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neo4jbackupdatabasenosql

Backup neo4j community edition offline in unix: mac or linux


Previously I had a problem when making a 'backup' as shown in this question where I get an error when trying to restore the database because I did a copy when the database was running.

So I did an experiment with a new database from another computer (this time with ubuntu) I tried this:

  • I created some nodes and relations, very few like 10 (the matrix example).
  • Then I stopped the service neo4j
  • I copied the folder data that contains graph.db to another location
  • After that I deleted the graph.db folder and started neo4j
  • It created automatically a new graph.db folder and the database runs as new without any data, that is normal.
  • Then I stopped again and paste the old graph.db folder

I get an error:

 Starting Neo4j Server...WARNING: not changing user waiting 
 for server to be ready... Failed to start within 120 seconds.

The error appears after 5 seconds not after 120 seconds.

  • I tried pasting the folder called data. Same error.

How should I backup and restore in neo4j community offline manually?

I read in some posts that you only copy and restore but that does not work.

Thank you for your help


Solution

  • Online backup, in a sense of taking a consistent backup while Neo4j is running, is only available in Neo4j enterprise edition. Enterprise edition's backup also features a verbose consistency check of the backup, something you do not get in community either.

    The only safe option in community edition is to shutdown Neo4j cleanly and copy away the graph.db folder recursively. I'm typically using:

    cd data
    tar -zcf graph.db.tar.gz graph.db/
    

    For restoring you shut down neo4j, clean out a existing graph.db folder and restore the original graph.db folder from your backup:

    cd data
    rm -rf graph.db
    tar -zxf graph.db.tar.gz