Master Server Setup

The master server is your primary WordPress server—the one currently serving your live website.

What the Installer Does

When you run the master installer script, it:

1. Installs Tergum Agent - Monitors server health and executes commands
2. Configures MySQL for Replication - Enables binary logging
3. Sets up SSH Keys - For secure communication with slave
4. Registers with Tergum - Connects to your dashboard

Running the Installer

The Initial Setup Wizard provides the exact command. It looks like:

curl -sSL https://app.tergum.ca/api/install/master | sudo bash -s -- \
  --token YOUR_API_TOKEN \
  --server-id YOUR_SERVER_ID

Post-Installation Verification

After installation, verify:

# Check agent is running
systemctl status tergum-agent

# Check MySQL binary logging
mysql -e "SHOW MASTER STATUS;"

# Test Tailscale connectivity
tailscale ping your-slave-hostname

MySQL Configuration Changes

The installer modifies /etc/mysql/mysql.conf.d/mysqld.cnf (or equivalent):

[mysqld]
server-id = 1
log_bin = /var/log/mysql/mysql-bin.log
binlog_format = ROW
binlog_do_db = your_wordpress_db

A MySQL restart is required and performed automatically.

Next Steps

Once the master is configured:

1. Set up the slave server →
2. Install agents on both servers →