Upgrade Solr to at least 8.11.1

[hortongn]

Descriptive summary

Info Sec is requiring us to upgrade our Log4j instances to a current, safe version. This means upgrading Solr to at least 8.11.1 in our dev, qa, and production server environments

[scherztc]

We were able to update solr_wrapper to point to 8.11.1 in our local environment and in circleci without breaking the application.

#960

The next step is to use the Puppet Vagrant approach to manually update on ScholarDEV.

https://github.com/uclibs/scholar-puppet-vagrant/blob/scholar-3-update/modules/solr/manifests/init.pp

We still haven't tested the need for a Reindex.

ActiveFedora::Base.reindex_everything

[scherztc]

Procedure

• Login into Solr Server

• As the root user, stop solr with service solr stop

• Back up /var/solr to ... tar -cvf solr.tar solr

• Download solr-7.7.3.tgz from https://solr.apache.org/downloads.html

• Uncompress solr-7.7.3.tgz to /opt/solr-7.7.3

• Delete the existing /opt/solr symlink... rm solr

• Create a new symlink ln -s solr-7.7.3 solr

• As the root user, start solr with service solr start

• Test Application... Browse. View work.

• As the root user, stop solr with service solr stop

• Download solr-8.11.1.tgz from https://solr.apache.org/downloads.html

• Uncompress solr-8.11.1.tgz to /opt/solr-8.11.1

• Delete the existing /opt/solr symlink... rm solr

• Create a new symlink for /opt/solr-8.11.1 to /opt/solr.... ln -s solr-8.11.1 solr

• Delete everything from the /var/solr/data/collection1 folder

• Replace schema.xml and solrconfig.xml with Sets solr version to 8.11.1 and fedora version to 4.7.5 #960 in the conf folder (make one)

• You might need to remove the StandardFilterFactory lines from /var/solr/data/collection1/conf/schema.xml

• As the root user, start solr with systemctl start solr

• Double Tunnel

• your-computer:~$ ssh sshap1prd01l.ad.uc.edu -L 8983:localhost:1234
  [SSHAP1PRD01L ~]$ ssh libschdwl1.private -L 1234:libschdal1.private:8983
  In your browser visit http://localhost:8983/

• Create a new collection1 in the SOLR Admin Web interface

• Use collection1, collection1, schema.xml, and solrconfig.xml

• As the root user, start solr with systemctl start solr

• bundle exec rails console production on web server

• Try a Hyrax solr reindex (ActiveFedora::Base.reindex_everything)

[scherztc]

https://solr.apache.org/guide/8_1/indexupgrader-tool.html
https://github.com/samvera/hyrax/blob/8b98b840bc16e98cc44a4a3636943bc406fb33eb/.dassie/solr/conf/schema.xml
https://solr.apache.org/guide/8_1/reindexing.html

[scherztc]

I was able to successfully upgrade SOLR7 to SOLR8 (using the schema.xml and solrconfig.xml from the Avalon update) with items in Fedora that I created manually in SOLR7 (instead of seed data). I was able to then upgrade to SOLR8 and run the re-index while keeping the work types, instead of converting them to Generic Works.

I have documented the procedure above in the issue. I think that makes us ready to do the SOLR update on production.

[scherztc]

How to roll back to solr version 6.6.1
Login into Solr Server
As the root user, stop solr with service solr stop
Delete the existing /opt/solr symlink
Create a new symlink ln -s /opt/solr-6.6.1 to /opt/solr
Delete everything from the /var/solr/data/collection1 folder
Replace schema.xml and solrconfig.xml with #960 in the conf folder (make one)
You might need to remove the StandardFilterFactory lines from /var/solr/data/collection1/conf/schema.xml
As the root user, start solr with service solr start
Create a new collection1 in the SOLR Admin Web interface
Use collection1, collection1, schema.xml, and solrconfig.xml
Login into Web Server
As the Scholar user, cd /srv/apps/curate_uc
Open rails console
bundle exec rails console production on web server
Try a Hyrax solr reindex (ActiveFedora::Base.reindex_everything)

[scherztc]

UNC-Libraries/hy-c#764

[scherztc]

https://solr.apache.org/guide/8_0/reindexing.html

[scherztc]

https://github.com/projectblacklight/blacklight/wiki/Configuration---Solr-fields

[scherztc]

https://github.com/scientist-softserv/hyrax-v2_graph_indexer/tree/main