在kubernetes client-go中使用kubectl上下文 [英] Use kubectl context in kubernetes client-go
问题描述
如何使用普通上下文配置kubernetes client-go?
How can I use a normal context to configure the kubernetes client-go?
package kube
import (
"fmt"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/rest"
"k8s.io/client-go/tools/clientcmd"
)
// GetKubeClient creates a Kubernetes config and client for a given kubeconfig context.
func GetKubeClient(context string) (*rest.Config, kubernetes.Interface, error) {
config, err := configForContext(context)
if err != nil {
return nil, nil, err
}
client, err := kubernetes.NewForConfig(config)
if err != nil {
return nil, nil, fmt.Errorf("could not get Kubernetes client: %s", err)
}
return config, client, nil
}
// configForContext creates a Kubernetes REST client configuration for a given kubeconfig context.
func configForContext(context string) (*rest.Config, error) {
config, err := getConfig(context).ClientConfig()
if err != nil {
return nil, fmt.Errorf("could not get Kubernetes config for context %q: %s", context, err)
}
return config, nil
}
// getConfig returns a Kubernetes client config for a given context.
func getConfig(context string) clientcmd.ClientConfig {
rules := clientcmd.NewDefaultClientConfigLoadingRules()
rules.DefaultClientConfig = &clientcmd.DefaultClientConfig
overrides := &clientcmd.ConfigOverrides{ClusterDefaults: clientcmd.ClusterDefaults}
if context != "" {
overrides.CurrentContext = context
}
return clientcmd.NewNonInteractiveDeferredLoadingClientConfig(rules, overrides)
}
如果我尝试使用此代码(从掌舵获得),则说明api服务器设置不正确,客户端希望连接到默认主机localhost:8080
.
If I try this code (got it from helm), the api server is not correctly set and the client wants to connect to the default host localhost:8080
.
推荐答案
发现了问题. github.com/imdario/mergo
的实现在较新的版本中进行了更改,并破坏了生成客户端配置的实际行为.因此,仅像在官方kubernetes cient-go存储库中那样使用修订版6633656539c1639d9d78127b7d47c622b5d7b6dc
.
Found the problem. The implementation of github.com/imdario/mergo
changed in a newer version and breaks the actual behavior of generating the client config. So just only use revision 6633656539c1639d9d78127b7d47c622b5d7b6dc
like in the official kubernetes cient-go repository.
https://github.com/kubernetes/client-go/issues/415
这篇关于在kubernetes client-go中使用kubectl上下文的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!