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Creating Economical Ubuntu VM for Development in Azure

#ubuntu #programming #cloudnative

We can create an Ubuntu VM in Azure and install all the tools needed for it. While doing so we can also consider how we spend less on this one.

There are many ways by which you can create a VM. We will have a script to do so. While we have the script which will work on Azure CLI has some consideration.

  • Use unmanaged disk. This will immensely reduce the cost of VM as compared to the Standard or Premium SSD which is the default. We will use --use-unmanaged-disk OTHERWISE Azure CLI will use managed disk with Premium SSD. > While doing so you don't need to pre-create a storage. If we consider to create a storage and mention that it will be Locally Redundant then it would first find if there is any such storage matching the criteria. If nothing is found then it would create the storage before creating the VM.
  • Network: Virtual Network, Subnet, Public IP, NSG (for port 22), NIC all will be created automatically by Azure CLI before the VM creation.
  • Enable Auto-Shutdown. We must explicitly apply this setting post VM creation it is provisioned. A big cost saving.

Script to Create VM

Login to Azure CLI

If you run the below command then it would prompt you to login in browser. Sometimes it opens the browser and you just provide your credentials. If Multi-Factor is enabled then it would also kick in.

If you try the below from a headless Linux box then it would give an URL with a key. You open a browser in any machine and use that URL, enter the key and provide azure login - CLI will allow you to work from now onwards.

az login
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If you are using Cloud Shell then you are already logged in. Just to ensure that you are in right subscription if you have access to more than one subscription, you may run the below command.

# to see the list of subscription you have access to  az account list # to check the current subscription run az account show # to set the current subdcription  az account set --subscription {{name/guid}}
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Creating Resource Group and VM

Now you can create the Azure Resource Group and the VM from the below Script by either copying each line one by one and pasting it to Azure CLi or by creating a .sh file to run as a whole.

g="rg-ubuntu" l="eastus" admin="ubuntuadmin" # Password: 12 letter long one caps, one small, one numeric, one special char atleast passwd="TwelveCharecter123!@#" vmname="ubuntu-dev" size="Standard_DS2_v2" echo "--------------- Creating Resource Group" az group create -n $g -l eastus echo "--------------- Creating Ubuntu Virtual Machine" # Cost saving use --use-unmanaged-disk --storage-sku "Standard_LRS" az vm create -n $vmname -g $g --admin-username $admin --admin-password $passwd --authentication-type password --os-disk-size-gb 200 --image ubuntults --size $size --use-unmanaged-disk --storage-sku "Standard_LRS" echo "--------------- Setting Auto-shutdown (UTC)" az vm auto-shutdown -n $vmname -g $g --time 1730 #Public IP will be printed after this too  az vm show -d -n $n -g $g --query "publicIps" -o tsv
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In above we have created Resource Group, Virtual Machine, and Auto-Shut down. Boom!!!

Now it is time to connect the VM or ssh into it through the Public Ip. To get the public ip you can use the below command,

n="ubuntu-dev" g="rg-ubuntu" az vm show -d -n $n -g $g --query "publicIps" -o tsv
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Then using the Public IP ssh into the VM to install the tools

# 192.168.1.1 Sample Public IP $ ssh ubuntu-admin@192.168.1.1
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To start this VM daily

Try to use Sceduled Logic Apps or use the below script

n="ubuntu-dev" g="rg-ubuntu" az vm start -n $n -g $g
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To deallocate (stop and release IPs) 

az vm deallocate -n $n -g $g
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Installing Tools

We will be installing the below tools using snap

  • Git (already there)
  • Docker ce
  • Kubectl
  • Azure CLI
  • Dotnet Core
  • Go
  • Python (already there)
  • Node.js
  • Open JDK

You can make a file like script.sh and save to your home directory. Then follow few steps,

# create a blank file $ touch script.sh # make it executable  $ chmod +x script.sh # then run the file - sit back and relax $ ./script.sh
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Sample installation shell script

If you have the script in your local terminal then using the Public IP you can do a secure file transfer to the newly created remote VM.
$ scp script.sh {adminuser}@{publicIp}:/home/{adminuser}

Copy the whole content to script.sh

#/bin/bash echo "-------------- Task 1: Snap Install" sudo apt update sudo apt install snapd echo "-------------- Task 2: Installing Kubectl" sudo snap install kubectl --classic echo "-------------- Task 3: Installing Azure CLI" curl -sL https://aka.ms/InstallAzureCLIDeb | sudo bash echo "-------------- Task 4: Dot Net Core 5" sudo snap install dotnet-sdk --classic sudo snap alias dotnet-sdk.dotnet dotnet echo "-------------- Task 5: Open JDK" sudo snap install openjdk echo "-------------- Task 6: Installing Node.js " sudo snap install node --classic echo "-------------- Task 7: Go Lang" sudo snap install go --classic echo "-------------- Task 8: Installing Docker CLI" sudo snap install docker set +e #on error continue sudo addgroup --system docker sudo adduser $USER docker newgrp docker sudo snap disable docker sudo snap enable docker echo "-------------- Task 9: Installing and stating Minikube" # sudo snap install minikube curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64 sudo install minikube-linux-amd64 /usr/local/bin/minikube
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Connecting Remote Ubuntu from Visual Studio Code


https://youtu.be/UkiPauLyzg4

This should ideally setup your dev environment.

Clean Up everything

Simply go to Azure Portal and delete the resource group or run the below command

az group delete -n RESOURCE_GROUP_NAME
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Troubleshooting

Notice in this script there are 9 Taks and the terminal will print the current tasks and its output. At any given point in time if the terminal ends due to any reason without moving further then the tools are not installed completely,

  • You run the same script again
  • Or type $ exit and this would start executing the remaining of the script.

Most of the time error could be due to the docker group and its assignment. Then run them manually. Till I find a solid way to run the flawless script.

Enjoy

Wriju @wrijugh

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