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Agent Pools - Get

  • Reference
Service:
AKS
API Version:
2024-08-01

Gets the specified managed cluster agent pool.

GET https://management.azure.com/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.ContainerService/managedClusters/{resourceName}/agentPools/{agentPoolName}?api-version=2024-08-01

URI Parameters

Name In Required Type Description
agentPoolName
 path True

string

The name of the agent pool.

Regex pattern: ^[a-z][a-z0-9]{0,11}$
resourceGroupName
 path True

string

The name of the resource group. The name is case insensitive.
resourceName
 path True

string

The name of the managed cluster resource.

Regex pattern: ^[a-zA-Z0-9]$|^[a-zA-Z0-9][-_a-zA-Z0-9]{0,61}[a-zA-Z0-9]$
subscriptionId
 path True

string

uuid

The ID of the target subscription. The value must be an UUID.
api-version
 query True

string

The API version to use for this operation.

Responses

Name Type Description
200 OK

AgentPool

OK
Other Status Codes

CloudError

Error response describing why the operation failed.

Security

azure_auth

Azure Active Directory OAuth2 Flow

Type: oauth2
Flow: implicit
Authorization URL: https://login.microsoftonline.com/common/oauth2/authorize

Scopes

Name Description
user_impersonation impersonate your user account

Examples

Get Agent Pool

Sample request

GET https://management.azure.com/subscriptions/00000000-0000-0000-0000-000000000000/resourceGroups/rg1/providers/Microsoft.ContainerService/managedClusters/clustername1/agentPools/agentpool1?api-version=2024-08-01

Sample response

Status code:
200 
{
  "id": "/subscriptions/00000000-0000-0000-0000-000000000000/resourcegroups/rg1/providers/Microsoft.ContainerService/managedClusters/clustername1/agentPools/agentpool1",
  "name": "agentpool1",
  "properties": {
    "provisioningState": "Succeeded",
    "count": 3,
    "vmSize": "Standard_DS1_v2",
    "maxPods": 110,
    "osType": "Linux",
    "orchestratorVersion": "1.9.6",
    "currentOrchestratorVersion": "1.9.6",
    "nodeImageVersion": "AKSUbuntu:1604:2020.03.11",
    "upgradeSettings": {
      "maxSurge": "33%"
    }
  }
}

Definitions

Name Description
AgentPool

Agent Pool.
AgentPoolMode

The mode of an agent pool.
AgentPoolNetworkProfile

Network settings of an agent pool.
AgentPoolSecurityProfile

The security settings of an agent pool.
AgentPoolType

The type of Agent Pool.
AgentPoolUpgradeSettings

Settings for upgrading an agentpool
AgentPoolWindowsProfile

The Windows agent pool's specific profile.
CloudError

An error response from the Container service.
CloudErrorBody

An error response from the Container service.
code

Tells whether the cluster is Running or Stopped
CreationData

Data used when creating a target resource from a source resource.
GPUInstanceProfile

GPUInstanceProfile to be used to specify GPU MIG instance profile for supported GPU VM SKU.
IPTag

Contains the IPTag associated with the object.
KubeletConfig

Kubelet configurations of agent nodes.
KubeletDiskType

Determines the placement of emptyDir volumes, container runtime data root, and Kubelet ephemeral storage.
LinuxOSConfig

OS configurations of Linux agent nodes.
OSDiskType

The OS disk type to be used for machines in the agent pool.
OSSKU

Specifies the OS SKU used by the agent pool. The default is Ubuntu if OSType is Linux. The default is Windows2019 when Kubernetes <= 1.24 or Windows2022 when Kubernetes >= 1.25 if OSType is Windows.
OSType

The operating system type. The default is Linux.
PortRange

The port range.
PowerState

Describes the Power State of the cluster
Protocol

The network protocol of the port.
ScaleDownMode

Describes how VMs are added to or removed from Agent Pools. See billing states.
ScaleSetEvictionPolicy

The Virtual Machine Scale Set eviction policy.
ScaleSetPriority

The Virtual Machine Scale Set priority.
SysctlConfig

Sysctl settings for Linux agent nodes.
WorkloadRuntime

Determines the type of workload a node can run.

AgentPool

Agent Pool.

Name Type Default value Description
id

string

Resource ID.
name

string

The name of the resource that is unique within a resource group. This name can be used to access the resource.
properties.availabilityZones

string[]

The list of Availability zones to use for nodes. This can only be specified if the AgentPoolType property is 'VirtualMachineScaleSets'.
properties.capacityReservationGroupID

string

The fully qualified resource ID of the Capacity Reservation Group to provide virtual machines from a reserved group of Virtual Machines.
AKS will associate the specified agent pool with the Capacity Reservation Group.
properties.count

integer

Number of agents (VMs) to host docker containers. Allowed values must be in the range of 0 to 1000 (inclusive) for user pools and in the range of 1 to 1000 (inclusive) for system pools. The default value is 1.
properties.creationData

CreationData

CreationData to be used to specify the source Snapshot ID if the node pool will be created/upgraded using a snapshot.
properties.currentOrchestratorVersion

string

The version of Kubernetes the Agent Pool is running.
If orchestratorVersion is a fully specified version <major.minor.patch>, this field will be exactly equal to it. If orchestratorVersion is <major.minor>, this field will contain the full <major.minor.patch> version being used.
properties.enableAutoScaling

boolean

Whether to enable auto-scaler
properties.enableEncryptionAtHost

boolean

Whether to enable host based OS and data drive encryption.
This is only supported on certain VM sizes and in certain Azure regions. For more information, see: https://docs.microsoft.com/azure/aks/enable-host-encryption
properties.enableFIPS

boolean

Whether to use a FIPS-enabled OS.
See Add a FIPS-enabled node pool for more details.
properties.enableNodePublicIP

boolean

Whether each node is allocated its own public IP.
Some scenarios may require nodes in a node pool to receive their own dedicated public IP addresses. A common scenario is for gaming workloads, where a console needs to make a direct connection to a cloud virtual machine to minimize hops. For more information see assigning a public IP per node. The default is false.
properties.enableUltraSSD

boolean

Whether to enable UltraSSD
properties.gpuInstanceProfile

GPUInstanceProfile

GPUInstanceProfile to be used to specify GPU MIG instance profile for supported GPU VM SKU.
properties.hostGroupID

string

The fully qualified resource ID of the Dedicated Host Group to provision virtual machines from, used only in creation scenario and not allowed to changed once set.
This is of the form: /subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Compute/hostGroups/{hostGroupName}. For more information see Azure dedicated hosts.
properties.kubeletConfig

KubeletConfig

Kubelet configurations of agent nodes.
The Kubelet configuration on the agent pool nodes.
properties.kubeletDiskType

KubeletDiskType

Determines the placement of emptyDir volumes, container runtime data root, and Kubelet ephemeral storage.
properties.linuxOSConfig

LinuxOSConfig

OS configurations of Linux agent nodes.
The OS configuration of Linux agent nodes.
properties.maxCount

integer

The maximum number of nodes for auto-scaling
properties.maxPods

integer

The maximum number of pods that can run on a node.
properties.minCount

integer

The minimum number of nodes for auto-scaling
properties.mode

AgentPoolMode

The mode of an agent pool.
A cluster must have at least one 'System' Agent Pool at all times. For additional information on agent pool restrictions and best practices, see: https://docs.microsoft.com/azure/aks/use-system-pools
properties.networkProfile

AgentPoolNetworkProfile

Network-related settings of an agent pool.
properties.nodeImageVersion

string

The version of node image
properties.nodeLabels

object

The node labels to be persisted across all nodes in agent pool.
properties.nodePublicIPPrefixID

string

The public IP prefix ID which VM nodes should use IPs from.
This is of the form: /subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Network/publicIPPrefixes/{publicIPPrefixName}
properties.nodeTaints

string[]

The taints added to new nodes during node pool create and scale. For example, key=value:NoSchedule.
properties.orchestratorVersion

string

The version of Kubernetes specified by the user.
Both patch version <major.minor.patch> (e.g. 1.20.13) and <major.minor> (e.g. 1.20) are supported. When <major.minor> is specified, the latest supported GA patch version is chosen automatically. Updating the cluster with the same <major.minor> once it has been created (e.g. 1.14.x -> 1.14) will not trigger an upgrade, even if a newer patch version is available. As a best practice, you should upgrade all node pools in an AKS cluster to the same Kubernetes version. The node pool version must have the same major version as the control plane. The node pool minor version must be within two minor versions of the control plane version. The node pool version cannot be greater than the control plane version. For more information see upgrading a node pool.
properties.osDiskSizeGB

integer

OS Disk Size in GB to be used to specify the disk size for every machine in the master/agent pool. If you specify 0, it will apply the default osDisk size according to the vmSize specified.
properties.osDiskType

OSDiskType

The OS disk type to be used for machines in the agent pool.
The default is 'Ephemeral' if the VM supports it and has a cache disk larger than the requested OSDiskSizeGB. Otherwise, defaults to 'Managed'. May not be changed after creation. For more information see Ephemeral OS.
properties.osSKU

OSSKU

Specifies the OS SKU used by the agent pool. The default is Ubuntu if OSType is Linux. The default is Windows2019 when Kubernetes <= 1.24 or Windows2022 when Kubernetes >= 1.25 if OSType is Windows.
properties.osType

OSType

Linux

The operating system type. The default is Linux.
properties.podSubnetID

string

The ID of the subnet which pods will join when launched.
If omitted, pod IPs are statically assigned on the node subnet (see vnetSubnetID for more details). This is of the form: /subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Network/virtualNetworks/{virtualNetworkName}/subnets/{subnetName}
properties.powerState

PowerState

Whether the Agent Pool is running or stopped.
When an Agent Pool is first created it is initially Running. The Agent Pool can be stopped by setting this field to Stopped. A stopped Agent Pool stops all of its VMs and does not accrue billing charges. An Agent Pool can only be stopped if it is Running and provisioning state is Succeeded
properties.provisioningState

string

The current deployment or provisioning state.
properties.proximityPlacementGroupID

string

The ID for Proximity Placement Group.
properties.scaleDownMode

ScaleDownMode

The scale down mode to use when scaling the Agent Pool.
This also effects the cluster autoscaler behavior. If not specified, it defaults to Delete.
properties.scaleSetEvictionPolicy

ScaleSetEvictionPolicy

Delete

The Virtual Machine Scale Set eviction policy to use.
This cannot be specified unless the scaleSetPriority is 'Spot'. If not specified, the default is 'Delete'.
properties.scaleSetPriority

ScaleSetPriority

Regular

The Virtual Machine Scale Set priority. If not specified, the default is 'Regular'.
properties.securityProfile

AgentPoolSecurityProfile

The security settings of an agent pool.
properties.spotMaxPrice

number

-1

The max price (in US Dollars) you are willing to pay for spot instances. Possible values are any decimal value greater than zero or -1 which indicates default price to be up-to on-demand.
Possible values are any decimal value greater than zero or -1 which indicates the willingness to pay any on-demand price. For more details on spot pricing, see spot VMs pricing
properties.tags

object

The tags to be persisted on the agent pool virtual machine scale set.
properties.type

AgentPoolType

The type of Agent Pool.
properties.upgradeSettings

AgentPoolUpgradeSettings

Settings for upgrading the agentpool
properties.vmSize

string

The size of the agent pool VMs.
VM size availability varies by region. If a node contains insufficient compute resources (memory, cpu, etc) pods might fail to run correctly. For more details on restricted VM sizes, see: https://docs.microsoft.com/azure/aks/quotas-skus-regions
properties.vnetSubnetID

string

The ID of the subnet which agent pool nodes and optionally pods will join on startup.
If this is not specified, a VNET and subnet will be generated and used. If no podSubnetID is specified, this applies to nodes and pods, otherwise it applies to just nodes. This is of the form: /subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Network/virtualNetworks/{virtualNetworkName}/subnets/{subnetName}
properties.windowsProfile

AgentPoolWindowsProfile

The Windows agent pool's specific profile.
properties.workloadRuntime

WorkloadRuntime

Determines the type of workload a node can run.
type

string

Resource type

AgentPoolMode

The mode of an agent pool.

Name Type Description
System

string

System agent pools are primarily for hosting critical system pods such as CoreDNS and metrics-server. System agent pools osType must be Linux. System agent pools VM SKU must have at least 2vCPUs and 4GB of memory.
User

string

User agent pools are primarily for hosting your application pods.

AgentPoolNetworkProfile

Network settings of an agent pool.

Name Type Description
allowedHostPorts

PortRange[]

The port ranges that are allowed to access. The specified ranges are allowed to overlap.
applicationSecurityGroups

string[]

The IDs of the application security groups which agent pool will associate when created.
nodePublicIPTags

IPTag[]

IPTags of instance-level public IPs.

AgentPoolSecurityProfile

The security settings of an agent pool.

Name Type Description
enableSecureBoot

boolean

Secure Boot is a feature of Trusted Launch which ensures that only signed operating systems and drivers can boot. For more details, see aka.ms/aks/trustedlaunch. If not specified, the default is false.
enableVTPM

boolean

vTPM is a Trusted Launch feature for configuring a dedicated secure vault for keys and measurements held locally on the node. For more details, see aka.ms/aks/trustedlaunch. If not specified, the default is false.

AgentPoolType

The type of Agent Pool.

Name Type Description
AvailabilitySet

string

Use of this is strongly discouraged.
VirtualMachineScaleSets

string

Create an Agent Pool backed by a Virtual Machine Scale Set.

AgentPoolUpgradeSettings

Settings for upgrading an agentpool

Name Type Description
drainTimeoutInMinutes

integer

The drain timeout for a node
The amount of time (in minutes) to wait on eviction of pods and graceful termination per node. This eviction wait time honors waiting on pod disruption budgets. If this time is exceeded, the upgrade fails. If not specified, the default is 30 minutes.
maxSurge

string

The maximum number or percentage of nodes that are surged during upgrade.
This can either be set to an integer (e.g. '5') or a percentage (e.g. '50%'). If a percentage is specified, it is the percentage of the total agent pool size at the time of the upgrade. For percentages, fractional nodes are rounded up. If not specified, the default is 1. For more information, including best practices, see: https://docs.microsoft.com/azure/aks/upgrade-cluster#customize-node-surge-upgrade
nodeSoakDurationInMinutes

integer

The soak duration for a node
The amount of time (in minutes) to wait after draining a node and before reimaging it and moving on to next node. If not specified, the default is 0 minutes.

AgentPoolWindowsProfile

The Windows agent pool's specific profile.

Name Type Description
disableOutboundNat

boolean

Whether to disable OutboundNAT in windows nodes
The default value is false. Outbound NAT can only be disabled if the cluster outboundType is NAT Gateway and the Windows agent pool does not have node public IP enabled.

CloudError

An error response from the Container service.

Name Type Description
error

CloudErrorBody

Details about the error.

CloudErrorBody

An error response from the Container service.

Name Type Description
code

string

An identifier for the error. Codes are invariant and are intended to be consumed programmatically.
details

CloudErrorBody[]

A list of additional details about the error.
message

string

A message describing the error, intended to be suitable for display in a user interface.
target

string

The target of the particular error. For example, the name of the property in error.

code

Tells whether the cluster is Running or Stopped

Name Type Description
Running

string

The cluster is running.
Stopped

string

The cluster is stopped.

CreationData

Data used when creating a target resource from a source resource.

Name Type Description
sourceResourceId

string

This is the ARM ID of the source object to be used to create the target object.

GPUInstanceProfile

GPUInstanceProfile to be used to specify GPU MIG instance profile for supported GPU VM SKU.

Name Type Description
MIG1g

string

MIG2g

string

MIG3g

string

MIG4g

string

MIG7g

string

IPTag

Contains the IPTag associated with the object.

Name Type Description
ipTagType

string

The IP tag type. Example: RoutingPreference.
tag

string

The value of the IP tag associated with the public IP. Example: Internet.

KubeletConfig

Kubelet configurations of agent nodes.

Name Type Description
allowedUnsafeSysctls

string[]

Allowed list of unsafe sysctls or unsafe sysctl patterns (ending in *).
containerLogMaxFiles

integer

The maximum number of container log files that can be present for a container. The number must be ≥ 2.
containerLogMaxSizeMB

integer

The maximum size (e.g. 10Mi) of container log file before it is rotated.
cpuCfsQuota

boolean

If CPU CFS quota enforcement is enabled for containers that specify CPU limits.
The default is true.
cpuCfsQuotaPeriod

string

The CPU CFS quota period value.
The default is '100ms.' Valid values are a sequence of decimal numbers with an optional fraction and a unit suffix. For example: '300ms', '2h45m'. Supported units are 'ns', 'us', 'ms', 's', 'm', and 'h'.
cpuManagerPolicy

string

The CPU Manager policy to use.
The default is 'none'. See Kubernetes CPU management policies for more information. Allowed values are 'none' and 'static'.
failSwapOn

boolean

If set to true it will make the Kubelet fail to start if swap is enabled on the node.
imageGcHighThreshold

integer

The percent of disk usage after which image garbage collection is always run.
To disable image garbage collection, set to 100. The default is 85%
imageGcLowThreshold

integer

The percent of disk usage before which image garbage collection is never run.
This cannot be set higher than imageGcHighThreshold. The default is 80%
podMaxPids

integer

The maximum number of processes per pod.
topologyManagerPolicy

string

The Topology Manager policy to use.
For more information see Kubernetes Topology Manager. The default is 'none'. Allowed values are 'none', 'best-effort', 'restricted', and 'single-numa-node'.

KubeletDiskType

Determines the placement of emptyDir volumes, container runtime data root, and Kubelet ephemeral storage.

Name Type Description
OS

string

Kubelet will use the OS disk for its data.
Temporary

string

Kubelet will use the temporary disk for its data.

LinuxOSConfig

OS configurations of Linux agent nodes.

Name Type Description
swapFileSizeMB

integer

The size in MB of a swap file that will be created on each node.
sysctls

SysctlConfig

Sysctl settings for Linux agent nodes.
transparentHugePageDefrag

string

Whether the kernel should make aggressive use of memory compaction to make more hugepages available.
Valid values are 'always', 'defer', 'defer+madvise', 'madvise' and 'never'. The default is 'madvise'. For more information see Transparent Hugepages.
transparentHugePageEnabled

string

Whether transparent hugepages are enabled.
Valid values are 'always', 'madvise', and 'never'. The default is 'always'. For more information see Transparent Hugepages.

OSDiskType

The OS disk type to be used for machines in the agent pool.

Name Type Description
Ephemeral

string

Ephemeral OS disks are stored only on the host machine, just like a temporary disk. This provides lower read/write latency, along with faster node scaling and cluster upgrades.
Managed

string

Azure replicates the operating system disk for a virtual machine to Azure storage to avoid data loss should the VM need to be relocated to another host. Since containers aren't designed to have local state persisted, this behavior offers limited value while providing some drawbacks, including slower node provisioning and higher read/write latency.

OSSKU

Specifies the OS SKU used by the agent pool. The default is Ubuntu if OSType is Linux. The default is Windows2019 when Kubernetes <= 1.24 or Windows2022 when Kubernetes >= 1.25 if OSType is Windows.

Name Type Description
AzureLinux

string

Use AzureLinux as the OS for node images. Azure Linux is a container-optimized Linux distro built by Microsoft, visit https://aka.ms/azurelinux for more information.
CBLMariner

string

Deprecated OSSKU. Microsoft recommends that new deployments choose 'AzureLinux' instead.
Ubuntu

string

Use Ubuntu as the OS for node images.
Windows2019

string

Use Windows2019 as the OS for node images. Unsupported for system node pools. Windows2019 only supports Windows2019 containers; it cannot run Windows2022 containers and vice versa.
Windows2022

string

Use Windows2022 as the OS for node images. Unsupported for system node pools. Windows2022 only supports Windows2022 containers; it cannot run Windows2019 containers and vice versa.

OSType

The operating system type. The default is Linux.

Name Type Description
Linux

string

Use Linux.
Windows

string

Use Windows.

PortRange

The port range.

Name Type Description
portEnd

integer

The maximum port that is included in the range. It should be ranged from 1 to 65535, and be greater than or equal to portStart.
portStart

integer

The minimum port that is included in the range. It should be ranged from 1 to 65535, and be less than or equal to portEnd.
protocol

Protocol

The network protocol of the port.

PowerState

Describes the Power State of the cluster

Name Type Description
code

code

Tells whether the cluster is Running or Stopped

Protocol

The network protocol of the port.

Name Type Description
TCP

string

TCP protocol.
UDP

string

UDP protocol.

ScaleDownMode

Describes how VMs are added to or removed from Agent Pools. See billing states.

Name Type Description
Deallocate

string

Attempt to start deallocated instances (if they exist) during scale up and deallocate instances during scale down.
Delete

string

Create new instances during scale up and remove instances during scale down.

ScaleSetEvictionPolicy

The Virtual Machine Scale Set eviction policy.

Name Type Description
Deallocate

string

Nodes in the underlying Scale Set of the node pool are set to the stopped-deallocated state upon eviction. Nodes in the stopped-deallocated state count against your compute quota and can cause issues with cluster scaling or upgrading.
Delete

string

Nodes in the underlying Scale Set of the node pool are deleted when they're evicted.

ScaleSetPriority

The Virtual Machine Scale Set priority.

Name Type Description
Regular

string

Regular VMs will be used.
Spot

string

Spot priority VMs will be used. There is no SLA for spot nodes. See spot on AKS for more information.

SysctlConfig

Sysctl settings for Linux agent nodes.

Name Type Description
fsAioMaxNr

integer

Sysctl setting fs.aio-max-nr.
fsFileMax

integer

Sysctl setting fs.file-max.
fsInotifyMaxUserWatches

integer

Sysctl setting fs.inotify.max_user_watches.
fsNrOpen

integer

Sysctl setting fs.nr_open.
kernelThreadsMax

integer

Sysctl setting kernel.threads-max.
netCoreNetdevMaxBacklog

integer

Sysctl setting net.core.netdev_max_backlog.
netCoreOptmemMax

integer

Sysctl setting net.core.optmem_max.
netCoreRmemDefault

integer

Sysctl setting net.core.rmem_default.
netCoreRmemMax

integer

Sysctl setting net.core.rmem_max.
netCoreSomaxconn

integer

Sysctl setting net.core.somaxconn.
netCoreWmemDefault

integer

Sysctl setting net.core.wmem_default.
netCoreWmemMax

integer

Sysctl setting net.core.wmem_max.
netIpv4IpLocalPortRange

string

Sysctl setting net.ipv4.ip_local_port_range.
netIpv4NeighDefaultGcThresh1

integer

Sysctl setting net.ipv4.neigh.default.gc_thresh1.
netIpv4NeighDefaultGcThresh2

integer

Sysctl setting net.ipv4.neigh.default.gc_thresh2.
netIpv4NeighDefaultGcThresh3

integer

Sysctl setting net.ipv4.neigh.default.gc_thresh3.
netIpv4TcpFinTimeout

integer

Sysctl setting net.ipv4.tcp_fin_timeout.
netIpv4TcpKeepaliveProbes

integer

Sysctl setting net.ipv4.tcp_keepalive_probes.
netIpv4TcpKeepaliveTime

integer

Sysctl setting net.ipv4.tcp_keepalive_time.
netIpv4TcpMaxSynBacklog

integer

Sysctl setting net.ipv4.tcp_max_syn_backlog.
netIpv4TcpMaxTwBuckets

integer

Sysctl setting net.ipv4.tcp_max_tw_buckets.
netIpv4TcpTwReuse

boolean

Sysctl setting net.ipv4.tcp_tw_reuse.
netIpv4TcpkeepaliveIntvl

integer

Sysctl setting net.ipv4.tcp_keepalive_intvl.
netNetfilterNfConntrackBuckets

integer

Sysctl setting net.netfilter.nf_conntrack_buckets.
netNetfilterNfConntrackMax

integer

Sysctl setting net.netfilter.nf_conntrack_max.
vmMaxMapCount

integer

Sysctl setting vm.max_map_count.
vmSwappiness

integer

Sysctl setting vm.swappiness.
vmVfsCachePressure

integer

Sysctl setting vm.vfs_cache_pressure.

WorkloadRuntime

Determines the type of workload a node can run.

Name Type Description
OCIContainer

string

Nodes will use Kubelet to run standard OCI container workloads.
WasmWasi

string

Nodes will use Krustlet to run WASM workloads using the WASI provider (Preview).