Moera Search Engine

Resources

• Live network: https://web.moera.org

• Live search engine: https://search.moera.org

• Read more about Moera at https://moera.org

• Learn more about search in Moera: https://moera.org/overview/other.html

• Bugs and feature requests: https://github.com/MoeraOrg/moera-issues/issues

• How to set up a complete Moera Development Environment: http://moera.org/development/development-environment.html

Installation instructions

1. As prerequisites, you need to have Java 21+, Neo4j Community 2025.04+ (with APOC plugin) and OpenSearch 2.19+ installed.

2. Create an empty Neo4j database and an empty OpenSearch index.

3. Create a directory <media>, where the server will keep media files.

4. Go to the source directory.

5. Create application-dev.yml file with the following content:

    search:
      signing-key: "26c2bf7f3108c8b177a6a99ec006ffcc33efbe8c7aeeac0afee6619744a2df82"
      address: "127.0.0.1"
      naming-server: "https://naming-dev.moera.org/moera-naming"
   
    database:
      url: <db url>
      user: <db user>
      password: <db password>
      database: <db name>
   
    index:
      host: <opensearch host>
      user: <opensearch user>
      password: <opensearch password>
      index-name: <opensearch index name>
   
    media:
      path: <media>

   signing-key is a private signing key for search node on the development naming server. If you register a different node name, change signing-key and node-name settings accordingly.

6. By default, the server runs on port 8082. If you want it to run on a different port, add these lines to the file above:

   server:
     port: <port number>

7. Execute ./run script.

8. If you use your own naming server, make sure its location is set correctly in node settings.