Moving A CNAME From An Old Instance To A New Instance

[#1]

Summary

This method can be used when moving a CNAME from an old instance to a new instance. Often at times, when changing to a new instance, this question can come around, and ones would wonder how to do it or a solution on how to do it. This steps will show you the two phases which I will explain below. (Note: This would need to be done before the old instance deactivated)

Issue

A CNAME needs to be moved from an old instance to a new instance

Solution

NOTE: You cannot have the same CNAME in two different instances (Pointing to two instances, e.g. cname1.company.com pointing to instance1.mktoweb.com and instance2.mktoweb.com)
 

Key terms:
CNAME 1 = Initial cname in the old instance
CNAME 2 = Additional cname created in the old instance
INSTANCE1 = Old instance (Instance Name)
INSTANCE2 = New instance (Instance Name)

 

Phase 1:
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1. Create an additional CNAME (a replacement CNAME) which you would want to swap as the default in the second step.

CNAME 1 > INSTANCE1
(Default) <Existing CNAME in the Marketo Admin > Landing Pages section>

CNAME 2 > INSTANCE1
This would be the additional CNAME created for the replacement.
 

2. Swap the default with the replacement CNAME you just created in step 1 and set this CNAME1 as a domain alias in the old instance.

CNAME 1 > INSTANCE1
A domain alias in the old instance.

CNAME 2 > INSTANCE1
(Default)

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Phase 2:
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** Transition might not be smooth during the cutover. 🙂 (The Landing page links might get some interruption during the cutover)

During the Cutover (Before the old instance deactivated) : 

1. [Your Action] - To remove the CNAME1 which is a domain alias in the old instance (INSTANCE1) 

2. [Your Action (IT Team)] - To create CNAME1 as a domain alias in the new instance (INSTANCE2).  (During this time the link to old landing pages will be broken)

3. [You need to raise a support ticket to enable SSL for CNAME1 for the new instance (INSTANCE2). 

If you have any questions, please contact Marketo Engage Support at https://support.marketo.com.
 

Environment

Production/Sandbox