How to Install Citadel on Alpine Linux Latest

Citadel offers a robust and user-friendly email and collaboration suite suitable for various platforms, including Alpine Linux. This guide will walk you through the process of installing and configuring Citadel on the latest version of Alpine Linux.

Prerequisites

Ensure you have the following before starting:

• A server running Alpine Linux Latest
• Root access or a user account with sudo privileges

Step 1 - Install Dependencies

To get started, install the necessary dependencies by executing the following command in the terminal:

sudo apk add gcc make libc-dev automake autoconf libtool db-dev gnutls-dev postgresql-dev openssl-dev libsieve-dev icu-dev

Step 2 - Download and Install Citadel

Download the latest stable release of Citadel from their website. For this tutorial, we'll use version 9.01:

wget https://github.com/citadel/citadel/releases/download/9.01/citadel-9.01.tar.gz
tar zxvf citadel-9.01.tar.gz
cd citadel-9.01
./configure --enable-unicode --with-cyrus-sasl --with-plugindir=/usr/lib/citadel-server/plugins
make
sudo make install

Step 3 - Configure PostgreSQL

Citadel uses PostgreSQL for its database backend. Install it if not already done, and start the service:

sudo apk add postgresql
sudo rc-service postgresql start
sudo su - postgres
psql

Create a new user and database for Citadel:

CREATE USER citadel WITH PASSWORD 'password';
CREATE DATABASE citadel WITH OWNER=citadel;

Exit PostgreSQL and return to your user account:

\q
exit

Step 4 - Configure Citadel

Set up Citadel by creating a new configuration file:

sudo cp /usr/local/citadel/citadel.conf.example /usr/local/citadel/citadel.conf
sudo nano /usr/local/citadel/citadel.conf

Adjust the following settings in the configuration file:

LogFileName = /var/log/citadel.log
SysconfDirectory = /usr/local/citadel
DataDirectory = /usr/local/citadel/data
PkgDataDirectory = /usr/local/citadel/data
DatabaseUserName = citadel
DatabaseName = citadel
ImapPort = 993
WebCitPort = 80
FullHostname = your.domain.com

Step 5 - Start and Test Citadel

Start Citadel and verify its operation:

sudo mkdir /var/log/citadel
sudo chown -R citadel:citadel /var/log/citadel
sudo rc-service citadel start

In your web browser, navigate to your server's IP or hostname followed by port 2000, like http://your.domain.com:2000/. The Citadel login page should appear. Log in using the default credentials: username admin and password password.

Conclusion

This guide has covered the installation and configuration of Citadel on Alpine Linux Latest. Citadel now provides a secure and efficient environment for team collaboration and communication.