How To Enable Neverfail Engine's Cozen Name For Passive Node Management

How To Enable Neverfail Engine's Cozen Name For Passive Node Management

Summary

This article provides information on how to enable Cozen Name feature for managing a Passive server from a Neverfail cluster.

More Information

An Active server from a Neverfail cluster can communicate in the network the Public (Production) IP address.
A Passive server, can cannot communicate in the network over the Public (Production) IP so a Management IP and Cozen Management Name can be configured for this.

Neverfail recommends having Cozen Name feature configured on each node, so that no matter which server will be Passive at a certain time, it can communicate into the network. 

To configure Cozen Name feature follow the steps below:
1. Stop the Neverfail Engine service
2. Open Neverfail Configure Server Wizard UI by choosing "Stop Webservices" when prompted
3. Go to Management section.
4. Add a Management Name and a Management IP like in the screenshot below.  

cozenCWprimary.jpg

cozenCWsecondary.jpg

5. Create a new A-Record in your DNS to have the Management Name resolved against the Management IP.

6. Because DNS resolution port (53) is filtered (blocked) by design on the passive nodes, the name resolution for Cozen Management Name should be configured on the all the Neverfail servers, in the hosts file located in  C:\Windows\System32\drivers\etc.

Applies to

Neverfail Continuity Engine 8.5 and later