proxy_pass the http for https
location / {
proxy_pass https://localhost:4848;
#proxy_http_version 1.1;
#proxy_set_header Upgrade $http_upgrade;
#proxy_set_header Connection 'upgrade';
#proxy_set_header Host $host;
#proxy_cache_bypass $http_upgrade;
}

Answer 3

As you ask, I suppose you are having problems accessing to the Glassfish Admin Console using nginx. However I share an example of entire nginx.conf file for Glassfish server.
Note that the 'proxy_pass' directive for location '/admin' should be https because is mandatory for glassfish access to Admin Console using https.
One reason that can cause you can't see the Admin Console is because when you access to the page, the resources aren't properly loaded. You can verify the different loaded resources using developer options of your preferred browser to see the generated URLs; what can show you a part of the solution.
With this configuration you should be able to access both parts of glassfish, main and admin console pages.
If you don't have DNS server, you can access using server IP.
The SSL certificates used where made as Self-signed only for test purposes, consider using a valid SSL certificate like Let's Encrypt or generated by a valid CA.
Ex:
http://192.168.1.15/glassfish
http://192.168.1.15/admin
The https redirection should work and finally you will be redirected at:
https://192.168.1.15/glassfish
https://192.168.1.15/admin
glassfish-ngix.conf
upstream glassfish {
server 127.0.0.1:8080;
}
upstream glassfishadmin {
server 127.0.0.1:4848;
}
server {
listen 80;
return 301 https://$host$request_uri;
}
server {
listen 443 ssl http2;
set $glassfish_server glassfish;
set $glassfish_admin glassfishadmin;
server_name mydomain.com;
# sample site certificates
ssl_certificate /etc/nginx/server.crt;
ssl_certificate_key /etc/nginx/server.key;
ssl_trusted_certificate /etc/nginx/server.crt;
location /glassfish {
charset utf-8;
# limits
client_max_body_size 100m;
proxy_read_timeout 600s;
# buffers
proxy_buffers 16 64k;
proxy_buffer_size 128k;
# gzip
gzip on;
gzip_min_length 1100;
gzip_buffers 4 32k;
gzip_types text/css text/less text/plain text/xml application/xml application/json application/javascript;
gzip_vary on;
proxy_redirect off;
proxy_set_header X-Forwarded-Host $host;
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 $scheme;
proxy_pass http://$glassfish_server/;
}
location ~* .(png|ico|gif|jpg|jpeg|css|js)$ {
proxy_pass https://$glassfish_admin/$request_uri;
}
location /admin {
proxy_connect_timeout 300;
proxy_send_timeout 300;
proxy_read_timeout 300;
send_timeout 300;
proxy_pass_request_headers on;
proxy_no_cache $cookie_nocache $arg_nocache$arg_comment;
proxy_no_cache $http_pragma $http_authorization;
proxy_cache_bypass $cookie_nocache $arg_nocache $arg_comment;
proxy_cache_bypass $http_pragma $http_authorization;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header Host $host:$server_port; #Very nb to add :$server_port here
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
add_header Access-Control-Allow-Origin *;
proxy_set_header Access-Control-Allow-Origin *;
proxy_pass https://$glassfish_admin/;
}
}