CODEWITHSUNDEEP
azurevirtual-machineterraform
Francois
Francois

Reputation: 10978

Change VM size after provisioning

How can I downsize a virtual machine after its provisioning, from terraform script? Is there a way to update a resource without modifying the initial .tf file?

Upvotes: 1

Views: 3722

Answers (2)

J. Day
J. Day

Reputation: 11

How about passing in a command line argument that is used in a conditional variable?

For example, declare a conditional value in your .tf file:

vm_size = "${var.vm_size == "small" ? var.small_vm : var.large_vm}"

And when you want to provision the small VM, you simply pass the vm_size variable in on the command line:

$ terraform apply -var="vm_size=small"

Upvotes: 0

Shui shengbao
Shui shengbao

Reputation: 19223

I have a solution, maybe you could try.

1.Copy your tf file, for example cp vm.tf vm_back.tf and move vm.tf to another directory.

2.Modify vm_size in vm_back.tf. I use this tf file, so I use the following command to change the value.

sed  -i 's/vm_size               = "Standard_DS1_v2"/vm_size               = "Standard_DS2_v2"/g' vm_back.tf

3.Update VM size by executing terraform apply.

4.Remove vm_back.tf and mv vm.tf to original directory.

Upvotes: 1

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