func runCmdValidate(cmd *cobra.Command, args []string) error {
cfg, err := config.ClusterFromFile(configPath)
if err != nil {
return fmt.Errorf("Unable to load cluster config: %v", err)
}
fmt.Printf("Validating UserData...\n")
if err := cfg.ValidateUserData(stackTemplateOptions); err != nil {
return err
}
fmt.Printf("UserData is valid.\n\n")
fmt.Printf("Validating stack template...\n")
data, err := cfg.RenderStackTemplate(stackTemplateOptions)
if err != nil {
return fmt.Errorf("Failed to render stack template: %v", err)
}
cluster := cluster.New(cfg, validateOpts.awsDebug)
report, err := cluster.ValidateStack(string(data))
if report != "" {
fmt.Fprintf(os.Stderr, "Validation Report: %s\n", report)
}
if err != nil {
return err
}
fmt.Printf("stack template is valid.\n\n")
fmt.Printf("Validation OK!\n")
return nil
}
func runCmdUp(cmd *cobra.Command, args []string) error {
conf, err := config.ClusterFromFile(configPath)
if err != nil {
return fmt.Errorf("Failed to read cluster config: %v", err)
}
if err := conf.ValidateUserData(stackTemplateOptions); err != nil {
return err
}
data, err := conf.RenderStackTemplate(stackTemplateOptions)
if err != nil {
return fmt.Errorf("Failed to render stack template: %v", err)
}
if upOpts.export {
templatePath := fmt.Sprintf("%s.stack-template.json", conf.ClusterName)
fmt.Printf("Exporting %s\n", templatePath)
if err := ioutil.WriteFile(templatePath, data, 0600); err != nil {
return fmt.Errorf("Error writing %s : %v", templatePath, err)
}
if conf.KMSKeyARN == "" {
fmt.Printf("BEWARE: %s contains your TLS secrets!\n", templatePath)
}
return nil
}
cluster := cluster.New(conf, upOpts.awsDebug)
if upOpts.update {
report, err := cluster.Update(string(data))
if err != nil {
return fmt.Errorf("Error updating cluster: %v", err)
}
if report != "" {
fmt.Printf("Update stack: %s\n", report)
}
} else {
fmt.Printf("Creating AWS resources. This should take around 5 minutes.\n")
if err := cluster.Create(string(data)); err != nil {
return fmt.Errorf("Error creating cluster: %v", err)
}
}
info, err := cluster.Info()
if err != nil {
return fmt.Errorf("Failed fetching cluster info: %v", err)
}
successMsg :=
`Success! Your AWS resources have been created:
%s
The containers that power your cluster are now being dowloaded.
You should be able to access the Kubernetes API once the containers finish downloading.
`
fmt.Printf(successMsg, info.String())
return nil
}
func runCmdStatus(cmd *cobra.Command, args []string) error {
conf, err := config.ClusterFromFile(configPath)
if err != nil {
return fmt.Errorf("Failed to read cluster config: %v", err)
}
info, err := cluster.New(conf, false).Info()
if err != nil {
return fmt.Errorf("Failed fetching cluster info: %v", err)
}
fmt.Print(info.String())
return nil
}
func runCmdDestroy(cmd *cobra.Command, args []string) error {
cfg, err := config.ClusterFromFile(configPath)
if err != nil {
return fmt.Errorf("Error parsing config: %v", err)
}
c := cluster.New(cfg, destroyOpts.awsDebug)
if err := c.Destroy(); err != nil {
return fmt.Errorf("Failed destroying cluster: %v", err)
}
fmt.Println("CloudFormation stack is being destroyed. This will take several minutes")
return nil
}
func runCmdDestroy(cmd *cobra.Command, args []string) error {
cfg, err := config.ClusterFromFile(configPath)
if err != nil {
return fmt.Errorf("Error parsing config: %v", err)
}
c := cluster.New(cfg, destroyOpts.awsDebug)
if err := c.Destroy(); err != nil {
return fmt.Errorf("Failed destroying cluster: %v", err)
}
fmt.Println("Destroyed cluster")
return nil
}
func runCmdUp(cmd *cobra.Command, args []string) error {
conf, err := config.ClusterFromFile(configPath)
if err != nil {
return fmt.Errorf("Failed to read cluster config: %v", err)
}
data, err := conf.RenderStackTemplate(stackTemplateOptions)
if err != nil {
return fmt.Errorf("Failed to render stack template: %v", err)
}
if upOpts.export {
templatePath := fmt.Sprintf("%s.stack-template.json", conf.ClusterName)
fmt.Printf("Exporting %s\n", templatePath)
if err := ioutil.WriteFile(templatePath, data, 0600); err != nil {
return fmt.Errorf("Error writing %s : %v", templatePath, err)
}
if conf.KMSKeyARN == "" {
fmt.Printf("BEWARE: %s contains your TLS secrets!\n", templatePath)
}
return nil
}
cluster := cluster.New(conf, upOpts.awsDebug)
if upOpts.update {
report, err := cluster.Update(string(data))
if err != nil {
return fmt.Errorf("Error updating cluster: %v", err)
}
if report != "" {
fmt.Printf("Update stack: %s\n", report)
}
} else {
if err := cluster.Create(string(data)); err != nil {
return fmt.Errorf("Error creating cluster: %v", err)
}
}
info, err := cluster.Info()
if err != nil {
return fmt.Errorf("Failed fetching cluster info: %v", err)
}
fmt.Print(info.String())
return nil
}
func runCmdRender(cmd *cobra.Command, args []string) error {
// Read the config from file.
cluster, err := config.ClusterFromFile(configPath)
if err != nil {
return fmt.Errorf("Failed to read cluster config: %v", err)
}
// Generate default TLS assets.
assets, err := cluster.NewTLSAssets()
if err != nil {
return fmt.Errorf("Error generating default assets: %v", err)
}
if err := os.Mkdir("credentials", 0700); err != nil {
return err
}
if err := assets.WriteToDir("./credentials"); err != nil {
return fmt.Errorf("Error create assets: %v", err)
}
// Create a Config and attempt to render a kubeconfig for it.
cfg, err := cluster.Config()
if err != nil {
return fmt.Errorf("Failed to create config: %v", err)
}
tmpl, err := template.New("kubeconfig.yaml").Parse(string(config.KubeConfigTemplate))
if err != nil {
return fmt.Errorf("Failed to parse default kubeconfig template: %v", err)
}
var kubeconfig bytes.Buffer
if err := tmpl.Execute(&kubeconfig, cfg); err != nil {
return fmt.Errorf("Failed to render kubeconfig: %v", err)
}
// Write all assets to disk.
userdataDir := "userdata"
if err := os.Mkdir(userdataDir, 0755); err != nil {
return err
}
files := []struct {
name string
data []byte
mode os.FileMode
}{
{"credentials/.gitignore", []byte("*"), 0644},
{"userdata/cloud-config-controller", config.CloudConfigController, 0644},
{"userdata/cloud-config-worker", config.CloudConfigWorker, 0644},
{"stack-template.json", config.StackTemplateTemplate, 0644},
{"kubeconfig", kubeconfig.Bytes(), 0600},
}
for _, file := range files {
if err := ioutil.WriteFile(file.name, file.data, file.mode); err != nil {
return err
}
}
successMsg :=
`Success! Stack rendered to stack-template.json.
Next steps:
1. (Optional) Validate your changes to %s with "kube-aws validate"
2. (Optional) Further customize the cluster by modifying stack-template.json or files in ./userdata.
3. Start the cluster with "kube-aws up".
`
fmt.Printf(successMsg, configPath)
return nil
}