Installation guide


This document describes how to install MagnetoDB on Ubuntu 12.04 using Apache Cassandra as database backend.

The following components will be installed also
  • Cassandra cluster with 3 nodes
  • JDK and JNA
  • Python 2.7

All packages will be installed in /opt/


MagnetoDB uses authorization via Keystone. Keystone should be configured beforehand on this or another host. You should configure user space for MagnetoDB in Keystone. This document does not describe configuring Keystone.

You should have root access or be logged in as any user with rights to execute commands via sudo.

Creating a User

Creating a user ‘’magneto’‘:

groupadd magneto
useradd -g magneto -s /bin/bash -d /home/magneto -m magneto
passwd magneto
Enter new UNIX password:*****
Retype new UNIX password:*****

Giving magneto user passwordless sudo privileges:

grep -q "^#includedir.*/etc/sudoers.d" /etc/sudoers || echo "#includedir /etc/sudoers.d" >> /etc/sudoers
( umask 226 && echo "magneto ALL=(ALL) NOPASSWD:ALL" > /etc/sudoers.d/50_magneto )

su magneto
cd ~

Installing JDK and JNA

Installing packages:

sudo apt-get -y install openjdk-7-jdk libjna-java
sudo update-alternatives --set java /usr/lib/jvm/java-7-openjdk-amd64/jre/bin/java

Installing Python 2.7

Ubuntu 12.04 already has python2.7

Installing Cassandra

It is recommended to deploy Cassandra cluster on dedicated hardware. However in order to try it, you can use one node installation as described below.

Please don’t do it for production.

To install the Cassandra cluster on the same node, we recommend using the CCM (Cassandra Cluster Manager)

ccm works on localhost only for now. So if you want to create more than one node clusters the simplest way is to use multiple loopback aliases. In this example we will build a cluster of three nodes.

Creating loopback aliases:

sudo ip addr add dev lo
sudo ip addr add dev lo

# Checking results using this command:
sudo ip addr show lo

Installing required packages:

sudo apt-get update
sudo apt-get -y install ant libyaml-0-2 libyaml-dev python-setuptools python-yaml libev4 libev-dev

Installing Cassandra Cluster Manager:

sudo mkdir -p /opt/ccm
sudo chown -R magneto:magneto /opt/ccm

git clone /opt/ccm
cd /opt/ccm
sudo ./ install

Creating a cluster named ‘’Storage’’ of three nodes of Cassandra 2.1.3:

ccm create Storage -v 2.1.3
ccm populate -n 3

Starting Cassandra Cluster:

ccm start

# Checking results using this commands:
ccm status
ccm node1 ring

Creating keyspaces in cassandra:

# Replication factor is 3
echo "CREATE KEYSPACE magnetodb WITH REPLICATION = { 'class' : 'SimpleStrategy', 'replication_factor' : 3 };" > ~/.ccm/cql.txt
echo "CREATE KEYSPACE user_default_tenant WITH REPLICATION = { 'class' : 'SimpleStrategy', 'replication_factor' : 3 };" >> ~/.ccm/cql.txt
echo 'CREATE TABLE magnetodb.table_info(tenant text, name text, id uuid, exists int, "schema" text, status text, internal_name text, last_update_date_time timestamp, creation_date_time timestamp, PRIMARY KEY(tenant, name));' >> ~/.ccm/cql.txt
echo 'CREATE TABLE magnetodb.backup_info(tenant text, table_name text, id uuid, name text, status text, start_date_time timestamp, finish_date_time timestamp, location text, strategy map<text, text>, PRIMARY KEY((tenant, table_name), id));' >> ~/.ccm/cql.txt
echo 'CREATE TABLE magnetodb.restore_info(tenant text, table_name text, id uuid, status text, backup_id uuid, start_date_time timestamp, finish_date_time timestamp, source text, PRIMARY KEY((tenant, table_name), id));' >> ~/.ccm/cql.txt
echo 'CREATE TABLE magnetodb.dummy(id int PRIMARY KEY);' >> ~/.ccm/cql.txt
ccm node1 cqlsh -f ~/.ccm/cql.txt

Installing MagnetoDB

Installing required packages:

sudo apt-get -y install build-essential python-dev
sudo easy_install-2.7 pip

Installing MagnetoDB:

sudo mkdir -p /opt/magnetodb
sudo chown -R magneto:magneto /opt/magnetodb

git clone /opt/magnetodb
cd /opt/magnetodb
sudo pip2.7 install -r requirements.txt -r test-requirements.txt

Creating directories and log files:

sudo mkdir -p /var/log/magnetodb
sudo touch /var/log/magnetodb/magnetodb.log
sudo touch /var/log/magnetodb/magnetodb-streaming.log
sudo touch /var/log/magnetodb/magnetodb-async-task-executor.log
sudo chown -R magneto:magneto /var/log/magnetodb

Configuring MagnetoDB

Before starting magnetos must specify your own values for some variables in the configuration files: /opt/magnetodb/etc/api-paste.ini, /opt/magnetodb/etc/streaming-api-paste.ini, /opt/magnetodb/etc/magnetodb-api.conf, /opt/magnetodb/etc/magnetodb-async-task-executor.conf. As a minimum, you must specify a value for the following variables as example:

auth_host =
auth_port = 35357
auth_protocol = http
admin_tenant_name = service
admin_user = magnetodb
admin_password = magneto-password

auth_uri =

rabbit_host = localhost
rabbit_userid = userid
rabbit_password = pass

Running MagnetoDB:

python /opt/magnetodb/bin/magnetodb-api-server --config-file /opt/magnetodb/etc/magnetodb-api-server.conf
python /opt/magnetodb/bin/magnetodb-streaming-api-server --config-file /opt/magnetodb/etc/magnetodb-streaming-api-server.conf
python /opt/magnetodb/bin/magnetodb-async-task-executor --config-file /opt/magnetodb/etc/magnetodb-async-task-executor.conf