azureblog.co.uk
← cd ~/roles
// roles/azure · containers

Azure Arc Kubernetes WriterAzure built-in role

Lets you update everything in cluster/namespace, except (cluster)roles and (cluster)role bindings.

Role ID5b999177-9696-4545-85c7-50de3797e5a1
CategoryContainers
Actions7
Data actions29

Before you assign it

  • It reaches the data, not just the resource. It has 29 data actions, such as reading blobs, secrets or messages.

What it can do

PermissionWhat it allows
Microsoft.Authorization/*/readAny read operation on anything under Microsoft.Authorization
Microsoft.Insights/alertRules/*Every operation under Microsoft.Insights/alertRules
Microsoft.Resources/deployments/writeCreates or updates an deployment.
Microsoft.Resources/subscriptions/operationresults/readGet the subscription operation results.
Microsoft.Resources/subscriptions/readGets the list of subscriptions.
Microsoft.Resources/subscriptions/resourceGroups/readGets or lists resource groups.
Microsoft.Support/*Every operation under Microsoft.Support

Data actions

PermissionWhat it allows
Microsoft.Kubernetes/connectedClusters/apps/controllerrevisions/readReads controllerrevisions
Microsoft.Kubernetes/connectedClusters/apps/daemonsets/*Every operation under Microsoft.Kubernetes/connectedClusters/apps/daemonsets
Microsoft.Kubernetes/connectedClusters/apps/deployments/*Every operation under Microsoft.Kubernetes/connectedClusters/apps/deployments
Microsoft.Kubernetes/connectedClusters/apps/replicasets/*Every operation under Microsoft.Kubernetes/connectedClusters/apps/replicasets
Microsoft.Kubernetes/connectedClusters/apps/statefulsets/*Every operation under Microsoft.Kubernetes/connectedClusters/apps/statefulsets
Microsoft.Kubernetes/connectedClusters/autoscaling/horizontalpodautoscalers/*Every operation under Microsoft.Kubernetes/connectedClusters/autoscaling/horizontalpodautoscalers
Microsoft.Kubernetes/connectedClusters/batch/cronjobs/*Every operation under Microsoft.Kubernetes/connectedClusters/batch/cronjobs
Microsoft.Kubernetes/connectedClusters/batch/jobs/*Every operation under Microsoft.Kubernetes/connectedClusters/batch/jobs
Microsoft.Kubernetes/connectedClusters/configmaps/*Every operation under Microsoft.Kubernetes/connectedClusters/configmaps
Microsoft.Kubernetes/connectedClusters/endpoints/*Every operation under Microsoft.Kubernetes/connectedClusters/endpoints
Microsoft.Kubernetes/connectedClusters/events.k8s.io/events/readReads events
Microsoft.Kubernetes/connectedClusters/events/readReads events
Microsoft.Kubernetes/connectedClusters/extensions/daemonsets/*Every operation under Microsoft.Kubernetes/connectedClusters/extensions/daemonsets
Microsoft.Kubernetes/connectedClusters/extensions/deployments/*Every operation under Microsoft.Kubernetes/connectedClusters/extensions/deployments
Microsoft.Kubernetes/connectedClusters/extensions/ingresses/*Every operation under Microsoft.Kubernetes/connectedClusters/extensions/ingresses
Microsoft.Kubernetes/connectedClusters/extensions/networkpolicies/*Every operation under Microsoft.Kubernetes/connectedClusters/extensions/networkpolicies
Microsoft.Kubernetes/connectedClusters/extensions/replicasets/*Every operation under Microsoft.Kubernetes/connectedClusters/extensions/replicasets
Microsoft.Kubernetes/connectedClusters/limitranges/readReads limitranges
Microsoft.Kubernetes/connectedClusters/namespaces/readReads namespaces
Microsoft.Kubernetes/connectedClusters/networking.k8s.io/ingresses/*Every operation under Microsoft.Kubernetes/connectedClusters/networking.k8s.io/ingresses
Microsoft.Kubernetes/connectedClusters/networking.k8s.io/networkpolicies/*Every operation under Microsoft.Kubernetes/connectedClusters/networking.k8s.io/networkpolicies
Microsoft.Kubernetes/connectedClusters/persistentvolumeclaims/*Every operation under Microsoft.Kubernetes/connectedClusters/persistentvolumeclaims
Microsoft.Kubernetes/connectedClusters/pods/*Every operation under Microsoft.Kubernetes/connectedClusters/pods
Microsoft.Kubernetes/connectedClusters/policy/poddisruptionbudgets/*Every operation under Microsoft.Kubernetes/connectedClusters/policy/poddisruptionbudgets
Microsoft.Kubernetes/connectedClusters/replicationcontrollers/*Every operation under Microsoft.Kubernetes/connectedClusters/replicationcontrollers
Microsoft.Kubernetes/connectedClusters/resourcequotas/readReads resourcequotas
Microsoft.Kubernetes/connectedClusters/secrets/*Every operation under Microsoft.Kubernetes/connectedClusters/secrets
Microsoft.Kubernetes/connectedClusters/serviceaccounts/*Every operation under Microsoft.Kubernetes/connectedClusters/serviceaccounts
Microsoft.Kubernetes/connectedClusters/services/*Every operation under Microsoft.Kubernetes/connectedClusters/services

Assign it

Scope it as tightly as you can: a resource or resource group rather than the whole subscription.

azure cli
az role assignment create \
  --assignee "jane.doe@contoso.com" \
  --role "Azure Arc Kubernetes Writer" \
  --scope "/subscriptions/<subscription id>/resourceGroups/<resource group>"
powershell3 lines
New-AzRoleAssignment -SignInName "jane.doe@contoso.com" `
  -RoleDefinitionName "Azure Arc Kubernetes Writer" `
  -Scope "/subscriptions/<subscription id>/resourceGroups/<resource group>"
bicep7 lines
resource assignment 'Microsoft.Authorization/roleAssignments@2022-04-01' = {
  name: guid(resourceGroup().id, principalId, '5b999177-9696-4545-85c7-50de3797e5a1')
  properties: {
    roleDefinitionId: subscriptionResourceId('Microsoft.Authorization/roleDefinitions', '5b999177-9696-4545-85c7-50de3797e5a1')
    principalId: principalId
  }
}

Who already has it?

kql · azure resource graph
authorizationresources
| where type == "microsoft.authorization/roleassignments"
| where tostring(properties.roleDefinitionId) endswith "5b999177-9696-4545-85c7-50de3797e5a1"
| project principalId = tostring(properties.principalId), principalType = tostring(properties.principalType), scope = tostring(properties.scope)

Other containers roles

Find the smallest role for a task →

Sources