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Fallback to known good stable version in case of network errors.

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Hardcoded known stable version will be returned if user
didn't request specific version and kubeadm for some reason
not able to fetch latest stable information from release servers.

For now, fallback version is v1.4.6
This commit is contained in:
Alexander Kanevskiy 2016-11-30 17:57:28 +02:00
parent 39f55cb4df
commit 6338b7fda0
2 changed files with 11 additions and 6 deletions
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11
cmd/kubeadm/app/apis/kubeadm/v1alpha1/defaults.go
View File

@ -21,11 +21,12 @@ import (
)
const (
DefaultServiceDNSDomain = "cluster.local"
DefaultServicesSubnet = "10.96.0.0/12"
DefaultKubernetesVersion = "stable"
DefaultAPIBindPort = 6443
DefaultDiscoveryBindPort = 9898
DefaultServiceDNSDomain = "cluster.local"
DefaultServicesSubnet = "10.96.0.0/12"
DefaultKubernetesVersion = "stable"
DefaultKubernetesFallbackVersion = "v1.4.6"
DefaultAPIBindPort = 6443
DefaultDiscoveryBindPort = 9898
)
func addDefaultingFuncs(scheme *runtime.Scheme) error {

6
cmd/kubeadm/app/cmd/init.go
View File

@ -196,7 +196,11 @@ func NewInit(cfgPath string, cfg *kubeadmapi.MasterConfiguration, skipPreFlight
// validate version argument
ver, err := kubeadmutil.KubernetesReleaseVersion(cfg.KubernetesVersion)
if err != nil {
return nil, err
if cfg.KubernetesVersion != kubeadmapiext.DefaultKubernetesVersion {
return nil, err
} else {
ver = kubeadmapiext.DefaultKubernetesFallbackVersion
}
}
cfg.KubernetesVersion = ver
fmt.Println("Using Kubernetes version:", ver)