Creating a Complex Custom Azure Role

By -
We recently had the need to create a custom role in the Azure Portal which stopped a set of administrators from creating networks or virtual machines.

This was because we are planning to share our ExpressRoute connection with their subscription and we only allow IT to add new devices to our network or domain.

Now the standard Azure RBAC roles don't do anything like this.  These roles are typically configured with only a small set of permissions.

The role needed the following setup

Allow All
Allow start, stop, deallocate VM
Deny All Compute
Deny All Network
Deny All Permissions

The following article was pretty useful in describing the process of creating the custom role.  There are a few methods, but I opted for the creation of the JSON file.

To get the actual permissions required to build the JSON file itself, we needed to run the following commands

Get-AzureRMProviderOperation Microsoft.Compute/*
Get-AzureRMProviderOperation Microsoft.Network/*

Output in Powershell

This produced a list of all of the operations which can be allowed or denied.  I needed to export this to ensure I allowed the administrators to be able to start, stop and deallocate VMs.

The following items are the permissions we want to allow the users to have.

Operation         : Microsoft.Compute/virtualMachines/read
OperationName     : Get Virtual Machine
ProviderNamespace : Microsoft Compute
ResourceName      : Virtual Machines
Description       : Get the properties of a virtual machine

Operation         : Microsoft.Compute/virtualMachines/start/action
OperationName     : Start Virtual Machine
ProviderNamespace : Microsoft Compute
ResourceName      : Virtual Machines
Description       : Starts the virtual machine

Operation         : Microsoft.Compute/virtualMachines/powerOff/action
OperationName     : Power Off Virtual Machine
ProviderNamespace : Microsoft Compute
ResourceName      : Virtual Machines
Description       : Powers off the virtual machine. Note that the virtual machine will continue to be billed.

Operation         : Microsoft.Compute/virtualMachines/restart/action
OperationName     : Restart Virtual Machine
ProviderNamespace : Microsoft Compute
ResourceName      : Virtual Machines
Description       : Restarts the virtual machine

Operation         : Microsoft.Compute/virtualMachines/deallocate/action
OperationName     : Deallocate Virtual Machine
ProviderNamespace : Microsoft Compute
ResourceName      : Virtual Machines
Description       : Powers off the virtual machine and releases the compute resources

Operation         : Microsoft.Compute/virtualMachines/instanceView/read
OperationName     : Get Virtual Machine Instance View
ProviderNamespace : Microsoft Compute
ResourceName      : Virtual Machine Instance View
Description       : Gets the detailed runtime status of the virtual machine and its resources

Operation         : Microsoft.Compute/locations/vmSizes/read
OperationName     : List Available Virtual Machine Sizes in Location
ProviderNamespace : Microsoft Compute
ResourceName      : Virtual Machine Sizes
Description       : Lists available virtual machine sizes in a location

There were a few more than originally intended e.g. Instance view, list sizes etc.  We remove these entries from the Output, filter just on Operation and copy these items into the NotActions section of the JSON file.

The next step was to create a JSON file.  The * in Actions allows all permissions and then we use the NotActions to Deny Operation permissions.
{
  "Name": "BI administrator",
  "Id": "null",
  "IsCustom": true,
  "Description": "Can do everything other than create virtual machines and manage networking.",
  "Actions": ["*"
  ],
  "NotActions": [
"Microsoft.Compute/availabilitySets/delete",
"Microsoft.Compute/availabilitySets/read",
"Microsoft.Compute/availabilitySets/vmSizes/read",
"Microsoft.Compute/availabilitySets/write",
"Microsoft.Compute/disks/beginGetAccess/action",
"Microsoft.Compute/disks/delete",
"Microsoft.Compute/disks/endGetAccess/action",
"Microsoft.Compute/disks/read",
"Microsoft.Compute/disks/write",
"Microsoft.Compute/images/delete",
"Microsoft.Compute/images/read",
"Microsoft.Compute/images/write",
"Microsoft.Compute/locations/diskOperations/read",
"Microsoft.Compute/locations/operations/read",
"Microsoft.Compute/locations/runCommands/read",
"Microsoft.Compute/locations/usages/read",
"Microsoft.Compute/operations/read",
"Microsoft.Compute/register/action",
"Microsoft.Compute/restorePointCollections/delete",
"Microsoft.Compute/restorePointCollections/read",
"Microsoft.Compute/restorePointCollections/restorePoints/delete",
"Microsoft.Compute/restorePointCollections/restorePoints/read",
"Microsoft.Compute/restorePointCollections/restorePoints/retrieveSasUris/action",
"Microsoft.Compute/restorePointCollections/restorePoints/write",
"Microsoft.Compute/restorePointCollections/write",
"Microsoft.Compute/snapshots/beginGetAccess/action",
"Microsoft.Compute/snapshots/delete",
"Microsoft.Compute/snapshots/endGetAccess/action",
"Microsoft.Compute/snapshots/read",
"Microsoft.Compute/snapshots/write",
"Microsoft.Compute/virtualMachineScaleSets/deallocate/action",
"Microsoft.Compute/virtualMachineScaleSets/delete",
"Microsoft.Compute/virtualMachineScaleSets/delete/action",
"Microsoft.Compute/virtualMachineScaleSets/extensions/delete",
"Microsoft.Compute/virtualMachineScaleSets/extensions/read",
"Microsoft.Compute/virtualMachineScaleSets/extensions/write",
"Microsoft.Compute/virtualMachineScaleSets/instanceView/read",
"Microsoft.Compute/virtualMachineScaleSets/manualUpgrade/action",
"Microsoft.Compute/virtualMachineScaleSets/powerOff/action",
"Microsoft.Compute/virtualMachineScaleSets/read",
"Microsoft.Compute/virtualMachineScaleSets/reimage/action",
"Microsoft.Compute/virtualMachineScaleSets/restart/action",
"Microsoft.Compute/virtualMachineScaleSets/rollingUpgrades/cancel/action",
"Microsoft.Compute/virtualMachineScaleSets/rollingUpgrades/read",
"Microsoft.Compute/virtualMachineScaleSets/scale/action",
"Microsoft.Compute/virtualMachineScaleSets/skus/read",
"Microsoft.Compute/virtualMachineScaleSets/start/action",
"Microsoft.Compute/virtualMachineScaleSets/virtualMachines/deallocate/action",
"Microsoft.Compute/virtualMachineScaleSets/virtualMachines/delete",
"Microsoft.Compute/virtualMachineScaleSets/virtualMachines/instanceView/read",
"Microsoft.Compute/virtualMachineScaleSets/virtualMachines/powerOff/action",
"Microsoft.Compute/virtualMachineScaleSets/virtualMachines/read",
"Microsoft.Compute/virtualMachineScaleSets/virtualMachines/reimage/action",
"Microsoft.Compute/virtualMachineScaleSets/virtualMachines/restart/action",
"Microsoft.Compute/virtualMachineScaleSets/virtualMachines/start/action",
"Microsoft.Compute/virtualMachineScaleSets/write",
"Microsoft.Compute/virtualMachines/capture/action",
"Microsoft.Compute/virtualMachines/convertToManagedDisks/action",
"Microsoft.Compute/virtualMachines/delete",
"Microsoft.Compute/virtualMachines/extensions/delete",
"Microsoft.Compute/virtualMachines/extensions/read",
"Microsoft.Compute/virtualMachines/extensions/write",
"Microsoft.Compute/virtualMachines/generalize/action",
"Microsoft.Compute/virtualMachines/performMaintenance/action",
"Microsoft.Compute/virtualMachines/redeploy/action",
"Microsoft.Compute/virtualMachines/runCommand/action",
"Microsoft.Compute/virtualMachines/write",
"Microsoft.Network/applicationGatewayAvailableWafRuleSets/read",
"Microsoft.Network/applicationGateways/backendAddressPools/join/action",
"Microsoft.Network/applicationGateways/backendhealth/action",
"Microsoft.Network/applicationGateways/delete",
"Microsoft.Network/applicationGateways/read",
"Microsoft.Network/applicationGateways/start/action",
"Microsoft.Network/applicationGateways/stop/action",
"Microsoft.Network/applicationGateways/write",
"Microsoft.Network/bgpServiceCommunities/read",
"Microsoft.Network/checkTrafficManagerNameAvailability/action",
"Microsoft.Network/connections/delete",
"Microsoft.Network/connections/read",
"Microsoft.Network/connections/sharedKey/read",
"Microsoft.Network/connections/sharedKey/write",
"Microsoft.Network/connections/vpndeviceconfigurationscript/read",
"Microsoft.Network/connections/write",
"Microsoft.Network/dnsoperationresults/read",
"Microsoft.Network/dnsoperationstatuses/read",
"Microsoft.Network/dnszones/A/delete",
"Microsoft.Network/dnszones/A/read",
"Microsoft.Network/dnszones/A/write",
"Microsoft.Network/dnszones/AAAA/delete",
"Microsoft.Network/dnszones/AAAA/read",
"Microsoft.Network/dnszones/AAAA/write",
"Microsoft.Network/dnszones/CNAME/delete",
"Microsoft.Network/dnszones/CNAME/read",
"Microsoft.Network/dnszones/CNAME/write",
"Microsoft.Network/dnszones/delete",
"Microsoft.Network/dnszones/MX/delete",
"Microsoft.Network/dnszones/MX/read",
"Microsoft.Network/dnszones/MX/write",
"Microsoft.Network/dnszones/NS/delete",
"Microsoft.Network/dnszones/NS/read",
"Microsoft.Network/dnszones/NS/write",
"Microsoft.Network/dnszones/PTR/delete",
"Microsoft.Network/dnszones/PTR/read",
"Microsoft.Network/dnszones/PTR/write",
"Microsoft.Network/dnszones/read",
"Microsoft.Network/dnszones/recordsets/read",
"Microsoft.Network/dnszones/SOA/read",
"Microsoft.Network/dnszones/SOA/write",
"Microsoft.Network/dnszones/SRV/delete",
"Microsoft.Network/dnszones/SRV/read",
"Microsoft.Network/dnszones/SRV/write",
"Microsoft.Network/dnszones/TXT/delete",
"Microsoft.Network/dnszones/TXT/read",
"Microsoft.Network/dnszones/TXT/write",
"Microsoft.Network/dnszones/write",
"Microsoft.Network/expressRouteCircuits/authorizations/delete",
"Microsoft.Network/expressRouteCircuits/authorizations/read",
"Microsoft.Network/expressRouteCircuits/authorizations/write",
"Microsoft.Network/expressRouteCircuits/delete",
"Microsoft.Network/expressRouteCircuits/peerings/arpTables/action",
"Microsoft.Network/expressRouteCircuits/peerings/delete",
"Microsoft.Network/expressRouteCircuits/peerings/read",
"Microsoft.Network/expressRouteCircuits/peerings/routeTables/action",
"Microsoft.Network/expressRouteCircuits/peerings/routeTablesSummary/action",
"Microsoft.Network/expressRouteCircuits/peerings/stats/read",
"Microsoft.Network/expressRouteCircuits/peerings/write",
"Microsoft.Network/expressRouteCircuits/read",
"Microsoft.Network/expressRouteCircuits/stats/read",
"Microsoft.Network/expressRouteCircuits/write",
"Microsoft.Network/expressRouteServiceProviders/read",
"Microsoft.Network/loadBalancers/backendAddressPools/join/action",
"Microsoft.Network/loadBalancers/backendAddressPools/read",
"Microsoft.Network/loadBalancers/delete",
"Microsoft.Network/loadBalancers/frontendIPConfigurations/read",
"Microsoft.Network/loadBalancers/inboundNatPools/join/action",
"Microsoft.Network/loadBalancers/inboundNatPools/read",
"Microsoft.Network/loadBalancers/inboundNatRules/delete",
"Microsoft.Network/loadBalancers/inboundNatRules/join/action",
"Microsoft.Network/loadBalancers/inboundNatRules/read",
"Microsoft.Network/loadBalancers/inboundNatRules/write",
"Microsoft.Network/loadBalancers/loadBalancingRules/read",
"Microsoft.Network/loadBalancers/networkInterfaces/read",
"Microsoft.Network/loadBalancers/outboundNatRules/read",
"Microsoft.Network/loadBalancers/probes/read",
"Microsoft.Network/loadBalancers/read",
"Microsoft.Network/loadBalancers/virtualMachines/read",
"Microsoft.Network/loadBalancers/write",
"Microsoft.Network/localnetworkgateways/delete",
"Microsoft.Network/localnetworkgateways/read",
"Microsoft.Network/localnetworkgateways/write",
"Microsoft.Network/locations/checkDnsNameAvailability/read",
"Microsoft.Network/locations/operationResults/read",
"Microsoft.Network/locations/operations/read",
"Microsoft.Network/locations/privateAccessServices/read",
"Microsoft.Network/locations/usages/read",
"Microsoft.Network/networkInterfaces/delete",
"Microsoft.Network/networkInterfaces/effectiveNetworkSecurityGroups/action",
"Microsoft.Network/networkInterfaces/effectiveRouteTable/action",
"Microsoft.Network/networkInterfaces/ipconfigurations/read",
"Microsoft.Network/networkInterfaces/join/action",
"Microsoft.Network/networkInterfaces/loadBalancers/read",
"Microsoft.Network/networkInterfaces/read",
"Microsoft.Network/networkInterfaces/write",
"Microsoft.Network/networkSecurityGroups/defaultSecurityRules/read",
"Microsoft.Network/networkSecurityGroups/delete",
"Microsoft.Network/networkSecurityGroups/join/action",
"Microsoft.Network/networkSecurityGroups/read",
"Microsoft.Network/networkSecurityGroups/securityRules/delete",
"Microsoft.Network/networkSecurityGroups/securityRules/read",
"Microsoft.Network/networkSecurityGroups/securityRules/write",
"Microsoft.Network/networkSecurityGroups/write",
"Microsoft.Network/networkWatchers/configureFlowLog/action",
"Microsoft.Network/networkWatchers/delete",
"Microsoft.Network/networkWatchers/ipFlowVerify/action",
"Microsoft.Network/networkWatchers/nextHop/action",
"Microsoft.Network/networkWatchers/packetCaptures/delete",
"Microsoft.Network/networkWatchers/packetCaptures/queryStatus/action",
"Microsoft.Network/networkWatchers/packetCaptures/read",
"Microsoft.Network/networkWatchers/packetCaptures/stop/action",
"Microsoft.Network/networkWatchers/packetCaptures/write",
"Microsoft.Network/networkWatchers/queryFlowLogStatus/action",
"Microsoft.Network/networkWatchers/queryTroubleshootResult/action",
"Microsoft.Network/networkWatchers/read",
"Microsoft.Network/networkWatchers/securityGroupView/action",
"Microsoft.Network/networkWatchers/topology/action",
"Microsoft.Network/networkWatchers/troubleshoot/action",
"Microsoft.Network/networkWatchers/write",
"Microsoft.Network/operations/read",
"Microsoft.Network/publicIPAddresses/delete",
"Microsoft.Network/publicIPAddresses/join/action",
"Microsoft.Network/publicIPAddresses/read",
"Microsoft.Network/publicIPAddresses/write",
"Microsoft.Network/register/action",
"Microsoft.Network/routeFilters/delete",
"Microsoft.Network/routeFilters/join/action",
"Microsoft.Network/routeFilters/read",
"Microsoft.Network/routeFilters/rules/delete",
"Microsoft.Network/routeFilters/rules/read",
"Microsoft.Network/routeFilters/rules/write",
"Microsoft.Network/routeFilters/write",
"Microsoft.Network/routeTables/delete",
"Microsoft.Network/routeTables/join/action",
"Microsoft.Network/routeTables/read",
"Microsoft.Network/routeTables/routes/delete",
"Microsoft.Network/routeTables/routes/read",
"Microsoft.Network/routeTables/routes/write",
"Microsoft.Network/routeTables/write",
"Microsoft.Network/trafficManagerGeographicHierarchies/read",
"Microsoft.Network/trafficManagerProfiles/azureEndpoints/delete",
"Microsoft.Network/trafficManagerProfiles/azureEndpoints/read",
"Microsoft.Network/trafficManagerProfiles/azureEndpoints/write",
"Microsoft.Network/trafficManagerProfiles/delete",
"Microsoft.Network/trafficManagerProfiles/externalEndpoints/delete",
"Microsoft.Network/trafficManagerProfiles/externalEndpoints/read",
"Microsoft.Network/trafficManagerProfiles/externalEndpoints/write",
"Microsoft.Network/trafficManagerProfiles/nestedEndpoints/delete",
"Microsoft.Network/trafficManagerProfiles/nestedEndpoints/read",
"Microsoft.Network/trafficManagerProfiles/nestedEndpoints/write",
"Microsoft.Network/trafficManagerProfiles/read",
"Microsoft.Network/trafficManagerProfiles/write",
"Microsoft.Network/unregister/action",
"Microsoft.Network/virtualnetworkgateways/supportedvpndevices/read",
"Microsoft.Network/virtualNetworks/checkIpAddressAvailability/read",
"Microsoft.Network/virtualNetworks/delete",
"Microsoft.Network/virtualNetworks/peer/action",
"Microsoft.Network/virtualNetworks/read",
"Microsoft.Network/virtualNetworks/subnets/delete",
"Microsoft.Network/virtualNetworks/subnets/join/action",
"Microsoft.Network/virtualNetworks/subnets/joinPrivateAccessService/action",
"Microsoft.Network/virtualNetworks/subnets/joinViaServiceTunnel/action",
"Microsoft.Network/virtualNetworks/subnets/read",
"Microsoft.Network/virtualNetworks/subnets/virtualMachines/read",
"Microsoft.Network/virtualNetworks/subnets/write",
"Microsoft.Network/virtualNetworks/virtualMachines/read",
"Microsoft.Network/virtualNetworks/virtualNetworkPeerings/delete",
"Microsoft.Network/virtualNetworks/virtualNetworkPeerings/read",
"Microsoft.Network/virtualNetworks/virtualNetworkPeerings/write",
"Microsoft.Network/virtualNetworks/write",
"Microsoft.Authorization/*/Delete", 
"Microsoft.Authorization/*/Write",
"Microsoft.Authorization/elevateAccess/Action"
 ],
  "AssignableScopes": [
    "/subscriptions/123456789-1234-1234-1234-123456789123",
  ]
}

You will notice the last three entries

"Microsoft.Authorization/*/Delete", 
"Microsoft.Authorization/*/Write",
"Microsoft.Authorization/elevateAccess/Action"

These will stop the administrator being able to change the permissions for themselves.  Clearly if I missed this, the whole exercise would be pointless!

If you want to use this JSON file, you will just need to replace the name, description and the subscription ID.

You will then need to create a new Role from the JSON file.  This article has more detail on how to do this, but the PowerShell command you will need to run is
New-AzureRmRoleDefinition -InputFile "C:\CustomRoles\customrole1.json"

Role in Azure Portal
And there you have it!  A custom Azure Role that can do nearly everything other than VMs, network and permissions.

Comments

Post a Comment

Popular posts from this blog

Assigning Windows 10/11 Enterprise Subscription Activation Licences to Hybrid Azure AD Joined Devices

By -
Image
Introduction Starting with Windows 10, version 1703, Windows 10 Pro supports the Subscription Activation feature, enabling users to “step-up” from Windows 10 Pro to Windows 10 Enterprise automatically if they are subscribed to Windows 10 Enterprise E3 or E5. The Subscription Activation feature eliminates the need to manually deploy Windows 10 Enterprise or Education images on each target device, then later standing up on-prem key management services such as KMS or MAK based activation, entering GVLKs, and subsequently rebooting client devices. It’s important to note that the Windows 10 Enterprise subscription activation is designed to “step-up” a device from Windows 10 Pro to Windows 10 Enterprise. Therefore, your device is required to have a Windows 10 Pro license activated as a baseline. For Windows 10 Enterprise Subscription Activation to function, there a several prerequisites which need to be in place. This blog is aimed for organisations which have Active Directory on premises an
Read more

Autopilot Hybrid Azure AD Join with Customised First Login Status

By -
Image
Introduction This is my flavour of deploying a customised HAADJ progress status, building on work by Joymalya Basu Roy's detailed article - https://joymalya.com/autopilot-hybrid-azure-ad-join-reworked-with-joy/ . The differences in my version are: Not using Active Setup to run the HAADJ retry process or Splash Screen as I found this didn't work as expected and I didn't want to add a registry item to affect all future logins with a reboot from the HAADJ process. Running the processes under the context of the SYSTEM account, but displaying status to the interactive user. Avoid the HAADJ process running again after the initial success. This provides a customised first login status which prevents the user from using the devices until Hybrid Azure AD Join from the Autopilot process. It's use is primarily for when the User ESP is configured to be skipped. Files This is my version of customised HAADJ which is built on work and guidance in blogs/articles from Michael Niehaus, S
Read more

Upgrade Samsung Galaxy Ace 2 (I8160) to Android Jelly Bean

By -
Image
There has been talk of Samsung working on an Android build of Jelly Bean for the Samsung Galaxy Ace 2 (I8160) for quite some time. A couple of leaked versions of the build have been available since the end of February and during March, but these contained various bugs as you might expect. On April 2nd, an official release was available on www.sammobile.com and available for install using KIES or OTA, but only for Portuguese customers on the TMN network.  This was curious as this network didn't actually sell the phone.  It could be a way of getting the early adopters to test this version before the big operators like Telefonica and Vodafone build and release a version themselves. There are many online guides on how to manually download the firmware and apply it to your device, but if you make the direct jump from Gingerbread (2.3) to Jelly Bean (4.1.2) you will likely have RAM issues. The gingerbread versions only allocated around 500MB for RAM whereas Jelly Bean needs more
Read more