Monthly Archives: May 2016

Apache Spark – Installation

park is Hadoop’s sub-project. Therefore, it is better to install Spark into a Linux based system. The following steps show how to install Apache Spark. Step 1: Verifying Java Installation Java installation is one of the mandatory things in installing Spark. Try the following command to verify the JAVA version. $java -version If Java is… Read More »

Securing Neo4j Server

Secure the port and remote client connection accepts By default, the Neo4j Server is bundled with a Web server that binds to host localhost on port 7474, answering only requests from the local machine. This is configured in the conf/neo4j-server.properties file: # http port (for all data, administrative, and UI access) org.neo4j.server.webserver.port=7474 # Let the… Read More »

Neo4j Restoring Data

The Neo4j backups are fully functional databases. To use a backup, all you need to do replace your database folder with the backup. Just make sure the database isn’t running while replacing the folder. To restore from backup in a clustered environment, follow these steps: Shut down all instances in the cluster. Restore the backup… Read More »

Neo4j Performing Backups

Backup Commands # Performing a full backup: create a blank directory and run the backup tool mkdir /mnt/backup/neo4j-backup ./bin/neo4j-backup -host 192.168.1.34 -to /mnt/backup/neo4j-backup # Performing an incremental backup: just specify the location of your previous backup ./bin/neo4j-backup -host 192.168.1.34 -to /mnt/backup/neo4j-backup # Performing an incremental backup where the service is listening on a non-default port… Read More »

Neo4J High Availability setup tutorial

This guide will help you understand how to configure and deploy a Neo4j High Availability cluster. Two scenarios will be considered: Configuring three instances to be deployed on three separate machines in a setting similar to what might be encountered in a production environment. Modifying the former to make it possible to run a cluster… Read More »

Neo4J install in linux

Linux Linux Packages For Debian packages, see the instructions at http://debian.neo4j.org/. After installation you may have to do some platform specific configuration and performance tuning. For that, refer to Section 24.4, “Performance Guide”. Unix Console Application Download the latest release from http://neo4j.com/download/. Select the appropriate tar.gz distribution for your platform. Extract the contents of the archive,… Read More »

Truecrypt Hidden Volume

Please refer to EncryptedFilesystems for further documentation. Contents TrueCrypt 7.1 volume example TrueCrypt 4.3a hidden volume example For instructions on using the new TrueCrypt GUI, please see TrueCrypt GUI There is a lot of documentation on how to create an encrypted volume. However, a significant problem caused by most of the existing implementations is that… Read More »

TrueCrypt

Please refer to EncryptedFilesystems for further documentation. Contents Introduction Before we start How it works Installing TrueCrypt Two Different Types of Drive Using the Physical Drive Method Setting up the Encrypted Drives How to Mount the Drive Manually Mounting Using a File Things to Remember Introduction This is a guide explaining how to create a… Read More »

Encrypted Filesystem On Intrepid

Candidate for Deletion This article may not be appropriate for this wiki, and may be deleted. More info… Please refer to EncryptedFilesystems for further documentation. Contents Summary Gather materials Make a partition plan Perform initial install Become root Install additional packages Set up the initial ramdisk Create the encrypted partition Mount the partition for setup… Read More »

Encrypted Filesystems Via Ubiquity

Please refer to EncryptedFilesystems for further documentation. Contents The Desktop CD installer (ubiquity) currently does not provide support for setting up LVM or encrypted partitions. With the recipe below, the Desktop CD can be used to install Ubuntu on a previously created (optionally encrypted) LVM. Boot desktop CD, open terminal, and install missing packages: apt-get… Read More »