82 lines
2.3 KiB
Markdown
82 lines
2.3 KiB
Markdown
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---
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reviewers:
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- sig-cluster-lifecycle
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title: Customizing control plane configuration with kubeadm
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content_template: templates/concept
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weight: 50
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---
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{{% capture overview %}}
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kubeadm’s configuration exposes the following fields that can be used to override the default flags passed to control plane components such as the APIServer, ControllerManager and Scheduler:
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- `APIServerExtraArgs`
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- `ControllerManagerExtraArgs`
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- `SchedulerExtraArgs`
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These fields consist of `key: value` pairs. To override a flag for a control plane component:
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1. Add the appropriate field to your configuration.
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2. Add the flags to override to the field.
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For more details on each field in the configuration you can navigate to our
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[API reference pages](https://godoc.org/k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm#MasterConfiguration).
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{{% /capture %}}
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{{% capture body %}}
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## APIServer flags
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For details, see the [reference documentation for kube-apiserver](https://kubernetes.io/docs/reference/command-line-tools-reference/kube-apiserver/).
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Example usage:
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```yaml
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apiVersion: kubeadm.k8s.io/v1alpha2
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kind: MasterConfiguration
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kubernetesVersion: v1.11.0
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metadata:
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name: 1.11-sample
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apiServerExtraArgs:
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advertise-address: 192.168.0.103
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anonymous-auth: false
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enable-admission-plugins: AlwaysPullImages,DefaultStorageClass
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audit-log-path: /home/johndoe/audit.log
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```
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## ControllerManager flags
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For details, see the [reference documentation for kube-controller-manager](https://kubernetes.io/docs/reference/command-line-tools-reference/kube-controller-manager/).
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Example usage:
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```yaml
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apiVersion: kubeadm.k8s.io/v1alpha2
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kind: MasterConfiguration
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kubernetesVersion: v1.11.0
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metadata:
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name: 1.11-sample
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controllerManagerExtraArgs:
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cluster-signing-key-file: /home/johndoe/keys/ca.key
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bind-address: 0.0.0.0
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deployment-controller-sync-period: 50
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```
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## Scheduler flags
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For details, see the [reference documentation for kube-scheduler](https://kubernetes.io/docs/reference/command-line-tools-reference/kube-scheduler/).
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Example usage:
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```yaml
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apiVersion: kubeadm.k8s.io/v1alpha2
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kind: MasterConfiguration
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kubernetesVersion: v1.11.0
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metadata:
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name: 1.11-sample
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schedulerExtraArgs:
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address: 0.0.0.0
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config: /home/johndoe/schedconfig.yaml
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kubeconfig: /home/johndoe/kubeconfig.yaml
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```
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{{% /capture %}}
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