The worker configuration is a mostly automatic process, but there are some details, during the configuration, you must pay attention to.
Pre-configuration
Before running the cluster wizard, you have to set up your environment by following the below steps.
Worker node deploy
First of all you need to deploy the worker node of the cluster (the primary one will be the already existing one). To deploy the worker node you can follow the Appliance deploy guide.
Firewall configuration
When the worker node is deployed, you need to configure your firewall to allow the traffic from and to the Required Ports.
Note: you can easily test your firewall configuration using the on-board Check Firewall Ports tool from the appliance web interface.
Furthermore you need to allow traffic between the principal node to the worker following our docs: Ports between node and worker
DNS configurations
You need to perform the following operations on your DNS:
- create the A record to make the appliance FQDN pointing to the IP address of the just deployed secondary node
- update the SPF (TXT) record of all domains that will use the secondary node to send email, with the secondary node IP address
- create the PTR record on the name server where the zone of the network is. The PTR record must point to the appliance FQDN
Configuration
You are ready to perform the cluster configuration. To begin this process you have to reach:
- Cluster status page on primary node.
- Setup as worker page on worker node.
First of all you have to take note of both appliance IP address and Public Keys. If multiple addresses are displayed, you have to choose the one which is visible by the other node.
Note: if any NAT is in place, you should set the IP address visible from the other appliance network. Click on the next green button and wait for firewall checks.
- Primary node: click Replicate this node button on the node you want the configuration will be replicated on the other.
- Worker node: click Overwrite this node button on the other node.