[allsearch_api] Keep Solr aligned with other applications

[maxkadel]

What maintenance needs to be done?

The Allsearch API reads from the Solr collection for a number of our applications. We have these variables in a config file in the application right now; however, it is easy for these to drift from the correct values (see, e.g., there were almost three months between when the staging solr url was changed for DPUL and when we updated it in the Allsearch API.

Level of urgency

• [ ] High
• [x] Moderate
• [ ] Low

Why is this maintenance needed?

• We need a way to keep this information aligned and avoid drift.

Acceptance criteria

• [ ] Allsearch-api and the source application both consult the same "source of truth" for each Solr request
• [ ] The "source of truth" does not add a lot of latency to the request
• [ ] Don't need to run the allsearch-api playbook to stay in sync (for example, if a solr collection is changed)

Applications

• [ ] catalog / orangelight
• [ ] dpul
• [ ] finding aids / pulfalight
• [ ] pulmap

Implementation notes, if any

• Set up a solr url on the load balancer for each application to look at. This url would point to a specific solr host and a specific solr collection. e.g. http://catalog-solr.princeton.edu could point to http://lib-solr8-prod.princeton.edu:8983/solr/catalog-alma-production
• Both allsearch and the catalog would consult http://catalog-solr.princeton.edu rather than http://lib-solr8-prod.princeton.edu:8983/solr/catalog-alma-production

current url	possible new name
http://lib-solr8-prod.princeton.edu:8983/solr/catalog-alma-production	catalog-solr-prod.lib.princeton.edu
http://lib-solr8d-staging.princeton.edu:8983/solr/catalog-qa	catalog-solr-qa.lib.princeton.edu
http://lib-solr8d-staging.princeton.edu:8983/solr/catalog-staging	catalog-solr-staging.lib.princeton.edu
http://lib-solr8-prod.princeton.edu:8983/solr/dpul-production	dpul-solr-prod.lib.princeton.edu
http://lib-solr8d-staging.princeton.edu:8983/solr/dpul-staging	dpul-solr-staging.lib.princeton.edu
http://lib-solr8-prod.princeton.edu:8983/solr/pulfalight-production	pulfalight-solr-prod.lib.princeton.edu
http://lib-solr8d-staging.princeton.edu:8983/solr/pulfalight-qa	pulfalight-solr-qa.lib.princeton.edu
http://lib-solr8d-staging.princeton.edu:8983/solr/pulfalight-staging	pulfalight-solr-staging.lib.princeton.edu
http://lib-solr8-prod.princeton.edu:8983/solr/pulmap	maps-solr-prod.lib.princeton.edu
http://lib-solr8d-staging.princeton.edu:8983/solr/pulmap-staging	maps-solr-staging.lib.princeton.edu

[maxkadel]

Closing in favor of #5013