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Private AML: Dockerfile with Nexus config #3424

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@damoodamoo damoodamoo commented Apr 6, 2023

Resolves #3295

As AML is deployed, it deploys a container registry for its own use. We need to push a customised Docker image into that registry, that contains the nexus config 'baked in', so that nexus will be used to download required packages during AML image builds during training / experimentation runs. Without the nexus config, the compute cluster can not run in network isolation.

What this PR does:

  • As the container registry is deployed, it leaves the network open.
  • An ACR task is used to build + push the nexus docker image
  • The terraform for AML is re-run, and the network is closed.

Alternatives considered and discounted:

  • Build a Docker image in the VMSS runner, and push from there. We don't want docker-in-docker.
  • Cannot use an ACR task as-is because the general use agent pools don't have network access to the ACR
  • Instead of opening the network temporarily, use a custom ACR Task Agent Pool, within the ACR VNet, to run the task. The pools are not available in the UK, and have to be in the same region as the ACR.
  • Add an IP exception to the ACR for the public agent pool. We don't know the IP of the runner until it's running, and then it's too late.

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Unit Test Results

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Results for commit a8dfe47.

♻️ This comment has been updated with latest results.

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Looks good and makes sense - shame this workaround is needed but seems you've considered every possible alternative!


ARG TRE_ID
ARG TRE_LOCATION
ENV NEXUS_PROXY_URL="https://nexus-${TRE_ID}.${TRE_LOCATION}.cloudapp.azure.com"
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is this going to need to be updated as per the Gov cloud stuff?

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yep - have updated to set the endpoint based on cloud type

resource "azurerm_container_registry" "acr" {
name = local.acr_name
location = data.azurerm_resource_group.ws.location
resource_group_name = data.azurerm_resource_group.ws.name
sku = "Premium"
admin_enabled = false
public_network_access_enabled = false
public_network_access_enabled = var.public_access_enabled
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as discussed, I suspect this might benefit from a comment

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agreed - have added comment to explain

@damoodamoo damoodamoo added the blocked Cannot progress at present label Apr 6, 2023
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Holding off until @tamirkamara / the crew are back from leave to review from a Gov perspective

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Tagging @LizaShak for a review as well.

@@ -55,3 +63,7 @@ output "mcr_tag" {
output "batch_tag" {
value = data.azurerm_network_service_tags.batch_tag.id
}

output "azure_endpoint" {
value = var.azure_environment == "AzureGovCloud" ? "cloudapp.usgovcloudapi.net" : "cloudapp.azure.com"
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  1. We have a similar condition somewhere else already... but at any case, the suffixes should be brought from TF configuration module we use elsewhere (we might need to add those as outputs there).
  2. If we need to have this condition in the definition, then I think we'd prefer to use arm_environment as that is native to Terraform.

@marrobi marrobi added the enhancement New feature or request label Jun 27, 2023
@tim-allen-ck tim-allen-ck removed the blocked Cannot progress at present label May 9, 2024
@tim-allen-ck tim-allen-ck self-assigned this May 9, 2024
@tim-allen-ck tim-allen-ck marked this pull request as draft August 8, 2024 11:17
@tim-allen-ck tim-allen-ck removed their assignment Aug 8, 2024
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AML Compute does not build when private in the workspace
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