Ossku type

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.
KnownOssku can be used interchangeably with Ossku, this enum contains the known values that the service supports.

Known values supported by the service

Ubuntu: Use Ubuntu as the OS for node images.
AzureLinux: 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.
AzureLinux3: Use AzureLinux3 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. For limitations, visit https://aka.ms/aks/node-images. For OS migration guidance, see https://aka.ms/aks/upgrade-os-version.
Mariner: Deprecated OSSKU. Microsoft recommends that new deployments choose 'AzureLinux' instead.
Flatcar: Use Flatcar Container Linux as the OS for node images. Flatcar is a container-optimized, security-focused Linux OS, with an immutable filesystem and part of the Cloud Native Computing Foundation (CNCF). For more information about Flatcar Container Linux for AKS, see aka.ms/aks/flatcar-container-linux-for-aks
CBLMariner: Deprecated OSSKU. Microsoft recommends that new deployments choose 'AzureLinux' instead.
Windows2019: 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: 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.
Ubuntu2204: Use Ubuntu2204 as the OS for node images, however, Ubuntu 22.04 may not be supported for all nodepools. For limitations and supported kubernetes versions, see https://aka.ms/aks/supported-ubuntu-versions
Windows2025: Use Windows2025 as the OS for node images. Unsupported for system node pools. Windows2025 supports Windows2022 and Windows 2025 containers; it cannot run Windows2019 containers and vice versa.
WindowsAnnual: Use Windows Annual Channel version as the OS for node images. Unsupported for system node pools. Details about supported container images and kubernetes versions under different AKS Annual Channel versions could be seen in https://aka.ms/aks/windows-annual-channel-details.
Ubuntu2404: Use Ubuntu2404 as the OS for node images, however, Ubuntu 24.04 may not be supported for all nodepools. For limitations and supported kubernetes versions, see see https://aka.ms/aks/supported-ubuntu-versions