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UCMDB 10.10 high availability architecture

Hi Experts,

 

I got a question on UCMDB high availability architecture.

Is it possible to stretch UCMDB cluster beyond a single site meaning one UCMDB server in cluster will reside in Site A while another UCMDB server from the same cluster will reside in Site B which is in different geographical location. Both sites are connected via a fast link.

 

Thanks.

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Re: UCMDB 10.10 high availability architecture

I don't think this is a good idea. 

UCMDB is saving the heartbeat on the DB side, but memory sync done over the eithernet.

So, it's all about how fast is a link.

 

I'd like to mention, that possible not always meaning supportable. 🙂

DB Guide is recomennding to keep UCMDB on the same subnet with DB. So, different geo location for UCMDB and DB not such a good idea as well.

Regards
-Dmitry Gomel, PMP
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Re: UCMDB 10.10 high availability architecture

Dima, Thanks for your response.

So if I need to support two different sites for the purpose of HA, UCMDB on one site will run hot and on another one - cold? And within a site I can cluster multiple UCMDB instances. Databases between sites will be synced using one of the available mirroring technologies. Would this solution be supportable?

DB Guide is mentioning same subnet in the context of Oracle SCAN. I'm using MSSQL so I just skipped Oracle section 🙂
DB Guide does not give any recommendations for MSSQL. I guess it just implies the same.

Regards
Loga
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Re: UCMDB 10.10 high availability architecture

Hey Loga,

UCMDB is very intensive in DB interaction. HA has memory sync between nodes.

I do understand the idea of geo-redundancy, but not sure this is a possible option.

BTW, how fast your conneciton between datacenters is?

 

Regards
-Dmitry Gomel, PMP
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Re: UCMDB 10.10 high availability architecture

Hi Dima,
I'm planning to run UCMDB clusters on per site basis. On one site the cluster (with 2 node) will be active, on another site cluster will be in standby mode - basically not running. There is no intersite memory syncing. When required the standby cluster will started.
Do you see any issues with this approach?
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Re: UCMDB 10.10 high availability architecture

Please confirm that my understanding is correct.

There are two sites. Every one of them will have separate UCMDB installation with 2 nodes HA setup. You're planing to sync data between two with UCMDB to UCMDB integration adapter. 

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-Dmitry Gomel, PMP
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Re: UCMDB 10.10 high availability architecture

Data sync between sites is done using one of data mirroring technologies available from DB vendors. The adaptor cannot be used as the standby instance is not running.
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Re: UCMDB 10.10 high availability architecture

I'm sorry I'm not getting the point.

Would you mind elaborating a bit?

Regards
-Dmitry Gomel, PMP
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