Hongzhi
82 lines
2.2 KiB
Markdown
82 lines
2.2 KiB
Markdown
---
|
|
reviewers:
|
|
- sig-cluster-lifecycle
|
|
title: Customizing control plane configuration with kubeadm
|
|
content_template: templates/concept
|
|
weight: 40
|
|
---
|
|
|
|
{{% capture overview %}}
|
|
|
|
The kubeadm configuration exposes the following fields that can override the default flags passed to control plane components such as the APIServer, ControllerManager and Scheduler:
|
|
|
|
- `APIServerExtraArgs`
|
|
- `ControllerManagerExtraArgs`
|
|
- `SchedulerExtraArgs`
|
|
|
|
These fields consist of `key: value` pairs. To override a flag for a control plane component:
|
|
|
|
1. Add the appropriate field to your configuration.
|
|
2. Add the flags to override to the field.
|
|
|
|
For more details on each field in the configuration you can navigate to our
|
|
[API reference pages](https://godoc.org/k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm#ClusterConfiguration).
|
|
|
|
{{% /capture %}}
|
|
|
|
{{% capture body %}}
|
|
|
|
## APIServer flags
|
|
|
|
For details, see the [reference documentation for kube-apiserver](/docs/reference/command-line-tools-reference/kube-apiserver/).
|
|
|
|
Example usage:
|
|
```yaml
|
|
apiVersion: kubeadm.k8s.io/v1alpha3
|
|
kind: ClusterConfiguration
|
|
kubernetesVersion: v1.12.0
|
|
metadata:
|
|
name: 1.12-sample
|
|
apiServerExtraArgs:
|
|
advertise-address: 192.168.0.103
|
|
anonymous-auth: false
|
|
enable-admission-plugins: AlwaysPullImages,DefaultStorageClass
|
|
audit-log-path: /home/johndoe/audit.log
|
|
```
|
|
|
|
## ControllerManager flags
|
|
|
|
For details, see the [reference documentation for kube-controller-manager](/docs/reference/command-line-tools-reference/kube-controller-manager/).
|
|
|
|
Example usage:
|
|
```yaml
|
|
apiVersion: kubeadm.k8s.io/v1alpha3
|
|
kind: ClusterConfiguration
|
|
kubernetesVersion: v1.12.0
|
|
metadata:
|
|
name: 1.12-sample
|
|
controllerManagerExtraArgs:
|
|
cluster-signing-key-file: /home/johndoe/keys/ca.key
|
|
bind-address: 0.0.0.0
|
|
deployment-controller-sync-period: 50
|
|
```
|
|
|
|
## Scheduler flags
|
|
|
|
For details, see the [reference documentation for kube-scheduler](/docs/reference/command-line-tools-reference/kube-scheduler/).
|
|
|
|
Example usage:
|
|
```yaml
|
|
apiVersion: kubeadm.k8s.io/v1alpha3
|
|
kind: ClusterConfiguration
|
|
kubernetesVersion: v1.12.0
|
|
metadata:
|
|
name: 1.12-sample
|
|
schedulerExtraArgs:
|
|
address: 0.0.0.0
|
|
config: /home/johndoe/schedconfig.yaml
|
|
kubeconfig: /home/johndoe/kubeconfig.yaml
|
|
```
|
|
|
|
{{% /capture %}}
|