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migrate self-hosted confluence into Rancher container solution

KIK Team ISA

Since a couple of months I am desperately trying to migrate a self-hosted confluence system into a containerized environment. These are the systems specifications:

Confluence Version: Confluence 6.1.0

MySQL DB Version: MariaDB 10.1.38

The database runs on a dedicated server.

I am trying to migrate this system into a containerized environment. The specifications of the containerized environment are:

Confluence Version: 6.1

MySQL DB Version: MariaDB 10.1.38

I am using this container image: https://hub.docker.com/r/atlassian/confluence-server

The databases runs on a dedicated server, I can access it without any problem from the confluence container. Confluence recognizes the databases successfully.

When I try to import the exported dataset from the current system (exported from the UI via Administration -> Backup & Restore) I get the following error:

Import failed. Check your server logs for more information. com.atlassian.confluence.importexport.ImportExportException: Unable to complete import: Error while importing backup: com.atlassian.synchrony.Events

This error occurs after approximately 60 seconds.

You can find detailed log files here: https://pastebin.com/2FLaWB6Y

Based on my specifications I am running a supported setup of Confluence. I am pretty desperate to get this running as this is a customers system.

Accepted answers

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Stephen Sifers

Hello,

Thanks for reaching out about your migration issues and including great amounts of detail into the steps you’ve already taken. Form the notes you’ve provided we do see you’re running Confluence 6.1. This version of Confluence is no longer supported and we would suggest upgrading to a later support version (Currently at the time of this post we would suggest Confluence 6.5 or higher). Once you’ve upgraded your current system we would then ask you to reattempt the backup and restore for the migration.

Further information on the supported products may be found at Atlassian Support End of Life Policy along with all of the Supported Platforms.

Please let us know if you run into any issues upgrading to a later version in place and then attempting the restore to a similar version for your migration.

Regards,
Stephen Sifers

KIK Team ISA

Hello Stephen,

just to understand this correctly: You want me to upgrade the system I am trying to migrate because I do not want to operate it any longer in order to migrate the newly upgraded system onto my container environment??

Is there any way for me to migrate the current 6.1 on-prem system into let's say a 6.5. container system?

Stephen Sifers

Hello,

We would suggest an in-place upgrade as you’re having issues attempting to migrate your instance. An in-place upgrade will allow you to bring your instance of Confluence up to a later version prior to the migration. This will offer a cleaner state as once you migrate it will be a simple migration vs a migration then multiple upgrades.

Since you’re having issues with the import portion of the migration and you’re wanting to upgrade as well then this path would be the best to attempt. There may be issues with the version you’re running which is causing the import to fail.

From your notes as well there is also an issue with using Confluence and MySQL Maria DB. Further information about this compatibility may be found at CONFSERVER-29060. When you’re ready to migrate please review the supported platforms linked in the initial answer to help find a supported database application.

Regards,
Stephen Sifers

KIK Team ISA

Hello,

based on the issue that you linked you provide support for MariaDB starting August 2019...

Upgrading the system I am about to migrate (in order to update BTW) is not an option.

Could you answer my preceding question before suggesting anything else?

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