[QUESTION] How to add extra args from the command line?

[tibeer]

What keywords did you search in kubeadm issues before filing this one?

oidc, extraargs

Is this a BUG REPORT or FEATURE REQUEST?

Neither not - just a question

Versions

kubeadm version (use kubeadm version):

kubeadm version: &version.Info{Major:"1", Minor:"28", GitVersion:"v1.28.8", GitCommit:"fc11ff34c34bc1e6ae6981dc1c7b3faa20b1ac2d", GitTreeState:"clean", BuildDate:"2024-03-15T00:05:37Z", GoVersion:"go1.21.8", Compiler:"gc", Platform:"linux/arm64"}

Environment:

• Kubernetes version (use kubectl version):

  Client Version: v1.29.3
  Kustomize Version: v5.0.4-0.20230601165947-6ce0bf390ce3
  Server Version: v1.28.8

• Cloud provider or hardware configuration:

  ARM64 Server, 4C 24GB RAM

• OS (e.g. from /etc/os-release):

  PRETTY_NAME="Ubuntu 22.04.4 LTS"
  NAME="Ubuntu"
  VERSION_ID="22.04"
  VERSION="22.04.4 LTS (Jammy Jellyfish)"
  VERSION_CODENAME=jammy
  ID=ubuntu
  ID_LIKE=debian
  HOME_URL="https://www.ubuntu.com/"
  SUPPORT_URL="https://help.ubuntu.com/"
  BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
  PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
  UBUNTU_CODENAME=jammy

• Kernel (e.g. uname -a):

  Linux beta 6.5.0-1019-oracle [kubeadm] Only supports configuration from one source at a time, flags or file #19~22.04.1-Ubuntu SMP Tue Mar 12 23:02:13 UTC 2024 aarch64 aarch64 aarch64 GNU/Linux

• Container runtime (CRI) (e.g. containerd, cri-o):

  containerd github.com/containerd/containerd 1.7.2

• Container networking plugin (CNI) (e.g. Calico, Cilium):

  calico

• Others:

What happened?

My current setup is trimmed to execute kubeadm without any configuration file, but instead with every parameter set from the command line itself from a remote host:

kubeadm init --upload-certs --apiserver-cert-extra-sans=<fqdn> --apiserver-advertise-address=0.0.0.0 --control-plane-endpoint=<fqdn>:6443 --pod-network-cidr=<pod_cidr_ipv4>,<pod_cidr_ipv6> --service-cidr=<service_cidr_ipv4>,<service_cidr_ipv6>

What you expected to happen?

I would like to also configure oidc as extra arguments for the apiServer, but I cannot find any command line option that allows me to set extraArgs.

How to reproduce it (as minimally and precisely as possible)?

N/A

Anything else we need to know?

Since it seems kubeadm command line arguments are a second class citizen, should I move to the config file instead?

[neolit123]

hi, we don't provide support on github. there is e.g. #kubeadm on k8s slack.

for this Q

you need to switch to config:
https://kubernetes.io/docs/reference/config-api/kubeadm-config.v1beta3/
https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/control-plane-flags/

but note if a flag with the same name is added more than one time it's not supported in v1beta3
#1601

you can use patches to workaround
https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/control-plane-flags/#patches

/support

[github-actions]

Hello, @tibeer 🤖 👋

You seem to have troubles using Kubernetes and kubeadm.
Note that our issue trackers should not be used for providing support to users.
There are special channels for that purpose.

Please see:

• https://github.com/kubernetes/kubeadm#support

[github-actions]

Hello, @tibeer 🤖 👋

You seem to have troubles using Kubernetes and kubeadm.
Note that our issue trackers should not be used for providing support to users.
There are special channels for that purpose.

Please see:

• https://github.com/kubernetes/kubeadm#support