| In the Handle Technical Manual (http://www.handle.net/tech_manual/HN_Tech_Manual_9.pdf), the short Chapter 2 has everything you need to upgrade. It could be very simple, as simple as
(1) Stop the handle server process. (2) Run the new server software on the same server directory.
but the manual has some (minor) recommendations for configuration changes. If you are using SQL storage, you won't want to "ensure the use of BDBJE storage" in any case.
Your existing prefixes and URLs will all work as before. This is not a zero-downtime approach, but is probable a few-minutes downtime at most.
If you want no downtime, you'll want to set up a mirror server first -- Chapter 7 in the Handle Technical Manual. This is also the most straightforward answer to your question about "handle server cluster". You could set up a mirror using the v9 software while your primary still runs v6. Reach out to hdladmin@cnri.reston.va.us if you run into any trouble, and when you are ready to advertise your mirror for public resolution, and also if you need to coordinate a zero-downtime upgrade.
For completeness I'll mention one other approach both to upgrading and clustering, since you are using external SQL storage: you could set up a new handle server, or multiple handle servers, talking to the same SQL backend. This is not replication -- there's just one storage, but the storage is shared by multiple handle server processes. If your SQL backend has sufficient replication itself, this could be simpler than setting up replication at the handle server level. Again, reach out to hdladmin@cnri.reston.va.us if you need assistance.
Robert
Hi all, We’re using a very old version of handle server (6.x – Is it a command to know the version ?).
I investigated to migrate to a newer version (perhaps v9) and I have some question : - Is it possible / simple ? (I read the README file, but it’s not very clear for version 6.x)
- Can you still use our old prefix/sub-prefix (2078, 2078.x, ….)
- Will our current handle url’s remain valid ?
- How can we setup this new server with no (or minimum) downtime for our users ?
Maybe the best solution it is to create a fresh and clean install of version 9.x and migrate the DB content (MySQL now) to the new one ?
Additional question : I didn’t find any documentation to create a “handle server cluster” kind structure ? Is it exists ? Sorry for my newbie questions. I’m not an expert yet ☺ Best regards Renaud
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