1. Install Radicale using pip

   python3 -m pip install --upgrade radicale

2. Create configuration files for Radicale

   mkdir ~/.config/radicale
   touch ~/.config/radicale/config
   touch ~/.config/radicale/users

3. Install Apache htpasswd, then create a user and a password

   sudo apt-get install apache2-utils #For Debian-based
   htpasswd -c ~/.config/radicale/users user1

4. Update the config file with the following content

   [server]
   # Bind all addresses
   hosts = 0.0.0.0:5232, [::]:5232
   
   [auth]
   type = htpasswd
   htpasswd_filename = ~/.config/radicale/users
   htpasswd_encryption = md5
   
   [storage]
   filesystem_folder = ~/.var/lib/radicale/collections

5. Create Radicale service with systemd

   touch ~/.config/systemd/user/radicale.service

6. Update the file radicale.service with the following content

   [Unit]
   Description=Radicale server
   
   [Service]
   ExecStart=/usr/bin/env python3 -m radicale
   Restart=on-failure
   
   [Install]
   WantedBy=default.target

7. Start the Radicale server

   systemctl --user enable radicale
   systemctl --user start radicale
   systemctl --user status radicale

8. Optional: Import existing calendar and contacts (for user1)

   curl -u 'user1:password' -X PUT http://localhost:5232/user1/calendar --data-binary @calendar.ics
   curl -u 'user1:password' -X PUT http://localhost:5232/user1/addressbook --data-binary @contact.vcf

Note:

• When importing existing contacts (vcf file), make sure that every record contains FN:. If not, radicale returns "Bad request" error message.

Next steps:

• Setup Apache configuration or nginx configuration for the Radicale service.
• Add calendar and contacts to clients using Radicale CalDav and CardDav.

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