Learn & Share

  First  you make sure you have a  virtual host file  for your domain. I n my case I have  /etc/apache2/sites-available/ www .conf   Step 1 — Installing Certbot $ sudo apt install certbot pyt hon3-certbot-apache Step 2 — Allowing HTTPS Through the Firewall $ sudo ufw allow 'Apache Full' $ sudo ufw delete allow 'Apache' Step 3 — Obtaining an SSL Certificate $ sudo certbot --apache Saving debug log to /var/log/letsencrypt/letsencrypt.log Plugins selected: Authenticator apache, Installer apache Enter email address (used for urgent renewal and security notices) (Enter 'c' to cancel): your_email@domain - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Please read the Terms of Service at https://letsencrypt.org/documents/LE-SA-v1.2-November-15-2017.pdf. You must agree in order to register with the ACME server at https://acme-v02.api.letsencrypt.org/directory - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -...

 Unlike older koha version, Koha 20.05 and Koha 20.11, does not have global preferences like opacheader,  OpacMainUserBlock and few other preferences.  So to add header image, first, place the image  in  /usr/share/koha/opac/htdocs --Next, go to Tools -- News -- New Entry . --Select opacheader from the Display location Dropdown -- In the editor, click on the image upload icon and specify the URL and size as show in the image below.