Windows container version compatibility

Windows Server 2016 and Windows 10 Anniversary Update (both version 14393) were the first Windows releases that could build and run Windows Server containers. Containers built using these versions can run on newer releases, but there are a few things you need to know before you start.

As we've been improving the Windows container features, we've had to make some changes that can affect compatibility. Older containers will run the same on newer hosts with Hyper-V isolation, and will use the same (older) kernel version. However, if you want to run a container based on a newer Windows build, it can only run on the newer host build.

Windows Server host OS compatibility

Container base image OS version Supports Hyper-V isolation Supports process isolation
Windows Server, version 2022 ✔ ✔
Windows Server, version 20H2 ✔ ❌
Windows Server, version 2004 ✔ ❌
Windows Server, version 1909 ✔ ❌
Windows Server, version 1903 ✔ ❌
Windows Server 2019 ✔ ❌
Windows Server 2016 ✔ ❌

Windows Client host OS compatibility

Container base image OS version Supports Hyper-V isolation Supports process isolation
Windows Server, version 21H1 ✔ ❌
Windows Server, version 20H2 ✔ ✔
Windows Server, version 2004 ✔ ❌
Windows Server, version 1909 ✔ ❌
Windows Server, version 1903 ✔ ❌
Windows Server 2019 ✔ ❌
Windows Server 2016 ✔ ❌

For Windows Server 2022, forward compatibility for Windows 10 21H1 container hosts is temporarily enabled to run Windows Server 2022 images using Hyper-V isolation. You can use specific tags for Windows Server 2022 container images for Server Core, Nano Server, and Server images that are specifically published for running on Windows 10 21H1 hosts with Hyper-V isolation.

If you are running a Windows 10 21H1 container host, you can pull the following temporary images:

  • docker pull mcr.microsoft.com/windows/server:win10-21h1-preview
  • docker pull mcr.microsoft.com/windows/nanoserver:win10-21h1-preview
  • docker pull mcr.microsoft.com/windows/servercore:win10-21h1-preview

When the GA release for Windows 11 occurs, the temporary images will be removed, and customers running Windows 11 and Windows Server 2022 hosts will be able to use the regular container images.

Matching container host version with container image versions

Windows Server containers

Because Windows Server containers and the underlying host share a single kernel, the container's base image OS version must match that of the host. If the versions are different, the container may start, but full functionally isn't guaranteed. The Windows operating system has four levels of versioning: major, minor, build and revision. For example, version 10.0.14393.103 would have a major version of 10, a minor version of 0, a build number of 14393, and a revision number of 103. The build number only changes when new versions of the OS are published, such as version 1709, 1903, and so on. The revision number is updated as Windows updates are applied.

Build number (new release of Windows)

Windows Server containers are blocked from starting when the build number between the container host and the container image are different. For example, when the container host is version 10.0.14393.* (Windows Server 2016) and container image is version 10.0.16299.* (Windows Server version 1709), the container won't start.

Revision number (patching)

Windows Server containers currently don't support scenarios where Windows Server 2016-based containers run in a system where the revision numbers of the container host and the container image are different. For example, if the container host is version 10.0.14393.1914 (Windows Server 2016 with KB4051033 applied) and the container image is version 10.0.14393.1944 (Windows Server 2016 with KB4053579 applied), then the image might not start.

However, for hosts or images using Windows Server version 1809 and later, this rule doesn't apply, and the host and container image don't need to have matching revisions.

We recommend you keep your systems (host and container) up-to-date with the latest patches and updates to stay secure.

Note

You might encounter issues when using Windows Server containers with the February 11, 2020 security update release (also called "2B") or later monthly security update releases. See this article for more details.

We strongly recommend you update both your host and containers with the latest patches and updates to stay secure and compatible. For important guidance for how to update Windows containers, see Update Windows Server containers.

Practical application

Example 1: The container host is running Windows Server 2016 with KB4041691 applied. Any Windows Server container deployed to this host must be based on the version 10.0.14393.1770 container base images. If you apply KB4053579 to the host container, you must also update the images to make sure the host container supports them.

Example 2: The container host is running Windows Server version 1809 with KB4534273 applied. Any Windows Server container deployed to this host must be based on a Windows Server version 1809 (10.0.17763) container base image, but doesn't need to match the host KB. If KB4534273 is applied to the host, the container images will still be supported, but we recommend you update them to address any potential security issues.

Querying version

Method 1: Introduced in version 1709, the cmd prompt and ver command now return the revision details.

Microsoft Windows [Version 10.0.16299.125]
(c) 2017 Microsoft Corporation. All rights reserved.

C:\>ver

Microsoft Windows [Version 10.0.16299.125]

Method 2: Query the following registry key: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion

For example:

C:\>reg query "HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion" /v BuildLabEx

Windows PowerShell
Copyright (C) 2016 Microsoft Corporation. All rights reserved.

PS C:\Users\Administrator> (Get-ItemProperty 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\').BuildLabEx
14393.321.amd64fre.rs1_release_inmarket.161004-2338

To check what version your base image uses, review the tags on the Docker hub or the image hash table provided in the image description. The Windows 10 update history page lists when each build and revision was released.

Hyper-V isolation for containers

You can run Windows containers with or without Hyper-V isolation. Hyper-V isolation creates a secure boundary around the container with an optimized VM. Unlike standard Windows containers that share the kernel between containers and the host, each Hyper-V isolated container has its own instance of the Windows kernel. This means you can have different OS versions in the container host and image (for more information, see the following compatibility matrix).

To run a container with Hyper-V isolation, simply add the tag --isolation=hyperv to your docker run command.

Errors from mismatched versions

If you try to run an unsupported combination, you'll get the following error:

docker: Error response from daemon: container b81ed896222eb87906ccab1c3dd2fc49324eafa798438f7979b87b210906f839 encountered an error during CreateContainer: failure in a Windows system call: The operating system of the container does not match the operating system of the host. (0xc0370101) extra info: {"SystemType":"Container","Name":"b81ed896222eb87906ccab1c3dd2fc49324eafa798438f7979b87b210906f839","Owner":"docker","IsDummy":false,"VolumePath":"\\\\?\\Volume{2443d38a-1379-4bcf-a4b7-fc6ad4cd7b65}","IgnoreFlushesDuringBoot":true,"LayerFolderPath":"C:\\ProgramData\\docker\\windowsfilter\\b81ed896222eb87906ccab1c3dd2fc49324eafa798438f7979b87b210906f839","Layers":[{"ID":"1532b584-8431-5b5a-8735-5e1b4fe9c2a9","Path":"C:\\ProgramData\\docker\\windowsfilter\\b2b88bc2a47abcc682e422507abbba9c9b6d826d34e67b9e4e3144cc125a1f80"},{"ID":"a64b8da5-cd6e-5540-bc73-d81acae6da54","Path":"C:\\ProgramData\\docker\\windowsfilter\\5caaedbced1f546bccd01c9d31ea6eea4d30701ebba7b95ee8faa8c098a6845a"}],"HostName":"b81ed896222e","MappedDirectories":[],"HvPartition":false,"EndpointList":["002a0d9e-13b7-42c0-89b2-c1e80d9af243"],"Servicing":false,"AllowUnqualifiedDNSQuery":true}.

There are three ways you can resolve this error:

  • Rebuild the container based on the correct version of mcr.microsoft.com/microsoft-windows-nanoserver or mcr.microsoft.com/windows/servercore
  • If the host is newer, run docker run --isolation=hyperv ...
  • Try running the container on a different host with the same Windows version

Choose which container OS version to use

Note

As of April 16, 2019, the "latest" tag is no longer published or maintained for the Windows base OS container images. Please declare a specific tag when pulling or referencing images from these repos.

You must know which version you need to use for your container. For example, if you want Windows Server version 1809 as your container OS and want to have the latest patches for it, you should use the tag 1809 when specifying which version of the base OS container images you want, like so:

FROM mcr.microsoft.com/windows/nanoserver:1809
...

However, if you want a specific patch of Windows Server version 1809, you can specify the KB number in the tag. For example, to get a Nano Server base OS container image from Windows Server version 1809 with the KB4493509 applied to it, you would specify it like so:

FROM mcr.microsoft.com/windows/nanoserver:1809-KB4493509
...

You can also specify the exact patches you need with the schema we have used previously, by specifying the OS version in the tag:

FROM mcr.microsoft.com/windows/nanoserver:10.0.17763.437
...

The Server Core base images based on Windows Server 2019 and Windows Server 2016 are Long-Term Servicing Channel (LTSC) releases. If you for instance want Windows Server 2019 as your Server Core image's container OS and want to have the latest patches for it, you can specify LTSC releases like so:

FROM mcr.microsoft.com/windows/servercore:ltsc2019
...

Matching versions using Docker Swarm

Docker Swarm doesn't currently have a built-in way to match the version of Windows that a container uses to a host with the same version. If you update the service to use a newer container, it will run successfully.

If you need to run multiple versions of Windows for a long period of time, there are two approaches you can take: either configure the Windows hosts to always use Hyper-V isolation or use label constraints.

Finding a service that won't start

If a service won't start, you'll see that the MODE is replicated but REPLICAS will get stuck at 0. To see if the OS version is the problem, run the following commands:

Run docker service ls to find the service name:

ID                  NAME                MODE                REPLICAS            IMAGE                                             PORTS
xh6mwbdq2uil        angry_liskov        replicated          0/1                 windows/servercore/iis

Run docker service ps (service name) to get the status and latest attempts:

C:\Program Files\Docker>docker service ps angry_liskov
ID                  NAME                 IMAGE                                             NODE                DESIRED STATE       CURRENT STATE               ERROR                              PORTS
klkbhn742lv0        angry_liskov.1       windows/servercore/iis   WIN-BSTMQDRQC2E     Ready               Ready 3 seconds ago
y5blbdum70zo         \_ angry_liskov.1   windows/servercore/iis   WIN-BSTMQDRQC2E     Shutdown            Failed 24 seconds ago       "starting container failed: co…"
yjq6zwzqj8kt         \_ angry_liskov.1   windows/servercore/iis   WIN-BSTMQDRQC2E     Shutdown            Failed 31 seconds ago       "starting container failed: co…"

ytnnv80p03xx         \_ angry_liskov.1   windows/servercore/iis   WIN-BSTMQDRQC2E     Shutdown            Failed about a minute ago   "starting container failed: co…"
xeqkxbsao57w         \_ angry_liskov.1   windows/servercore/iis   WIN-BSTMQDRQC2E     Shutdown            Failed about a minute ago   "starting container failed: co…"

If you see starting container failed: ..., you can see the full error with docker service ps --no-trunc (container name):

C:\Program Files\Docker>docker service ps --no-trunc angry_liskov
ID                          NAME                 IMAGE                                                                                                                     NODE                DESIRED STATE       CURRENT STATE                     ERROR                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          PORTS
dwsd6sjlwsgic5vrglhtxu178   angry_liskov.1       windows/servercore/iis@sha256:868bca7e89e1743792e15f78edb5a73070ef44eae6807dc3f05f9b94c23943d5   WIN-BSTMQDRQC2E     Running             Starting less than a second ago
y5blbdum70zoh1f6uhx5nxsfv    \_ angry_liskov.1   windows/servercore/iis@sha256:868bca7e89e1743792e15f78edb5a73070ef44eae6807dc3f05f9b94c23943d5   WIN-BSTMQDRQC2E     Shutdown            Failed 39 seconds ago             "starting container failed: container e7b5d3adba7e510569c18d8e55f7c689d7cb92be40a516c91b363e27f84604d0 encountered an error during CreateContainer: failure in a Windows system call: The operating system of the container does not match the operating system of the host. (0xc0370101) extra info: {"SystemType":"Container","Name":"e7b5d3adba7e510569c18d8e55f7c689d7cb92be40a516c91b363e27f84604d0","Owner":"docker","VolumePath":"\\\\?\\Volume{2443d38a-1379-4bcf-a4b7-fc6ad4cd7b65}","IgnoreFlushesDuringBoot":true,"LayerFolderPath":"C:\\ProgramData\\docker\\windowsfilter\\e7b5d3adba7e510569c18d8e55f7c689d7cb92be40a516c91b363e27f84604d0","Layers":[{"ID":"bcf2630f-ea95-529b-b33c-e5cdab0afdb4","Path":"C:\\ProgramData\\docker\\windowsfilter\\200235127f92416724ae1d53ed3fdc86d78767132d019bdda1e1192ee4cf3ae4"},{"ID":"e3ea10a8-4c2f-5b93-b2aa-720982f116f6","Path":"C:\\ProgramData\\docker\\windowsfilter\\0ccc9fa71a9f4c5f6f3bc8134fe3533e454e09f453de662cf99ab5d2106abbdc"},{"ID":"cff5391f-e481-593c-aff7-12e080c653ab","Path":"C:\\ProgramData\\docker\\windowsfilter\\a49576b24cd6ec4a26202871c36c0a2083d507394a3072186133131a72601a31"},{"ID":"499cb51e-b891-549a-b1f4-8a25a4665fbd","Path":"C:\\ProgramData\\docker\\windowsfilter\\fdf2f52c4323c62f7ff9b031c0bc3af42cf5fba91098d51089d039fb3e834c08"},{"ID":"1532b584-8431-5b5a-8735-5e1b4fe9c2a9","Path":"C:\\ProgramData\\docker\\windowsfilter\\b2b88bc2a47abcc682e422507abbba9c9b6d826d34e67b9e4e3144cc125a1f80"},{"ID":"a64b8da5-cd6e-5540-bc73-d81acae6da54","Path":"C:\\ProgramData\\docker\\windowsfilter\\5caaedbced1f546bccd01c9d31ea6eea4d30701ebba7b95ee8faa8c098a6845a"}],"HostName":"e7b5d3adba7e","HvPartition":false,"EndpointList":["298bb656-8800-4948-a41c-1b0500f3d94c"],"AllowUnqualifiedDNSQuery":true}"

This is the same error as CreateContainer: failure in a Windows system call: The operating system of the container does not match the operating system of the host. (0xc0370101).

Fix - Update the service to use a matching version

There are two considerations for Docker Swarm. In the case where you have a compose file that has a service that uses an image you didn't create, you'll want to update the reference accordingly. For example:

version: '3'

services:
  YourServiceName:
    image: windows/servercore:1709
...

The other consideration is if the image you are pointing to is one that you've created yourself (for example, contoso/myimage):

version: '3'

services:
  YourServiceName:
    image: contoso/myimage
...

In this case, you should use the method described in Errors from mismatched versions to modify that dockerfile instead of the docker-compose line.

Mitigation - Use Hyper-V isolation with Docker Swarm

Windows containers supports using Hyper-V isolation on a per-container basis, which requires changing the Docker service configuration, and then restarting the Docker engine.

  1. Edit C:\ProgramData\docker\config\daemon.json

  2. Add a line with "exec-opts":["isolation=hyperv"]

    Note

    The daemon.json file does not exist by default. If you find that this is the case when you peek into the directory, you must create the file. Then you'll want to copy in the following:

    {
    "exec-opts":["isolation=hyperv"]
}

  3. Close and save the file, then restart the docker engine by running the following cmdlets in PowerShell:

    Stop-Service docker
Start-Service docker

  4. After you've restarted the service, launch your containers. Once they're running, you can verify the isolation level of a container by inspecting the container with the following cmdlet:

    docker inspect --format='{{json .HostConfig.Isolation}}' $instanceNameOrId

It will return either "process" or "hyperv". If you have modified and set your daemon.json as described above, it should show the latter.

Mitigation - Use labels and constraints

Here's how to use labels and constraints to match versions:

  1. Add labels to each node.

    On each node, add two labels: OS and OsVersion. This assumes you're running locally but could be modified to set them on a remote host instead.

    docker node update --label-add OS="windows" $ENV:COMPUTERNAME
docker node update --label-add OsVersion="$((Get-ComputerInfo).OsVersion)" $ENV:COMPUTERNAME

    Afterwards, you can check those by running the docker node inspect command, which should show the newly added labels:

           "Spec": {
            "Labels": {
               "OS": "windows",
               "OsVersion": "10.0.16296"
           },
            "Role": "manager",
            "Availability": "active"
        }

  2. Add a service constraint.

    Now that you've labeled each node, you can update constraints that determine placement of services. In the following example, replace "contoso_service" with the name of your actual service:

    docker service update \
    --constraint-add "node.labels.OS == windows" \
    --constraint-add "node.labels.OsVersion == $((Get-ComputerInfo).OsVersion)" \
    contoso_service

    This enforces and limits where a node may run.

To learn more about how to use service constraints, check out the service create reference.

Matching versions using Kubernetes

The same issue described in Matching versions using Docker Swarm can happen when pods are scheduled in Kubernetes. This issue can be avoided with similar strategies:

  • Rebuild the container based on the same OS version in development and production. To learn how, see Choose which container OS version to use.
  • Use node labels and nodeSelectors to make sure pods are scheduled on compatible nodes if both Windows Server 2016 and Windows Server version 1709 nodes are in the same cluster
  • Use separate clusters based on OS version

Finding pods failed on OS mismatch

In this case, a deployment included a pod that was scheduled on a node with a mismatched OS version, and without Hyper-V isolation enabled.

The same error is shown in the events listed with kubectl describe pod <podname>. After several attempts, the pod status will probably be CrashLoopBackOff.

$ kubectl -n plang describe pod fabrikamfiber.web-789699744-rqv6p

Name:           fabrikamfiber.web-789699744-rqv6p
Namespace:      plang
Node:           38519acs9011/10.240.0.6
Start Time:     Mon, 09 Oct 2017 19:40:30 +0000
Labels:         io.kompose.service=fabrikamfiber.web
                pod-template-hash=789699744
Annotations:    kubernetes.io/created-by={"kind":"SerializedReference","apiVersion":"v1","reference":{"kind":"ReplicaSet","namespace":"plang","name":"fabrikamfiber.web-789699744","uid":"b5062a08-ad29-11e7-b16e-000d3a...
Status:         Running
IP:             10.244.3.169
Created By:     ReplicaSet/fabrikamfiber.web-789699744
Controlled By:  ReplicaSet/fabrikamfiber.web-789699744
Containers:
  fabrikamfiberweb:
    Container ID:       docker://eab0151378308315ed6c31adf4ad9e31e6d65fd300e56e742757004a969a803a
    Image:              patricklang/fabrikamfiber.web:latest
    Image ID:           docker-pullable://patricklang/fabrikamfiber.web@sha256:562741016ce7d9a232a389449a4fd0a0a55aab178cf324144404812887250ead
    Port:               80/TCP
    State:              Waiting
      Reason:           CrashLoopBackOff
    Last State:         Terminated
      Reason:           ContainerCannotRun
      Message:          container eab0151378308315ed6c31adf4ad9e31e6d65fd300e56e742757004a969a803a encountered an error during CreateContainer: failure in a Windows system call: The operating system of the container does not match the operating system of the host. (0xc0370101) extra info: {"SystemType":"Container","Name":"eab0151378308315ed6c31adf4ad9e31e6d65fd300e56e742757004a969a803a","Owner":"docker","IsDummy":false,"VolumePath":"\\\\?\\Volume{037b6606-bc9c-461f-ae02-829c28410798}","IgnoreFlushesDuringBoot":true,"LayerFolderPath":"C:\\ProgramData\\docker\\windowsfilter\\eab0151378308315ed6c31adf4ad9e31e6d65fd300e56e742757004a969a803a","Layers":[{"ID":"f8bc427f-7aa3-59c6-b271-7331713e9451","Path":"C:\\ProgramData\\docker\\windowsfilter\\e206d2514a6265a76645b9d6b3dc6a78777c34dbf5da9fa2d564651645685881"},{"ID":"a6f35e41-a86c-5e4d-a19a-a6c2464bfb47","Path":"C:\\ProgramData\\docker\\windowsfilter\\0f21f1e28ef13030bbf0d87cbc97d1bc75f82ea53c842e9a3250a2156ced12d5"},{"ID":"4f624ca7-2c6d-5c42-b73f-be6e6baf2530","Path":"C:\\ProgramData\\docker\\windowsfilter\\4d9e2ad969fbd74fd58c98b5ab61e55a523087910da5200920e2b6f641d00c67"},{"ID":"88e360ff-32af-521d-9a3f-3760c12b35e2","Path":"C:\\ProgramData\\docker\\windowsfilter\\9e16a3d53d3e9b33344a6f0d4ed34c8a46448ee7636b672b61718225b8165e6e"},{"ID":"20f1a4e0-a6f3-5db3-9bf2-01fd3e9e855a","Path":"C:\\ProgramData\\docker\\windowsfilter\\7eec7f59f9adce38cc0a6755da58a3589287d920d37414b5b21b5b543d910461"},{"ID":"c2b3d728-4879-5343-a92a-b735752a4724","Path":"C:\\ProgramData\\docker\\windowsfilter\\8ed04b60acc0f65f541292a9e598d5f73019c8db425f8d49ea5819eab16a42f3"},{"ID":"2973e760-dc59-5800-a3de-ab9d93be81e5","Path":"C:\\ProgramData\\docker\\windowsfilter\\cc71305d45f09ce377ef497f28c3a74ee027c27f20657d2c4a5f157d2457cc75"},{"ID":"454a7d36-038c-5364-8a25-fa84091869d6","Path":"C:\\ProgramData\\docker\\windowsfilter\\9e8cde1ce8f5de861a5f22841f1ab9bc53d5f606d06efeacf5177f340e8d54d0"},{"ID":"9b748c8c-69eb-55fb-a1c1-5688cac4efd8","Path":"C:\\ProgramData\\docker\\windowsfilter\\8e02bf5404057055a71d542780a2bb2731be4b3707c01918ba969fb4d83b98ec"},{"ID":"bfde5c26-b33f-5424-9405-9d69c2fea4d0","Path":"C:\\ProgramData\\docker\\windowsfilter\\77483cedfb0964008c33d92d306734e1fab3b5e1ebb27e898f58ccfd108108f2"},{"ID":"bdabfbf5-80d1-57f1-86f3-448ce97e2d05","Path":"C:\\ProgramData\\docker\\windowsfilter\\aed2ebbb31ad24b38ee8521dd17744319f83d267bf7f360bc177e27ae9a006cf"},{"ID":"ad9b34f2-dcee-59ea-8962-b30704ae6331","Path":"C:\\ProgramData\\docker\\windowsfilter\\d44d3a675fec1070b61d6ea9bacef4ac12513caf16bd6453f043eed2792f75d8"}],"HostName":"fabrikamfiber.web-789699744-rqv6p","MappedDirectories":[{"HostPath":"c:\\var\\lib\\kubelet\\pods\\b50f0027-ad29-11e7-b16e-000d3afd2878\\volumes\\kubernetes.io~secret\\default-token-rw9dn","ContainerPath":"c:\\var\\run\\secrets\\kubernetes.io\\serviceaccount","ReadOnly":true,"BandwidthMaximum":0,"IOPSMaximum":0}],"HvPartition":false,"EndpointList":null,"NetworkSharedContainerName":"586870f5833279678773cb700db3c175afc81d557a75867bf39b43f985133d13","Servicing":false,"AllowUnqualifiedDNSQuery":false}
      Exit Code:        128
      Started:          Mon, 09 Oct 2017 20:27:08 +0000
      Finished:         Mon, 09 Oct 2017 20:27:08 +0000
    Ready:              False
    Restart Count:      10
    Environment:        <none>
    Mounts:
      /var/run/secrets/kubernetes.io/serviceaccount from default-token-rw9dn (ro)
Conditions:
  Type          Status
  Initialized   True
  Ready         False
  PodScheduled  True
Volumes:
  default-token-rw9dn:
    Type:       Secret (a volume populated by a Secret)
    SecretName: default-token-rw9dn
    Optional:   false
QoS Class:      BestEffort
Node-Selectors: beta.kubernetes.io/os=windows
Tolerations:    <none>
Events:
  FirstSeen     LastSeen        Count   From                    SubObjectPath                           Type            Reason                  Message
  ---------     --------        -----   ----                    -------------                           --------        ------                  -------
  49m           49m             1       default-scheduler                                               Normal          Scheduled               Successfully assigned fabrikamfiber.web-789699744-rqv6p to 38519acs9011
  49m           49m             1       kubelet, 38519acs9011                                           Normal          SuccessfulMountVolume   MountVolume.SetUp succeeded for volume "default-token-rw9dn"
  29m           29m             1       kubelet, 38519acs9011   spec.containers{fabrikamfiberweb}       Warning         Failed                  Failed to pull image "patricklang/fabrikamfiber.web:latest": rpc error: code = 2 desc = Error response from daemon: {"message":"Get https://registry-1.docker.io/v2/: dial tcp: lookup registry-1.docker.io: no such host"}
  49m           3m              12      kubelet, 38519acs9011   spec.containers{fabrikamfiberweb}       Normal          Pulling                 pulling image "patricklang/fabrikamfiber.web:latest"
  33m           3m              11      kubelet, 38519acs9011   spec.containers{fabrikamfiberweb}       Normal          Pulled                  Successfully pulled image "patricklang/fabrikamfiber.web:latest"
  33m           3m              11      kubelet, 38519acs9011   spec.containers{fabrikamfiberweb}       Normal          Created                 Created container
  33m           2m              11      kubelet, 38519acs9011   spec.containers{fabrikamfiberweb}       Warning         Failed                  Error: failed to start container "fabrikamfiberweb": Error response from daemon: {"message":"container fabrikamfiberweb encountered an error during CreateContainer: failure in a Windows system call: The operating system of the container does not match the operating system of the host. (0xc0370101) extra info: {\"SystemType\":\"Container\",\"Name\":\"fabrikamfiberweb\",\"Owner\":\"docker\",\"IsDummy\":false,\"VolumePath\":\"\\\\\\\\?\\\\Volume{037b6606-bc9c-461f-ae02-829c28410798}\",\"IgnoreFlushesDuringBoot\":true,\"LayerFolderPath\":\"C:\\\\ProgramData\\\\docker\\\\windowsfilter\\\\fabrikamfiberweb\",\"Layers\":[{\"ID\":\"f8bc427f-7aa3-59c6-b271-7331713e9451\",\"Path\":\"C:\\\\ProgramData\\\\docker\\\\windowsfilter\\\\e206d2514a6265a76645b9d6b3dc6a78777c34dbf5da9fa2d564651645685881\"},{\"ID\":\"a6f35e41-a86c-5e4d-a19a-a6c2464bfb47\",\"Path\":\"C:\\\\ProgramData\\\\docker\\\\windowsfilter\\\\0f21f1e28ef13030bbf0d87cbc97d1bc75f82ea53c842e9a3250a2156ced12d5\"},{\"ID\":\"4f624ca7-2c6d-5c42-b73f-be6e6baf2530\",\"Path\":\"C:\\\\ProgramData\\\\docker\\\\windowsfilter\\\\4d9e2ad969fbd74fd58c98b5ab61e55a523087910da5200920e2b6f641d00c67\"},{\"ID\":\"88e360ff-32af-521d-9a3f-3760c12b35e2\",\"Path\":\"C:\\\\ProgramData\\\\docker\\\\windowsfilter\\\\9e16a3d53d3e9b33344a6f0d4ed34c8a46448ee7636b672b61718225b8165e6e\"},{\"ID\":\"20f1a4e0-a6f3-5db3-9bf2-01fd3e9e855a\",\"Path\":\"C:\\\\ProgramData\\\\docker\\\\windowsfilter\\\\7eec7f59f9adce38cc0a6755da58a3589287d920d37414b5b21b5b543d910461\"},{\"ID\":\"c2b3d728-4879-5343-a92a-b735752a4724\",\"Path\":\"C:\\\\ProgramData\\\\docker\\\\windowsfilter\\\\8ed04b60acc0f65f541292a9e598d5f73019c8db425f8d49ea5819eab16a42f3\"},{\"ID\":\"2973e760-dc59-5800-a3de-ab9d93be81e5\",\"Path\":\"C:\\\\ProgramData\\\\docker\\\\windowsfilter\\\\cc71305d45f09ce377ef497f28c3a74ee027c27f20657d2c4a5f157d2457cc75\"},{\"ID\":\"454a7d36-038c-5364-8a25-fa84091869d6\",\"Path\":\"C:\\\\ProgramData\\\\docker\\\\windowsfilter\\\\9e8cde1ce8f5de861a5f22841f1ab9bc53d5f606d06efeacf5177f340e8d54d0\"},{\"ID\":\"9b748c8c-69eb-55fb-a1c1-5688cac4efd8\",\"Path\":\"C:\\\\ProgramData\\\\docker\\\\windowsfilter\\\\8e02bf5404057055a71d542780a2bb2731be4b3707c01918ba969fb4d83b98ec\"},{\"ID\":\"bfde5c26-b33f-5424-9405-9d69c2fea4d0\",\"Path\":\"C:\\\\ProgramData\\\\docker\\\\windowsfilter\\\\77483cedfb0964008c33d92d306734e1fab3b5e1ebb27e898f58ccfd108108f2\"},{\"ID\":\"bdabfbf5-80d1-57f1-86f3-448ce97e2d05\",\"Path\":\"C:\\\\ProgramData\\\\docker\\\\windowsfilter\\\\aed2ebbb31ad24b38ee8521dd17744319f83d267bf7f360bc177e27ae9a006cf\"},{\"ID\":\"ad9b34f2-dcee-59ea-8962-b30704ae6331\",\"Path\":\"C:\\\\ProgramData\\\\docker\\\\windowsfilter\\\\d44d3a675fec1070b61d6ea9bacef4ac12513caf16bd6453f043eed2792f75d8\"}],\"HostName\":\"fabrikamfiber.web-789699744-rqv6p\",\"MappedDirectories\":[{\"HostPath\":\"c:\\\\var\\\\lib\\\\kubelet\\\\pods\\\\b50f0027-ad29-11e7-b16e-000d3afd2878\\\\volumes\\\\kubernetes.io~secret\\\\default-token-rw9dn\",\"ContainerPath\":\"c:\\\\var\\\\run\\\\secrets\\\\kubernetes.io\\\\serviceaccount\",\"ReadOnly\":true,\"BandwidthMaximum\":0,\"IOPSMaximum\":0}],\"HvPartition\":false,\"EndpointList\":null,\"NetworkSharedContainerName\":\"586870f5833279678773cb700db3c175afc81d557a75867bf39b43f985133d13\",\"Servicing\":false,\"AllowUnqualifiedDNSQuery\":false}"}
  33m           11s             151     kubelet, 38519acs9011                                           Warning         FailedSync              Error syncing pod
  32m           11s             139     kubelet, 38519acs9011   spec.containers{fabrikamfiberweb}       Warning         BackOff                 Back-off restarting failed container

Mitigation - using node labels and nodeSelector

Run kubectl get node to get a list of all nodes. After that, you can run kubectl describe node (node name) to get more details.

In the following example, two Windows nodes are running different versions:

$ kubectl get node

NAME                        STATUS    AGE       VERSION
38519acs9010                Ready     21h       v1.7.7-7+e79c96c8ff2d8e
38519acs9011                Ready     4h        v1.7.7-25+bc3094f1d650a2
k8s-linuxpool1-38519084-0   Ready     21h       v1.7.7
k8s-master-38519084-0       Ready     21h       v1.7.7

$ kubectl describe node 38519acs9010

Name:                   38519acs9010
Role:
Labels:                 beta.kubernetes.io/arch=amd64
                        beta.kubernetes.io/instance-type=Standard_D2_v2
                        beta.kubernetes.io/os=windows
                        failure-domain.beta.kubernetes.io/region=westus2
                        failure-domain.beta.kubernetes.io/zone=0
                        kubernetes.io/hostname=38519acs9010
Annotations:            node.alpha.kubernetes.io/ttl=0
                        volumes.kubernetes.io/controller-managed-attach-detach=true
Taints:                 <none>
CreationTimestamp:      Fri, 06 Oct 2017 01:41:02 +0000

...

System Info:
 Machine ID:                    38519acs9010
 System UUID:
 Boot ID:
 Kernel Version:                10.0 14393 (14393.1715.amd64fre.rs1_release_inmarket.170906-1810)
 OS Image:
 Operating System:              windows
 Architecture:                  amd64
 ...

$ kubectl describe node 38519acs9011
Name:                   38519acs9011
Role:
Labels:                 beta.kubernetes.io/arch=amd64
                        beta.kubernetes.io/instance-type=Standard_DS1_v2
                        beta.kubernetes.io/os=windows
                        failure-domain.beta.kubernetes.io/region=westus2
                        failure-domain.beta.kubernetes.io/zone=0
                        kubernetes.io/hostname=38519acs9011
Annotations:            node.alpha.kubernetes.io/ttl=0
                        volumes.kubernetes.io/controller-managed-attach-detach=true
Taints:                 <none>
CreationTimestamp:      Fri, 06 Oct 2017 18:13:25 +0000
Conditions:
...

System Info:
 Machine ID:                    38519acs9011
 System UUID:
 Boot ID:
 Kernel Version:                10.0 16299 (16299.0.amd64fre.rs3_release.170922-1354)
 OS Image:
 Operating System:              windows
 Architecture:                  amd64
...

Let's use this example to show how to match the versions:

  1. Take note of each node name and Kernel Version from the system info.

    In our example, the info will look like this:

    Name Version
    38519acs9010 14393.1715.amd64fre.rs1_release_inmarket.170906-1810
    38519acs9011 16299.0.amd64fre.rs3_release.170922-1354

  2. Add a label to each node called beta.kubernetes.io/osbuild. Windows Server 2016 needs both major and minor versions (14393.1715 in this example) to be supported without Hyper-V isolation. Windows Server version 1709 only needs the major version (16299 in this example) to match.

    In this example, the command to add the labels looks like this:

    $ kubectl label node 38519acs9010 beta.kubernetes.io/osbuild=14393.1715


node "38519acs9010" labeled
$ kubectl label node 38519acs9011 beta.kubernetes.io/osbuild=16299

node "38519acs9011" labeled

  3. Check the labels are there by running kubectl get nodes --show-labels.

    In this example, the output will look like this:

    $ kubectl get nodes --show-labels

NAME                        STATUS                     AGE       VERSION                    LABELS
38519acs9010                Ready,SchedulingDisabled   3d        v1.7.7-7+e79c96c8ff2d8e    beta.kubernetes.io/arch=amd64,beta.kubernetes.io/instance-type=Standard_D2_v2,beta.kubernetes.io/os=windows,beta.kubernetes.io/osbuild=14393.1715,failure-domain.beta.kubernetes.io/region=westus2,failure-domain.beta.kubernetes.io/zone=0,kubernetes.io/hostname=38519acs9010
38519acs9011                Ready                      3d        v1.7.7-25+bc3094f1d650a2   beta.kubernetes.io/arch=amd64,beta.kubernetes.io/instance-type=Standard_DS1_v2,beta.kubernetes.io/os=windows,beta.kubernetes.io/osbuild=16299,failure-domain.beta.kubernetes.io/region=westus2,failure-domain.beta.kubernetes.io/zone=0,kubernetes.io/hostname=38519acs9011
k8s-linuxpool1-38519084-0   Ready                      3d        v1.7.7                     agentpool=linuxpool1,beta.kubernetes.io/arch=amd64,beta.kubernetes.io/instance-type=Standard_D2_v2,beta.kubernetes.io/os=linux,failure-domain.beta.kubernetes.io/region=westus2,failure-domain.beta.kubernetes.io/zone=0,kubernetes.io/hostname=k8s-linuxpool1-38519084-0,kubernetes.io/role=agent
k8s-master-38519084-0       Ready                      3d        v1.7.7                     beta.kubernetes.io/arch=amd64,beta.kubernetes.io/instance-type=Standard_D2_v2,beta.kubernetes.io/os=linux,failure-domain.beta.kubernetes.io/region=westus2,failure-domain.beta.kubernetes.io/zone=0,kubernetes.io/hostname=k8s-master-38519084-0,kubernetes.io/role=master

  4. Add node selectors to deployments. In this example case, we'll add a nodeSelector to the container spec with beta.kubernetes.io/os = windows and beta.kubernetes.io/osbuild = 14393.* or 16299 to match the base OS used by the container.

    Here's a full example for running a container built for Windows Server 2016:

    apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  annotations:
    kompose.cmd: kompose convert -f docker-compose-combined.yml
    kompose.version: 1.2.0 (99f88ef)
  creationTimestamp: null
  labels:
    io.kompose.service: fabrikamfiber.web
  name: fabrikamfiber.web
spec:
  replicas: 1
  strategy: {}
  template:
    metadata:
      creationTimestamp: null
      labels:
        io.kompose.service: fabrikamfiber.web
    spec:
      containers:
      - image: patricklang/fabrikamfiber.web:latest
        name: fabrikamfiberweb
        ports:
        - containerPort: 80
        resources: {}
      restartPolicy: Always
      nodeSelector:
        "beta.kubernetes.io/os": windows
        "beta.kubernetes.io/osbuild": "14393.1715"
status: {}

    The pod can now start with the updated deployment. The node selectors are also shown in kubectl describe pod <podname>, so you can run that command to verify they were added.

    The output for our example is as follows:

    $ kubectl -n plang describe po fa

Name:           fabrikamfiber.web-1780117715-5c8vw
Namespace:      plang
Node:           38519acs9010/10.240.0.4
Start Time:     Tue, 10 Oct 2017 01:43:28 +0000
Labels:         io.kompose.service=fabrikamfiber.web
                pod-template-hash=1780117715
Annotations:    kubernetes.io/created-by={"kind":"SerializedReference","apiVersion":"v1","reference":{"kind":"ReplicaSet","namespace":"plang","name":"fabrikamfiber.web-1780117715","uid":"6a07aaf3-ad5c-11e7-b16e-000d3...
Status:         Running
IP:             10.244.1.84
Created By:     ReplicaSet/fabrikamfiber.web-1780117715
Controlled By:  ReplicaSet/fabrikamfiber.web-1780117715
Containers:
  fabrikamfiberweb:
    Container ID:       docker://c94594fb53161f3821cf050d9af7546991aaafbeab41d333d9f64291327fae13
    Image:              patricklang/fabrikamfiber.web:latest
    Image ID:           docker-pullable://patricklang/fabrikamfiber.web@sha256:562741016ce7d9a232a389449a4fd0a0a55aab178cf324144404812887250ead
    Port:               80/TCP
    State:              Running
      Started:          Tue, 10 Oct 2017 01:43:42 +0000
    Ready:              True
    Restart Count:      0
    Environment:        <none>
    Mounts:
      /var/run/secrets/kubernetes.io/serviceaccount from default-token-rw9dn (ro)
Conditions:
  Type          Status
  Initialized   True
  Ready         True
  PodScheduled  True
Volumes:
  default-token-rw9dn:
    Type:       Secret (a volume populated by a Secret)
    SecretName: default-token-rw9dn
    Optional:   false
QoS Class:      BestEffort
Node-Selectors: beta.kubernetes.io/os=windows
                beta.kubernetes.io/osbuild=14393.1715
Tolerations:    <none>
Events:
  FirstSeen     LastSeen        Count   From                    SubObjectPath                           Type            Reason                  Message
  ---------     --------        -----   ----                    -------------                           --------        ------                  -------
  5m            5m              1       default-scheduler                                               Normal          Scheduled               Successfully assigned fabrikamfiber.web-1780117715-5c8vw to 38519acs9010
  5m            5m              1       kubelet, 38519acs9010                                           Normal          SuccessfulMountVolume   MountVolume.SetUp succeeded for volume "default-token-rw9dn"
  5m            5m              1       kubelet, 38519acs9010   spec.containers{fabrikamfiberweb}       Normal          Pulling                 pulling image "patricklang/fabrikamfiber.web:latest"
  5m            5m              1       kubelet, 38519acs9010   spec.containers{fabrikamfiberweb}       Normal          Pulled                  Successfully pulled image "patricklang/fabrikamfiber.web:latest"
  5m            5m              1       kubelet, 38519acs9010   spec.containers{fabrikamfiberweb}       Normal          Created                 Created container
  5m            5m              1       kubelet, 38519acs9010   spec.containers{fabrikamfiberweb}       Normal          Started                 Started container