cannot deploy controller in Azure region Juju claims to accept

[Matthew Davis]

# Steps to reproduce

* Follow [these steps](https://docs.jujucharms.com/2.5/en/clouds-azure) to add Azure as a cloud
* `juju show-cloud azure | grep australiaeast`
* `juju set-default-region azure australiaeast`
* `juju bootstrap azure azure-controller`

# Expected behavior

A controller is installed in Azure's australiaeast region

# Actual behavior

The Juju installer fails. The error message says that you can't deploy a VM of that size in australiaeast.

I don't care what size the controller is.
I am able to manually deploy VMs in that region in Azure. So Juju should choose one of the sizes I can use in that region. (There are hundreds of options)

## Full error message

```
Creating Juju controller "azure-controller" on azure/australiaeast
Looking for packaged Juju agent version 2.5.4 for amd64
Launching controller instance(s) on azure/australiaeast...
ERROR creating instance failed, destroying: creating deployment "machine-0": resources.DeploymentsClient#CreateOrUpdate: Failure sendin
g request: StatusCode=400 -- Original Error: Code="InvalidTemplateDeployment" Message="The template deployment failed with error: 'The
resource with id: '/subscriptions/26051dd8-591a-459a-a58e-975907c8acb8/resourceGroups/juju-controller-model-0a985c83-50fb-422a-855d-26f
6790540ad/providers/Microsoft.Compute/virtualMachines/machine-0' failed validation with message: 'The requested size for resource '/sub
scriptions/26051dd8-591a-459a-a58e-975907c8acb8/resourceGroups/juju-controller-model-0a985c83-50fb-422a-855d-26f6790540ad/providers/Mic
rosoft.Compute/virtualMachines/machine-0' is currently not available in location 'australiaeast' zones '' for subscription '26051dd8-59
1a-459a-a58e-975907c8acb8'. Please try another size or deploy to a different location or zones. See https://aka.ms/azureskunotavailable
 for details.'.'."
ERROR bootstrap failed, destroying model: cannot start bootstrap instance: creating virtual machine "machine-0": creating deployment "$
achine-0": resources.DeploymentsClient#CreateOrUpdate: Failure sending request: StatusCode=400 -- Original Error: Code="InvalidTemplat$
Deployment" Message="The template deployment failed with error: 'The resource with id: '/subscriptions/26051dd8-591a-459a-a58e-975907c$
acb8/resourceGroups/juju-controller-model-0a985c83-50fb-422a-855d-26f6790540ad/providers/Microsoft.Compute/virtualMachines/machine-0' $
ailed validation with message: 'The requested size for resource '/subscriptions/26051dd8-591a-459a-a58e-975907c8acb8/resourceGroups/ju$
u-controller-model-0a985c83-50fb-422a-855d-26f6790540ad/providers/Microsoft.Compute/virtualMachines/machine-0' is currently not availa$
le in location 'australiaeast' zones '' for subscription '26051dd8-591a-459a-a58e-975907c8acb8'. Please try another size or deploy to $
 different location or zones. See https://aka.ms/azureskunotavailable for details.'.'."
ERROR failed to bootstrap model: cannot start bootstrap instance: creating virtual machine "machine-0": creating deployment "machine-0$
: resources.DeploymentsClient#CreateOrUpdate: Failure sending request: StatusCode=400 -- Original Error: Code="InvalidTemplateDeployme$
t" Message="The template deployment failed with error: 'The resource with id: '/subscriptions/26051dd8-591a-459a-a58e-975907c8acb8/res$
urceGroups/juju-controller-model-0a985c83-50fb-422a-855d-26f6790540ad/providers/Microsoft.Compute/virtualMachines/machine-0' failed va$
idation with message: 'The requested size for resource '/subscriptions/26051dd8-591a-459a-a58e-975907c8acb8/resourceGroups/juju-contro$
ler-model-0a985c83-50fb-422a-855d-26f6790540ad/providers/Microsoft.Compute/virtualMachines/machine-0' is currently not available in lo$
ation 'australiaeast' zones '' for subscription '26051dd8-591a-459a-a58e-975907c8acb8'. Please try another size or deploy to a differe$
t location or zones. See https://aka.ms/azureskunotavailable for details.'.'."

```

[Joseph Phillips (manadart)]

Might this be a limit based on your account?

I was able to bootstrap to "australiaeast" without issue.

Juju has default controller constraints for memory (3.5GiB on Azure), but any specification of constraints for "instance-type", "mem", "cores" or "cpu-power" will override it.

If you know the instance type you want to use, you can supply:
"--bootstrap-constraints instance-type=<type>"

Or you can specify a lower memory constraint with:
"--bootstrap-constraints mem=1024M"

I will mark this as incomplete for now; we can re-open if further info is added to indicate a bug.

[Matthew Davis (mdavistelstra)]

I'm not aware of any limits on my account.

Can you tell me what azure size is used for the controller by default?
I can try to spin up a VM of that exact size in that region.

The options are: A2, D1, D1_v2, DS1, DS1_v2.

I was able to bootstrap to australiasoutheast without any extra arguments.

[Launchpad Janitor (janitor)]

[Expired for juju because there has been no activity for 60 days.]