Vagrant HashiStack

Introduction

This projects lets you run a 3 Server + 3 Client Nomad/Consul cluster in 6 Virtualbox VMs on OS X using Packer & Terraform

Motivation
Prerequisites
Build
Deploy
Jobs
UI
HDFS
Spark
Vault
Attributions

Motivation

The HashiStack enables an organization to build/maintain multi-datacenter systems with ease. This project builds VirtualBox VMs that you can run Terraform against to experiment with Nomad, Consul, etc.

The workflow is:

Build ISOs (Packer)
Deploy VMs to your local machine (Terraform + 3rd Party Provider)
Play with Nomad, Consul, etc.

(Packer is used directly instead of Vagrant so the pipeline is the same when you build & deploy against hypervisors and clouds)

Prerequisites

OS X
Homebrew
brew install packer terraform nomad
brew cask install virtualbox

Build

cd packer
packer build -on-error=abort -force packer.json
cd output-virtualbox-iso
tar -zcvf ubuntu-16.04-docker.box *.ovf *.vmdk
cd ../..

Deploy

cd terraform
# Remove any cached golden images before redeploying
rm -rf ~/.terraform/virtualbox/gold/ubuntu-16.04-docker
terraform init
terraform apply
cd ..

You can ssh onto a host by running:

ssh -o 'IdentitiesOnly yes' [email protected]
# password: packer

Jobs

Take the IP Address of the server deployment and run Nomad jobs:

cd jobs
nomad run -address http://192.168.0.118:4646 redis-job.nomad
nomad run -address http://192.168.0.118:4646 echo-job.nomad
nomad run -address http://192.168.0.118:4646 golang-redis-pg.nomad
nomad run -address http://192.168.0.118:4646 raw.nomad
cd ..

You can view the logs of an allocation:

nomad logs -address http://192.168.0.118:4646 bf90d9cb

At a later time, you can stop the nomad jobs (but first look at the UI):

cd jobs
nomad stop -address http://192.168.0.118:4646 Echo-Job
nomad stop -address http://192.168.0.118:4646 Redis-Job
nomad stop -address http://192.168.0.118:4646 Golang-Redis-PG
nomad stop -address http://192.168.0.118:4646 view_files
cd ..

UI

Using the IP Address of the server deployment, you can:

view the Nomad UI at: http://192.168.0.118:4646/ui
view the Consul UI at: http://192.168.0.118:8500/ui

HDFS

You can deploy HDFS by running:

cd jobs
nomad run -address http://192.168.0.118:4646 hdfs.nomad
cd ..

(Give it a minute to download the docker image..)

Then you can view the UI at: http://192.168.0.118:50070/

Spark

SSH into a server node then start PySpark:

pyspark \
--master nomad \
--conf spark.executor.instances=2 \
--conf spark.nomad.datacenters=dc-1 \
--conf spark.nomad.sparkDistribution=local:///usr/local/bin/spark

Then run some PySpark commands:

df = spark.read.json("/usr/local/bin/spark/examples/src/main/resources/people.json")
df.show()
df.printSchema()
df.createOrReplaceTempView("people")
sqlDF = spark.sql("SELECT * FROM people")
sqlDF.show()

Vault

Init the Vault system and go through the process for 1 of the Vault servers

vault init   -address http://192.168.0.118:8200
vault unseal -address http://192.168.0.118:8200
vault auth   -address=http://192.168.0.118:8200 66344296-222d-5be6-e052-15679209e0e7
vault write  -address=http://192.168.0.118:8200 secret/names name=ryan
vault read   -address=http://192.168.0.118:8200 secret/names

Then unseal the other Vault servers for HA

vault unseal -address http://192.168.0.125:8200
vault unseal -address http://192.168.0.161:8200

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