solr-4

Solr 4.x

This recipe allows you to configure a Solr server for your project using version 4.

The Solr version used in this recipe is 4.10.4 which is not supported officially anymore.

To enable Solr in your project follow these steps:

1. Create a directory named solr in your project's .ddev directory.
2. Copy docker-compose.solr.yml into .ddev.
3. Copy the core.properties into .ddev/solr and edit it according to your needs.
4. Create a new directory .ddev/solr/data.
5. Copy the configuration suitable for Solr 4.x (including schema.xml and solrconfig.xml) into a new directory named .ddev/solr/conf.
6. Run ddev start.

You now have a running Solr instance for your project. To get the URL for the instance run ddev describe.

By default the Solr core is named "dev" and the host is named "solr" so applications running inside the web container will be able to access the Solr service at http://ddev-<project>-solr:8983; this is also displayed by ddev describe.

Creating search indexes

The ddev start process should create the 'dev' index the first time it the project is started. However, in certain circumstances this does not happen. The solution is to manually create the index from the server:

$ ddev ssh --service solr
$ bin/solr create_core -c dev -d /solr-conf

This uses the Solr configuration files which ddev makes available from the path /solr-conf and creates an index named dev; it should result in the following output:

Copying configuration to new core instance directory:
/opt/solr/server/solr/dev

Creating new core 'dev' using command:
http://localhost:8983/solr/admin/cores?action=CREATE&name=dev&instanceDir=dev

{
  "responseHeader":{
    "status":0,
    "QTime":1580},
  "core":"dev"}

To create a additional indexes just change the dev portion of the command above, e.g.

$ ddev ssh --service solr
$ bin/solr create_core -c myindex -d /solr-conf

Notes

If you change the name of the core in core.properties you also need to update the name in docker-compose.solr.yml, section "services > solr > volumes".

Troubleshooting

If the Solr service is not available to the client project (e.g. Drupal) using the expected URL format, the Solr index may not have been created correctly. It is possible to access Solr directly from the host OS by loading its full URL, e.g. http://myproject.ddev.site:8983.

• The browser may redirect to https://myproject.ddev.site:8983. This is a default behavior in Safari. The solution is to either load the page in a different browser, e.g. Firefox.

Once http://myproject.ddev.site:8983 or http://myproject.ddev.site:8984 loads correctly it will redirect the browser to http://myproject.ddev.site:8983/solr/#/ or https://myproject.ddev.site:8984/solr/#/, which is the main dashboard page for Solr. From here it is possible to see how much memory and swap space the system is using.

To see if the index was created correctly click on the "Core Admin" link on the left menu (underneath "Dashboard" and "Logging"). This page should list the dev index, including when it was last updated ("lastModified") and the number of records in the index ("numDocs").

If the dev index is not listed, follow the instructions above to create it, then try reloading the admin page to confirm it was created as expected.

---

Special thanks to Jeff Geerling for building Docker images using versions of Apache Solr that have been deprecated long time ago.