PhpMyAdmin

Prerequisite

To install PhpMyAdmin, you will need to have Nginx, PHP, MariaDB and Let’s Encrypt installed.

Install

# apt install phpmyadmin

The installer will ask you several questions. Here are the answers:

Web server to reconfigure automatically?

Choose none. Nginx will be configured later.

Configure database for phpmyadmin with dbconfig-common?

Yes

Password of the database's administrative user?

Enter your MariaDB root user password.

MySQL application password for phpmyadmin?

Keep it empty to get a random one. You will never need to enter this password

Configure

PHP

Edit file /etc/php5/mods-available/local-common.ini and add folder /usr/share/phpmyadmin/ to the open_basedir setting.

Nginx

1. Create the config file /etc/nginx/sites-available/phpmyadmin.example.org

   server {
       include snippets/listen-http.conf;
       server_name phpmyadmin.example.org;
   
       access_log /var/log/nginx/phpmyadmin.example.org.access.log;
       error_log /var/log/nginx/phpmyadmin.example.org.error.log info;
   
       include snippets/acme-challenge.conf;
       include snippets/https-permanent-redirect.conf;
   }
   
   server {
       include snippets/listen-https.conf;
       server_name phpmyadmin.example.org;
   
       access_log /var/log/nginx/phpmyadmin.example.org.access.log;
       error_log /var/log/nginx/phpmyadmin.example.org.error.log info;
   
       include snippets/acme-challenge.conf;
       #include snippets/ssl.conf;
       #ssl_certificate      /etc/letsencrypt/live/phpmyadmin.example.org/fullchain.pem;
       #ssl_certificate_key  /etc/letsencrypt/live/phpmyadmin.example.org/privkey.pem;
       #include snippets/hsts.conf;
   
       add_header X-Content-Type-Options nosniff;
       add_header X-Frame-Options "SAMEORIGIN";
       add_header X-XSS-Protection "1; mode=block";
       add_header X-Robots-Tag none;
   
       #auth_basic            "Restricted";
       #auth_basic_user_file  .htpasswd;
   
       root /usr/share/phpmyadmin/;
   
       index index.php;
   
       location ~ \.php$ {
           try_files $uri =404;
           include fastcgi.conf;
           fastcgi_pass php5;
       }
   }
   

2. Activate the configuration with

   $ sudo nginx_modsite -e phpmyadmin.example.org
   Would you like to reload the Nginx configuration now? (Y/n) Y
   

3. Edit file /usr/local/etc/certmanage/main.json and add the following to the list

   {
       "domains": ["phpmyadmin.example.org"],
       "reload": [["/bin/systemctl", "reload", "nginx.service"]]
   }
   

4. Get your certificate

   $ sudo /usr/local/sbin/certmanage
   Renewing certificate for phpmyadmin.example.org that will expire on 0001-01-01
   
   Saving debug log to /var/log/letsencrypt/letsencrypt.log
   Starting new HTTPS connection (1): acme-v01.api.letsencrypt.org
   Obtaining a new certificate
   Performing the following challenges:
   http-01 challenge for phpmyadmin.example.org
   Using the webroot path /var/www/acme-challenge for all unmatched domains.
   Waiting for verification...
   Cleaning up challenges
   Generating key (2048 bits): /etc/letsencrypt/keys/1764_key-certbot.pem
   Creating CSR: /etc/letsencrypt/csr/1764_csr-certbot.pem
   
   IMPORTANT NOTES:
    - Congratulations! Your certificate and chain have been saved at
      /etc/letsencrypt/live/phpmyadmin.example.org/fullchain.pem. Your cert
      will expire on 2025-03-23. To obtain a new or tweaked version of
      this certificate in the future, simply run certbot again. To
      non-interactively renew *all* of your certificates, run "certbot
      renew"
    - If you like Certbot, please consider supporting our work by:
   
      Donating to ISRG / Let's Encrypt:   https://letsencrypt.org/donate
      Donating to EFF:                    https://eff.org/donate-le
   
   Restarting services:
   systemctl reload nginx.service
   

5. Uncomment the ssl related lines in /etc/nginx/sites-available/phpmyadmin.example.org and run

   $ sudo systemctl reload nginx.service