Server on AWS

Provision a Linux server in Amazon Web Services

You can provision a server suitable to install OpenServerless in cloud provider Amazon Web Services ops as follows:

1. install aws, the AWS CLI

2. get Access and Secret Key

3. configure AWS

4. provision a server

5. retrieve the ip address to configure a DNS name

Once you have a Linux server up and running you can proceed configuring and installing OpenServerless.

Installing the AWS CLI

Our cli ops uses under the hood the AWS CLI version 2, so you need to dowload and install it following those instructions.

Once installed, ensure it is available on the terminal executing the following command:

aws --version

you should receive something like this:

aws-cli/2.9.4 Python/3.9.11 Linux/5.19.0-1025-aws exe/x86_64.ubuntu.22 prompt/off

Ensure the version is at least 2.

Getting the Access and Secret key

Next step is to retrieve credentials, in the form of an access key and a secret key.

So you need to:

• access the AWS console following those instructions create an access key and secret key;
• give to the credentials the minimum required permissions as described here to build an EKS cluster.

You will end up with a couple of string as follows:

Sample AWS Access Key ID: AKIAIOSFODNN7EXAMPLE Sample AWS Secret Access
Key: wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY

Take note of them as you need them for configuring out CLI.

Configure AWS to provision a server

Before you can provision a Linux server you have to configure AWS typing the command:

ops config aws

The system will then ask the following questions:

*** Please, specify AWS Access Id and press enter.
AKIAIOSFODNN7EXAMPLE

*** Please, specify AWS Secret Key and press enter.
wJalrXUtnFEMI/K7MDENG/bPxRfiCYEXAMPLEKEY
*** Please, specify AWS Region to use and press enter.
To get a list of valid values use:
  aws ec2 describe-regions --output table

Just press enter for default [us-east-1]:

*** Please, specify AWS public SSH key  and press enter.
If you already have a public SSH key in AWS, provide its name here.
If you do not have it, generate a key pair with the following command:
  ssh-keygen
The public key defaults to ~/.ssh/id_rsa.pub and you can import with:
  aws ec2 import-key-pair --key-name nuvolaris-key --public-key-material --region=<your-region> fileb://~/.ssh/id_rsa.pub

Just press enter for default [devkit-74s]:

*** Please, specify AWS Image to use for VMs and press enter.
The suggested image is an Ubuntu 22 valid only for us-east-1
Please check AWS website for alternative images in other zones

Just press enter for default [ami-052efd3df9dad4825]:

*** Please, specify AWS Default user for image to use for VMs and press enter.
Default user to access the selected image.

Just press enter for default [ubuntu]:

*** Please, specify AWS Instance type to use for VMs and press enter.
The suggested instance type has 8GB and 2vcp
To get a list of valid values, use:
aws ec2 describe-instance-types --query 'InstanceTypes[].InstanceType' --output table

Just press enter for default [t3a.large]:

*** Please, specify AWS Disk Size to use for VMs and press enter.
Just press enter for default [100]:

Provision a server

You can provision one or more servers using ops. The servers will use the parameters you have just configured.

You can create a new server with:

ops cloud aws vm-create <server-name>

❗ IMPORTANT

Replace <server-name> with a name you choose, for example ops-server

The command will create a new server in AWS with the parameters you specified in configuration.

You can also:

1. list servers you created with ops cloud aws vm-list

2. delete a server you created and you do not need anymore with ops cloud aws vm-delete <server-name>

Retrieve IP

The server will be provisioned with an IP address assigned by AWS.

You can read the IP address of your server with

ops cloud aws vm-getip <server-name>

You need this IP when configuring a DNS name for the server.