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Wait for apiserver to be health, not just running

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This commit is contained in:
Darren Shepherd 2019-11-09 06:07:12 +00:00
parent b3336f69cf
commit 29b270dce6
1 changed files with 17 additions and 17 deletions
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34
pkg/daemons/control/server.go
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@ -31,9 +31,10 @@ import (
"github.com/sirupsen/logrus"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apiserver/pkg/authentication/authenticator"
"k8s.io/client-go/discovery"
"k8s.io/client-go/kubernetes"
"k8s.io/client-go/tools/clientcmd"
ccmapp "k8s.io/kubernetes/cmd/cloud-controller-manager/app"
app2 "k8s.io/kubernetes/cmd/controller-manager/app"
"k8s.io/kubernetes/cmd/kube-apiserver/app"
cmapp "k8s.io/kubernetes/cmd/kube-controller-manager/app"
sapp "k8s.io/kubernetes/cmd/kube-scheduler/app"
@ -858,25 +859,24 @@ func waitForAPIServer(ctx context.Context, runtime *config.ControlRuntime) error
return err
}
discoveryclient, err := discovery.NewDiscoveryClientForConfig(restConfig)
k8sClient, err := kubernetes.NewForConfig(restConfig)
if err != nil {
return err
}
for i := 0; i < 60; i++ {
info, err := discoveryclient.ServerVersion()
if err == nil {
logrus.Infof("apiserver %s is up and running", info)
return nil
}
logrus.Infof("waiting for apiserver to become available")
select {
case <-ctx.Done():
return ctx.Err()
case <-time.After(time.Second):
continue
}
select {
case <-ctx.Done():
return ctx.Err()
case err := <-promise(func() error { return app2.WaitForAPIServer(k8sClient, 5*time.Minute) }):
return err
}
return fmt.Errorf("timeout waiting for apiserver")
}
func promise(f func() error) <-chan error {
c := make(chan error, 1)
go func() {
c <- f()
close(c)
}()
return c
}