mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-11-04 07:49:35 +00:00
56 lines
1.6 KiB
Go
56 lines
1.6 KiB
Go
/*
|
|
Copyright 2018 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package app
|
|
|
|
import (
|
|
"fmt"
|
|
"net/http"
|
|
"time"
|
|
|
|
"github.com/golang/glog"
|
|
"k8s.io/apimachinery/pkg/util/wait"
|
|
clientset "k8s.io/client-go/kubernetes"
|
|
)
|
|
|
|
// WaitForAPIServer waits for the API Server's /healthz endpoint to report "ok" with timeout.
|
|
func WaitForAPIServer(client clientset.Interface, timeout time.Duration) error {
|
|
var lastErr error
|
|
|
|
err := wait.PollImmediate(time.Second, timeout, func() (bool, error) {
|
|
healthStatus := 0
|
|
result := client.Discovery().RESTClient().Get().AbsPath("/healthz").Do().StatusCode(&healthStatus)
|
|
if result.Error() != nil {
|
|
lastErr = fmt.Errorf("failed to get apiserver /healthz status: %v", result.Error())
|
|
return false, nil
|
|
}
|
|
if healthStatus != http.StatusOK {
|
|
content, _ := result.Raw()
|
|
lastErr = fmt.Errorf("APIServer isn't healthy: %v", string(content))
|
|
glog.Warningf("APIServer isn't healthy yet: %v. Waiting a little while.", string(content))
|
|
return false, nil
|
|
}
|
|
|
|
return true, nil
|
|
})
|
|
|
|
if err != nil {
|
|
return fmt.Errorf("%v: %v", err, lastErr)
|
|
}
|
|
|
|
return nil
|
|
}
|