Setup phpMyAdmin inside website subdirectory - nginx

Question

I have an NGINX web server with two domains and it also runs phpMyAdmin.
phpMyAdmin is working fine and I access it through the below non-https url:
public-ip-address/phpMyAdmin
This is how the symbolic link was setup:
sudo ln -s /usr/share/phpmyadmin/ /var/www/html
Is there a way I can point phpMyAdmin to a website's subdirectory?
For example, I would like to access the phpMyAdmin login page by accessing the following URL:
domain1.com/phpMyAdmin/
How can I achieve this? domain1.com has https enabled. So it would also secure my phpMyAdmin login.
The server block is the same as the default block for NGINX. I have created a new config file by copying it to domain.com in the /etc/NGINX/sites-available folder.
The only changes are in the server and root path tags. Rest everything is default.
server domain1.com www.domain1.com;
root /var/www/domain1.com/html/
I am using certbot for Let's Encrypt SSL certificates. My server block config is shared below:
# Server Block Config for domain1.com
server {
root /var/www/domain1.com/html;
# Add index.php to the list if you are using PHP
index index.php index.html index.htm index.nginx-debian.html;
server_name domain1.com www.domain1.com;
location / {
# First attempt to serve request as file, then
# as directory, then fall back to displaying a 404.
# try_files $uri $uri/ =404;
try_files $uri $uri/ /index.php?q=$uri&$args;
}
# pass PHP scripts to FastCGI server
#
location ~ \.php$ {
include snippets/fastcgi-php.conf;
#
# # With php-fpm (or other unix sockets):
fastcgi_pass unix:/var/run/php/php7.2-fpm.sock;
# # With php-cgi (or other tcp sockets):
# fastcgi_pass 127.0.0.1:9000;
}
# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
#
#location ~ /\.ht {
# deny all;
#}
listen [::]:443 ssl ipv6only=on; # managed by Certbot
listen 443 ssl; # managed by Certbot
ssl_certificate /etc/letsencrypt/live/domain1.com/fullchain.pem; # managed by Certbot
ssl_certificate_key /etc/letsencrypt/live/domain1.com/privkey.pem; # managed by Certbot
include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot
}
server {
if ($host = www.domain1.com) {
return 301 https://$host$request_uri;
} # managed by Certbot
if ($host = domain1.com) {
return 301 https://$host$request_uri;
} # managed by Certbot
listen 80;
listen [::]:80;
server_name domain1.com www.domain1.com;
return 404; # managed by Certbot
}
Contents of /etc/nginx/snippets/fastcgi-php.conf:
# regex to split $uri to $fastcgi_script_name and $fastcgi_path
fastcgi_split_path_info ^(.+\.php)(/.+)$;
# Check that the PHP script exists before passing it
try_files $fastcgi_script_name =404;
# Bypass the fact that try_files resets $fastcgi_path_info
# see: http://trac.nginx.org/nginx/ticket/321
set $path_info $fastcgi_path_info;
fastcgi_param PATH_INFO $path_info;
fastcgi_index index.php;
include fastcgi.conf;

Answer 1

Here is the location block that should work for you (at least the similar config works for me):
location ~* ^/phpmyadmin(?<pmauri>/.*)? {
alias /usr/share/phpmyadmin/;
index index.php;
try_files $pmauri $pmauri/ =404;
location ~ \.php$ {
include fastcgi.conf;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$pmauri;
fastcgi_pass unix:/var/run/php/php7.2-fpm.sock;
}
}
Place it before the default PHP handler location block, or the default PHP handler block will take precedence and this configuration won't work!

Answer 2

You can simply add another symlink to the domain1.com root, while keeping everything else same, like you did for the default domain.
sudo ln -s /usr/share/phpmyadmin/ /var/www/domain1.com/html
Am I missing something?
I came to this thread while looking for a solution to another problem (Nginx alias breaks due to try_files $uri alias bug) but since you are already using symlink to phpmyadmin for the site you access through IP, you can do the same for any domain.