Number of open files

GNU/Linux and Mac OS operating systems impose an upper limit on the number of concurrent files a user may have open. This article covers how to configure the number of open files on GNU/Linux that use systemd or sysvinitd. For… Read more →

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Where is my neo4j.log in Ubuntu Linux?

In most Neo4j server environments, all logs will be found in NEO4J_HOME/logs. However, when Neo4j is running as a service on a Ubuntu (debian) Linux environment, usually installed via apt-get install neo4j or similar, the neo4j.log is not present. To… Read more →

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Using apt to download a specific Neo4j debian package

By default, using apt-get to install Neo4j allows you to grab the current and previous stable releases. However, if you would like to install an older version, you can specify that. For reference, the Debian repo is located here: http://debian.neo4j.org/… Read more →

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Upgrading to Neo4j 3.0 Enterprise Step-by-Step – Linux

Neo4j 3.0 is a major release that includes both a directory structure reorganization and a configuration file/parameter name overhaul. This means that upgrading to it requires some additional consideration and a couple extra steps. In order to provide you with… Read more →

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Getting “Permission Denied” errors after using neo4j-admin commands

If you have leveraged Debian or RPM Packages to install Neo4j on Linux (or used one of the Public Cloud Marketplace offerings), you need to be careful of file and folder permissions. The installs create a user: “neo4j” that owns… Read more →

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neo4j-admin load causes “Not a valid Neo4j archive”

When using neo4j-admin load for loading a .dump file, following error is observerd: neo4j-admin load –from=/var/lib/neo4j/neo4j.dump –database=neo4j –force –verbose org.neo4j.cli.CommandFailedException: Not a valid Neo4j archive: / Caused by: org.neo4j.dbms.archive.IncorrectFormat: /var/lib/neo4j/neo4j.dump at org.neo4j.dbms.archive.Loader.openArchiveIn(Loader.java:172) at org.neo4j.dbms.archive.Loader.load(Loader.java:74) at org.neo4j.commandline.dbms.LoadCommand.load(LoadCommand.java:131) … 11 more Caused… Read more →

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Troubleshooting Neo4j Desktop Issues on Linux

This page describes common issues users may encounter when running Neo4j Desktop on Linux. Error: The SUID sandbox helper binary was found, but is not configured correctly. The SUID sandbox helper binary was found, but is not configured correctly. Rather… Read more →

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How to Setup Neo4j to Startup on Linux Server Reboot

If you want to emulate the Neo4j RPM service with a tar installation on Linux systems, do the following steps: As root: Copy the $NEO4J_HOME/bin/neo4j script file to /etc/init.d Edit the /etc/init.d/neo4j script file to uncomment the NEO4J_HOME variable and… Read more →

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