Vagrant Cassandra

This project contains templates for learning how to install and configure Apache Cassandra(R) or DataStax Enterprise (DSE) on a local dev machine. It uses Vagrant to configure and run virtual machines (VMs) running in VirtualBox. Vagrant enables quickly building environments in a way that is repeatable and isolated from your host system. This makes it perfect for experimenting with different configurations of Cassandra and DSE.

Why create yet another Cassandra on Vagrant system? Many scripts and Vagrant projects are already fully assembled and configured. Instead, I like to learn from the ground up so I can better understand each step. In the templates below I've also tried to minimize external dependencies, and the number of tools which need to be installed. (For example, I don't use Chef or Puppet here.)

Related Projects

Here are a few related projects I learned from while assembling my Vagrant setup:

calebgroom/vagrant-cassandra - uses Chef to quickly create a 3-node cluster
dholbrook/vagrant-cassandra - another Chef
oeelvik/vagrant-puppet-hadoop-datastax - using Puppet for provisioning
cjohannsen81/dse-vagrant - similar to my approach, just using script provisioning

You may also find bcantoni/vagrant-deb-proxy helpful for speeding up Ubuntu package installs. See Package Caching below for details.

Posts from my blog related to this project:

Screencasts

Here are some quick screencasts which walk through the three different templates in this project:

1. Base

2. MultiNode

Note: This one is obsolete because OpsCenter no longer supports open source Apache Cassandra, but I've left it here to show what OpsCenter used to look like.

3. MultiDC

Note: This one is obsolete because OpsCenter no longer supports open source Apache Cassandra, but I've left it here to show what OpsCenter used to look like.

Installation

Note: These scripts were created on a Mac OS X 10.13/10.14 host with Vagrant v2.2.x and VirtualBox v6.0. Everything should work for Linux or Windows hosts as well, but I have not tested those platforms. Shell scripts which are meant to run on the host (like up-parallel.sh or down.sh) would need to have Windows equivalents created.

Edit your local Hosts file to include the private network addresses (this makes it much easier to refer to the VMs by hostname):

 # vagrant-cassandra private network hosts
 10.211.54.10    cassandra
 10.10.10.10     dse0
 10.10.10.11     dse1
 10.10.10.12     dse2
 10.10.10.13     dse3
 10.10.10.14     dse4
 10.10.11.10     dse10
 10.10.11.11     dse11
 10.10.11.12     dse12
 10.10.11.13     dse13
 10.10.11.14     dse14
 10.211.55.100   node0
 10.211.55.101   node1
 10.211.55.102   node2
 10.211.55.103   node3
 10.211.55.110   node10
 10.211.55.111   node11
 10.211.55.112   node12
 10.211.55.113   node13
 10.211.55.114   node14
 10.211.55.115   node15
 10.211.55.116   node16

Alternatively, try the vagrant-hostsupdater plugin which should do the same thing automatically. (I have not tried it.)

Install VirtualBox
Install Vagrant

Check that both are installed and reachable from a command line:

 $ vagrant --version
 Vagrant 2.2.7
 $ VBoxManage --version
 6.0.16r135674

Clone this repository

 $ git clone https://github.com/bcantoni/vagrant-cassandra.git
 $ cd vagrant-cassandra

Try each of the templates listed below, for example:
```
 $ cd 1.Base
 $ vagrant up
 $ vagrant ssh
```

Package Caching

These Vagrant files are configured to use a Debian/Ubuntu APT cache if configured. This can make the provisioning step faster and less susceptible to Ubuntu repository connection speeds.

If you want to run your own locally (through Vagrant), take a look at bcantoni/vagrant-deb-proxy.

To enable package caching, set the DEB_CACHE_HOST environment variable before creating the Vagrant VMs, for example:

$ export DEB_CACHE_HOST="http://10.211.54.100:8000"
$ vagrant up

Using Vagrant

The Vagrant documentation is very good and I recommend going through the Getting Started section.

These are the most common commands you'll need with this project:

vagrant up - Create and configure VM
vagrant ssh - SSH into the VM
vagrant halt - Halt the VM (power off)
vagrant suspend - Suspend the VM (save state)
vagrant provision - Run (or re-run) the provisioner script
vagrant destroy - Destroy the VM

Templates

These are the starting templates which go through increasing levels of complexity for a Cassandra installation. Each of these is located in its own subdirectory with its own Vagrantfile (the definition file used by Vagrant) and a README with instructions and more details.

1. Base

This is a base template with only Java pre-installed. It's a good getting started point to explore installing Cassandra and DataStax packages.

1. Base CentOS

Same as above, but using CentOS instead of Ubuntu.

2. MultiNode

(Obsolete.)

3. MultiDC

This template builds and configures a multi-datacenter cluster (6 Cassandra nodes in 2 logical datacenters).

4. DSE

This template focuses on DataStax Enterprise (DSE) and can build a variable number of nodes in a cluster.

5. Installer

(Obsolete.)

6. DDAC

This template uses DataStax Distribution of Apache Cassandra (DDAC) to build a variable number of nodes in a cluster.

Notes

Most templates are currently based off the ubuntu/xenial64 box which is running 64-bit Ubuntu 16.04 LTS. You can change the vm.box value if you want to try different guest operating systems.

License

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.