Error: unknown command "upgrade" for "kubeadm"

[adepuravikrishna]

BUG REPORT:

/kind bug

@k8s-sig-onprem-bugs Kubeadm upgrade plan command is not working in the version v1.7.5. We are planning to upgrade the cluster v1.75 to v1.9.x. Could you please advise me the kubeadm command available in v1.7.5?

**Is this a BUG REPORT **:

[root@machienname]# kubeadm version
kubeadm version: &version.Info{Major:"1", Minor:"7", GitVersion:"v1.7.5", GitCommit:"17d7182a7ccbb167074be7a87f0a68bd00d58d97", GitTreeState:"clean", BuildDate:"2017-08-31T08:56:23Z", GoVersion:"go1.8.3", Compiler:"gc", Platform:"linux/amd64"}
[root@machinename]# kubeadm upgrade apply v1.9.6
Error: unknown command "upgrade" for "kubeadm"
Run 'kubeadm --help' for usage.
[root@machinename]# uname -a
Linux machinenmae 3.10.0-693.17.1.el7.x86_64 #1 SMP Sun Jan 14 10:36:03 EST 2018 x86_64 x86_64 x86_64 GNU/Linux
[root@machinename]# kubectl version
Client Version: version.Info{Major:"1", Minor:"9", GitVersion:"v1.9.3", GitCommit:"d2835416544f298c919e2ead3be3d0864b52323b", GitTreeState:"clean", BuildDate:"2018-02-07T12:22:21Z", GoVersion:"go1.9.2", Compiler:"gc", Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"7", GitVersion:"v1.7.5", GitCommit:"17d7182a7ccbb167074be7a87f0a68bd00d58d97", GitTreeState:"clean", BuildDate:"2017-08-31T08:56:23Z", GoVersion:"go1.8.3", Compiler:"gc", Platform:"linux/amd64"}
[

Environment:

• Kubernetes version (use kubectl version):v1.7.5
• Cloud provider or hardware configuration: on-premise
• OS (e.g. from /etc/os-release):
  NAME="Red Hat Enterprise Linux Server"
  VERSION="7.4 (Maipo)"
  ID="rhel"
  ID_LIKE="fedora"
  VARIANT="Server"
  VARIANT_ID="server"
  VERSION_ID="7.4"
  PRETTY_NAME="Red Hat Enterprise Linux Server 7.4 (Maipo)"
  ANSI_COLOR="0;31"
  CPE_NAME="cpe:/o:redhat:enterprise_linux:7.4:GA:server"
  HOME_URL="https://www.redhat.com/"
  BUG_REPORT_URL="https://bugzilla.redhat.com/"

REDHAT_BUGZILLA_PRODUCT="Red Hat Enterprise Linux 7"
REDHAT_BUGZILLA_PRODUCT_VERSION=7.4
REDHAT_SUPPORT_PRODUCT="Red Hat Enterprise Linux"
REDHAT_SUPPORT_PRODUCT_VERSION="7.4"

• Kernel (e.g. uname -a):Linux machinename 3.10.0-693.17.1.el7.x86_64 Unit test coverage in Kubelet is lousy. (~30%) #1 SMP Sun Jan 14 10:36:03
• Install tools:
• Others:
  /sig cli

[timothysc]

Upgrades that skip versions is not supported and documented.
v1.75 to v1.9.x is unsupported -> closing.