Re: [VuFind-Tech] availability, deployment

[Tod O. <to...@uc...>]

Thanks for all of the responses, very interesting and much to consider.

I look forward to hearing from others who would like to chime in!

-Tod

On May 14, 2014, at 8:04 AM, Demian Katz <dem...@vi...> wrote:

> We're running single-server over here. The only tip I have regarding load balancing the front end is to be sure you choose a session management strategy that works in a load-balanced environment. Perhaps that is an obvious suggestion. :-)
> 
> We're also using manual deployment -- we have a local git repo with branches for our various servers, and we pull from there to perform updates.
> 
> - Demian
> 
>> -----Original Message-----
>> From: Tod Olson [mailto:to...@uc...]
>> Sent: Wednesday, May 14, 2014 4:13 AM
>> To: vufind-tech
>> Subject: [VuFind-Tech] availability, deployment
>> 
>> vufind-tech,
>> 
>> As we're preparing to move from full-scale public beta to production this
>> summer, the question of availability has come up again. Currently we have the
>> PHP front-end running on a single VM, and separately Solr is in a master-slave
>> configuration, with indexing on one box and searching on the other. The main
>> concern is that unscheduled downtime be kept to an hour.
>> 
>> On the Solr side, I think we're okay. We could move to Solr Cloud, but running
>> 3 or 5 ZooKeeper instances seems a bit much for this scenario.  Currently in a
>> pinch we could point the front end to the solr master or to the staging
>> server, which would only be slightly out of date, while spinning up a new
>> slave. Better would be a hide Solr behind a load balancer.
>> 
>> On the front-end, a real failure would be more of a problem. Is anyone running
>> the front-end in a load-balanced or hot-spare environment? Any tips?
>> 
>> Finally, I'm re-visiting deployment. We're currently doing manual deployment.
>> Is anyone using a deployment tool? How's that working? Worth the trouble?
>> 
>> Best,
>> 
>> -Tod
>> 
>> 
>> 
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