Cloning a Self-Hosted Database Using KB1645366

[Auverland]

Hello everyone,

KB1645366 describes how to clone a database for MariaDB and MySQL for ServiceNow self-hosted.
One of the important steps is backing up the KMF tables from the target instance. The KB provides a list of tables to back up :

1. sn_kmf_identity_group
2. sn_kmf_identity_group_alias
3. sn_kmf_identity_group_member
4. sn_kmf_resolution_framework_log
5. sys_kmf_certificate
6. sys_kmf_ephemeral_key
7. sys_kmf_external_key
8. sys_kmf_instance_key
9. sys_kmf_key_metadata
10. sys_kmf_module_key
11. sys_kmf_wrapped_module_key

However, some of these do not exist or no longer exist. They no longer appear in the sys_db_object and sys_storage_table_alias tables.
For example, on Yokohama Patch 5 (the version we’re using, which will be migrated to Australia Patch 3 after we create a clone of the DEV environment :)) and on Australia Patch 2 (a PDI I just created), the following tables do not exist:

1. sn_kmf_identity_group
2. sn_kmf_identity_group_member

Is it possible that these tables existed in previous versions of ServiceNow?

Furthermore, if we search for all tables related to kmf (whose names contain “kmf”), we find 33 for Yokohama and 36 for Australia.

How should we interpret this information? Since the KB was updated in April 2026, is it possible that the list of tables to back up is not exhaustive?

Thank you for your help.

Regards,

Francis

[CJB]

@Auverland Did you have any luck? I'm in the same boat.

[Auverland]

I'm not sure I understand. Is this message really meant for me, or is it for ChauV?

[CJB]

@Auverland  It was for you. Accidentally @'d the wrong person!

[Auverland]

Hello @CJB,

A little over a month ago, I opened two support tickets to get answers to the questions I asked in this post. I asked other questions related to cloning, but I haven’t received all the answers yet. Since the questions are very technical and support for the self-hosted community is very limited, it’s taking some time.
Since I couldn’t wait that long, I set up some lab servers and analyzed the standard cloning process based on the screenshots provided in the app. I’ve therefore developed some hypotheses to write a cloning tool.
With the answers I hope to receive, I should be able to validate them. I’ve also requested that KB1645366 be corrected (at least the tables and the script at the end).
The cloning tool is working well so far. The most difficult part was the KMF keys. Now I just need to fully automate it, just like on the cloud.

Regards.