JasonCubic / tf-dev-env

terraform hcl that creates an azure dev linux vm with a public IP

Azure Dev Environment Using Terraform

[Learn Terraform with Azure by Building a Dev Environment]Any missing videos (Like the VM setup) can currently be found here: https://courses.morethancertified.com/p/rfp-terraform-azure

To get logged in Azure account info: az account show

Terraform commands

• terraform version - see the version info
• terraform fmt - formate the .tf files in the folder
• terraform init - populates the .terraform dependency folder and build the lock file .terraform.lock.hcl
• terraform plan - shows what is going to be changed when an apply is done
• terraform apply - makes the changes in the plan and generates terraform.tfstate
• terraform apply -auto-approve - same as apply with no confirmation
• terraform state list - an easy way to list all of the resources we have
• terraform state show <one of the resources> - view just one of the specific resources
• terraform apply -destroy - removes everything that is in the terraform files
• terraform plan -destroy - preview what is going to be destroyed
• terraform apply -replace <one of the resources> - will destroy and re-apply the resource
• terraform apply -refresh-only -auto-approve - does not change anything but updates the terraform.tfstate (useful when adding data-sources or outputs)
• terraform output - gets the outputs from the terraform.tfstate file
• terraform output <one of the outputs> - gets the output from the terraform.tfstate file
• terraform console - provides an interactive console for evaluating expressions
• terraform console -var="host_os=linux" - how to define variables on the command line
• terraform console -var-file="osx.tfvars" - how to define variables in a specific tfvars file

The general syntax for terraform:

resource "<PROVIDER>_<TYPE>" "<NAME>" {
  [CONFIG ...]
}

• PROVIDER is the name of a provider (e.g., aws),
• TYPE is the type of resource to create in that provider (e.g., instance),
• NAME is an identifier you can use throughout the Terraform code to refer to this resource (e.g., my_instance), and
• CONFIG consists of one or more arguments that are specific to that resource.

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To get a graph.svg of the terraform plan

• Note: requires Graphviz to be installed

https://developer.hashicorp.com/terraform/cli/commands/graph

terraform graph | dot -Tsvg > graph.svg

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VM prices by size https://azureprice.net/?sortField=linuxPrice&sortOrder=true

to list all locations: az account list-locations --query "sort_by([].{DisplayName:displayName, Name:name}, &Name)" --output table

To check if a vm size is in a location

az vm list-skus --location westus2 --size Standard_A --all --output table
az vm list-skus --location westus2 --resource-type virtualMachines --zone --all --output table
az vm list-skus --size Standard_B1s --all --output table
az vm list-skus --location eastus --size Standard_B1s --all --output table

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how the ssh keypair was made

1. ssh-keygen -t rsa
2. save to C:\Users\jacubic\.ssh\mtcazurekey
3. skipped passphrase
4. to verify the files mtcazurekey and mtcazurekey.pub were created, run: ls -al ~/.ssh

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ssh into the linux box running in Azure

get the public IP address from the vm

1. get the list of state items: terraform state list
2. show the VM details: terraform state show azurerm_linux_virtual_machine.mtc-vm
3. find the public IP address
4. ssh into it (replace the IP with the real IP): ssh -i ~/.ssh/mtcazurekey adminuser@123.123.123.123
5. get the release info cat /etc/*release or lsb_release -a

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https://developer.hashicorp.com/terraform/language/data-sources