Portworx on the DigitalOcean Cloud Platform

This guide shows you how you can easily deploy Portworx on the digitalocean.com cloud platform using Terraform infrastructure automation.

Following these simple instructions you can have a 3-node Portworx cluster up and running in under 5 minutes.

Other supported bare metal cloud providers are

• Packet.net
• Rackspace

Pre-requisites: You will need to have a valid Digital Ocean account

Step 1: Install Terraform

Download, unzip and install Terraform for your particular OS distro from the main Terraform Download site

Step 2: Clone the Terraporx Repository

git clone https://github.com/portworx/terraporx.git
cd terraporx/digital_ocean

Step 3: Select your OS Distro

This Digital Ocean repository currently supports 3 different Linux OS flavors:

• CoreOS
• Ubuntu16
• CentOS7

Select and cd into the OS distro of your choice.

The scripts for Ubuntu and CentOS will both install the current version of ‘docker-ce’ and launch a single ‘etcd’ container for the Portworx required ‘kvdb’.

CoreOS will configure user_data to launch the internal ‘etcd2’ service and also launch ‘px-dev’ as a ‘systemd’ service.

Step 4: Configure your Terraform variables

The following variable definitions are required in the vars.tf file in the corresponding OS directory:

• ‘do_token’ : Your Digital Ocean API key. Obtain or generate your token from here https://cloud.digitalocean.com/settings/api/tokens
• ‘region’ : These scripts require block storage, which is only available in these regions fra1, nyc1, sfo2 and sgp1
• ‘size’ : These are the valid instance sizes (strings) : “2gb”, “4gb”, “8gb”, “16gb”, “32gb”, “48gb”, “64gb”
• ‘volsize’ : These are the valid external volume sizes (integer in GB): 100, 250, 500, 1000, 2000
• ‘prefix’ : An arbitrary distinguishing name for your cluster prefix
• ‘ssh_key_path’ : The path to your private SSH key
• ‘pub_key’ : The contents of your public SSH key
• ‘ssh_fingerprint’ : The fingerprint of your SSH key, best obtained via ssh-keygen -E md5 -lf ~/.ssh/id_rsa.pub

In addition for CoreOS, you will need to supply a ‘discovery_url’ for the ‘etcd’ service, which can be best obtained from the output of curl "http://discovery.etcd.io/new?size=3"

Make sure the SSH key variables correspond to a valid SSH key in your Digital Ocean profile in the Security settings for your account https://cloud.digitalocean.com/settings/security

Step 5: Create your cluster

Run terraform apply . If all variables have been properly specified then after a few minutes, the following output will appear:

Outputs:

ip-addrs = [
    ssh core@138.197.219.111,
    ssh core@138.68.225.115,
    ssh core@138.68.248.179
]

You can then login to validate the cluster state:

ssh core@138.197.219.111

The authenticity of host '138.197.219.111 (138.197.219.111)' can't be established.
ECDSA key fingerprint is 0e:9f:26:88:2a:3b:66:3d:08:11:b7:70:84:df:92:1f.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '138.197.219.111' (ECDSA) to the list of known hosts.
Container Linux by CoreOS stable (1353.7.0)
Update Strategy: No Reboots
core@my-coreos-1 ~ $

pxctl status

Status: PX is operational
Node ID: dd2d8751-3740-4188-9915-741d1b2996f5
	IP: 138.197.219.111
 	Local Storage Pool: 1 pool
	POOL	IO_PRIORITY	RAID_LEVEL	USABLE	USED	STATUS	ZONE	REGION
	0	MEDIUM		raid0		100 GiB	2.0 GiB	Online	default	default
	Local Storage Devices: 1 device
	Device	Path		Media Type		Size		Last-Scan
	0:1	/dev/sda	STORAGE_MEDIUM_MAGNETIC	100 GiB		15 May 17 17:57 UTC
	total			-			100 GiB
Cluster Summary
	Cluster ID: px-cluster-coreos
	IP		ID					Used	Capacity	Status
	10.138.40.143	3a96fe16-ee59-4221-908a-53dea0d0734d	0 B	100 GiB		Online
	10.138.48.159	dd2d8751-3740-4188-9915-741d1b2996f5	0 B	100 GiB		Online (This node)
	10.138.40.145	9ad0ed12-16a1-4ecb-86da-bd5e7f321f05	0 B	100 GiB		Online
Global Storage Pool
	Total Used    	:  0 B
	Total Capacity	:  300 GiB

Step 6: (optional) Tear down your cluster

To teardown the cluster, use terraform destroy or terraform destroy --force