algo/docs/cloud-do.md

DigitalOcean cloud setup

API Token creation

First, login into your DigitalOcean account.

Select API from the titlebar. This will take you to the "Applications & API" page.

On the Tokens/Keys tab, select Generate New Token. A dialog will pop up. In that dialog, give your new token a name, and make sure Write is checked off. Click the Generate Token button when you are ready.

You will be returned to the Tokens/Keys tab, and your new key will be shown under the Personal Access Tokens header.

Copy or note down the hash that shows below the name you entered, as this will be necessary for the steps below. This value will disappear if you leave this page, and you'll need to regenerate it if you forget it.

Using DigitalOcean with Algo (interactive)

These steps are for those who run Algo using Docker or using the ./algo command.

Choose DigitalOcean as your provider:

What provider would you like to use?
    1. DigitalOcean
    2. Amazon Lightsail
    3. Amazon EC2
    4. Vultr
    5. Microsoft Azure
    6. Google Compute Engine
    7. Scaleway
    8. OpenStack (DreamCompute optimised)
    9. Install to existing Ubuntu 18.04 server (Advanced)
  
Enter the number of your desired provider
:
1

Enter a name for your server. Leave this as the default if you are not certain how this will affect your setup:

Name the vpn server:
[algo]:

After several prompts related to Algo features you will be asked for the API Token value. Paste the API Token value you copied when following the steps in API Token creation (you won't see any output as the key is not echoed by Algo):

Enter your API token. The token must have read and write permissions (https://cloud.digitalocean.com/settings/api/tokens):
 (output is hidden):

Finally you will be asked the region in which you wish to setup your new Algo server. This list is dynamic and can change based on availability of resources. Enter the number next to name of the region:

What region should the server be located in?
    1. ams3     Amsterdam 3
    2. blr1     Bangalore 1
    3. fra1     Frankfurt 1
    4. lon1     London 1
    5. nyc1     New York 1
    6. nyc3     New York 3
    7. sfo2     San Francisco 2
    8. sgp1     Singapore 1
    9. tor1     Toronto 1
  
Enter the number of your desired region
[6]
:
9

Using DigitalOcean with Algo (scripted)

If you are using Ansible directly to run Algo you will need to pass the API Token as do_token. For example:

ansible-playbook main.yml -e "provider=digitalocean
                                server_name=algo
                                ondemand_cellular=true
                                ondemand_wifi=true
                                local_dns=false
                                ssh_tunneling=false
                                windows=false
                                store_cakey=true
                                region=nyc3
                                do_token=token"

For more, see Scripted Deployment.

Using the DigitalOcean firewall with Algo

Many cloud providers include the option to configure an external firewall between the Internet and your cloud server. For some providers this is mandatory and Algo will configure it for you, but for DigitalOcean the external firewall is optional.

An Algo VPN runs its own firewall and doesn't require an external firewall, but you might wish to use the DigitalOcean firewall for example to limit the addresses which can connect to your Algo VPN over SSH, or perhaps to block SSH altogether.

To configure the DigitalOcean firewall, go to Networking, Firewalls, and choose Create Firewall.

Configure your Inbound Rules as follows:

Leave the Outbound Rules at their defaults.

Under Apply to Droplets enter the tag Environment:Algo to apply this firewall to all current and future Algo VPNs you create.