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Hostname Management

View Current Hostname​

# View hostname
hostnamectl

# Or traditional method
hostname
cat /etc/hostname

Change Hostname (Persistent)​

# Method 1: hostnamectl (Recommended for systemd)
sudo hostnamectl set-hostname your-domain.com

# Method 2: Direct file edit (Traditional)
echo "your-domain.com" | sudo tee /etc/hostname

# Then reload systemd hostname service
sudo systemctl restart systemd-hostnamed

Verify Hostname Change​

# Check hostname immediately
hostnamectl

# Check in prompt (may need to restart shell)
bash

# Verify prompt shows new hostname
# Example: root@your-domain.com:~#

Full Hostname Configuration (DNS Aligned)​

If your server DNS is configured for matrix.example.com:

# Set the transient hostname (runtime)
sudo hostnamectl set-hostname matrix.example.com

# Verify
hostnamectl

Your prompt should now show:

user@matrix.example.com:~$