I am planning an upgrade of an old, out of support Confluence 6.2.3 on CentOS 7 which is using MySQL community edition as the database to new servers running CentOS 8. As the upgrade requires at least MySQL 5.7 (not community edition) I will be migrating the database to PostgreSQL, hopefully 10.x or at least 9.6.
So what is the best strategy? My initial thoughts were to migrate to PostgreSQL on a new server, then migrate the existing Confluence 6.2.3 to a new server, then upgrading Confluence to 7.9.
Is it feasible to try to install 6.2.3 on a new server? If so, is that still available (it is way out of support). Or should I upgrade on the old server and then migrate to a new server?
Are there any particular gotchas I should be aware of?
Thanks in advance
Pls go through this high level steps to upgrade and migrate to another DB.
<CONFLUENCE-HOME-DIRECTORY>\attachments) in your Confluence Home directory. You will need it later to copy your Confluence attachments data into your new Confluence installation.
As heads up:
Pls find the links which maybe useful:
Thanks Vishwas. This was (except for the multiple upgrades) my original draft high level plan, but the missing bit was where to get the old (6.2.3) version from and the other documentation for the now out of support version.
I have also now checked that I can easily install PostgreSQL 9.5 on CentOS 8 (it is available in the standard repositories thankfully).
As these are VMs I can also take snapshots at various points in the exercise.
If anyone has further hints it would also be appreciated as this will not be a straightforward click and go exercise.
Just as an added complexity, we have 2.6GBytes of attachments which suggests I have to use the second method of migrating Confluence to a new server.
I assume I need to copy these attachments across to the new server before doing any upgrades, or can attachments be added in at any point?
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