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addons.go
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addons.go
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package cluster
import (
"fmt"
"time"
"github.com/rancher/rke/addons"
"github.com/rancher/rke/k8s"
"github.com/sirupsen/logrus"
)
const (
KubeDNSAddonResourceName = "rke-kubedns-addon"
UserAddonResourceName = "rke-user-addon"
)
func (c *Cluster) DeployK8sAddOns() error {
err := c.deployKubeDNS()
return err
}
func (c *Cluster) DeployUserAddOns() error {
logrus.Infof("[addons] Setting up user addons..")
if c.Addons == "" {
logrus.Infof("[addons] No user addons configured..")
return nil
}
if err := c.doAddonDeploy(c.Addons, UserAddonResourceName); err != nil {
return err
}
logrus.Infof("[addons] User addon deployed successfully..")
return nil
}
func (c *Cluster) deployKubeDNS() error {
logrus.Infof("[addons] Setting up KubeDNS")
kubeDNSYaml := addons.GetKubeDNSManifest(c.ClusterDNSServer, c.ClusterDomain)
if err := c.doAddonDeploy(kubeDNSYaml, KubeDNSAddonResourceName); err != nil {
return err
}
logrus.Infof("[addons] KubeDNS deployed successfully..")
return nil
}
func (c *Cluster) doAddonDeploy(addonYaml, resourceName string) error {
err := c.StoreAddonConfigMap(addonYaml, resourceName)
if err != nil {
return fmt.Errorf("Failed to save addon ConfigMap: %v", err)
}
logrus.Infof("[addons] Executing deploy job..")
addonJob := addons.GetAddonsExcuteJob(resourceName, c.ControlPlaneHosts[0].HostnameOverride, c.Services.KubeAPI.Image)
err = c.ApplySystemAddonExcuteJob(addonJob)
if err != nil {
return fmt.Errorf("Failed to deploy addon execute job: %v", err)
}
return nil
}
func (c *Cluster) StoreAddonConfigMap(addonYaml string, addonName string) error {
logrus.Infof("[addons] Saving addon ConfigMap to Kubernetes")
kubeClient, err := k8s.NewClient(c.LocalKubeConfigPath)
if err != nil {
return err
}
timeout := make(chan bool, 1)
go func() {
for {
err := k8s.UpdateConfigMap(kubeClient, []byte(addonYaml), addonName)
if err != nil {
time.Sleep(time.Second * 5)
fmt.Println(err)
continue
}
logrus.Infof("[addons] Successfully Saved addon to Kubernetes ConfigMap: %s", addonName)
timeout <- true
break
}
}()
select {
case <-timeout:
return nil
case <-time.After(time.Second * UpdateStateTimeout):
return fmt.Errorf("[addons] Timeout waiting for kubernetes to be ready")
}
}
func (c *Cluster) ApplySystemAddonExcuteJob(addonJob string) error {
if err := k8s.ApplyK8sSystemJob(addonJob, c.LocalKubeConfigPath); err != nil {
fmt.Println(err)
return err
}
return nil
}