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Merge pull request #8804 from medyagh/hot_upgrade_fix 

Stop kube-system containers before applying configuration updates
pull/8818/head
Medya Ghazizadeh 2020-07-23 10:03:54 -07:00 committed by GitHub
parent f9bac2a0aa 44b6703e68
commit f230ca0c55
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1 changed files with 24 additions and 0 deletions
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24
pkg/minikube/bootstrapper/kubeadm/kubeadm.go
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@ -554,6 +554,9 @@ func (k *Bootstrapper) restartControlPlane(cfg config.ClusterConfig) error {
return nil
}
if err := k.stopKubeSystem(cfg); err != nil {
glog.Warningf("Failed to stop kube-system containers: port conflicts may arise: %v", err)
}
if err := k.clearStaleConfigs(cfg); err != nil {
return errors.Wrap(err, "clearing stale configs")
}
@ -905,6 +908,27 @@ func (k *Bootstrapper) elevateKubeSystemPrivileges(cfg config.ClusterConfig) err
return nil
}
// stopKubeSystem stops all the containers in the kube-system to prevent #8740 when doing hot upgrade
func (k *Bootstrapper) stopKubeSystem(cfg config.ClusterConfig) error {
glog.Info("stopping kube-system containers ...")
cr, err := cruntime.New(cruntime.Config{Type: cfg.KubernetesConfig.ContainerRuntime, Runner: k.c})
if err != nil {
return errors.Wrap(err, "new cruntime")
}
ids, err := cr.ListContainers(cruntime.ListOptions{Namespaces: []string{"kube-system"}})
if err != nil {
return errors.Wrap(err, "list")
}
if len(ids) > 0 {
if err := cr.StopContainers(ids); err != nil {
return errors.Wrap(err, "stop")
}
}
return nil
}
// adviseNodePressure will advise the user what to do with difference pressure errors based on their environment
func adviseNodePressure(err error, name string, drv string) {
if diskErr, ok := err.(*kverify.ErrDiskPressure); ok {