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config.go
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config.go
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/*
Copyright 2019 The KubeOne Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package cmd
import (
"bytes"
_ "embed"
"fmt"
"os"
"strconv"
"strings"
"text/template"
"github.com/MakeNowJust/heredoc/v2"
"github.com/pkg/errors"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
yaml "gopkg.in/yaml.v2"
"k8c.io/kubeone/pkg/apis/kubeone/config"
kubeonev1beta3 "k8c.io/kubeone/pkg/apis/kubeone/v1beta3"
"k8c.io/kubeone/pkg/containerruntime"
"k8c.io/kubeone/pkg/fail"
"k8c.io/kubeone/pkg/templates/machinecontroller"
"k8c.io/kubeone/pkg/yamled"
kyaml "sigs.k8s.io/yaml"
)
const (
// defaultCloudProviderName is cloud provider to build the example configuration file for
defaultCloudProviderName = "aws"
)
//go:embed example-manifest.tmpl.yaml
var exampleManifest string
type printOpts struct {
FullConfig bool `longflag:"full" shortflag:"f"`
ClusterName string `longflag:"cluster-name" shortflag:"n"`
KubernetesVersion string `longflag:"kubernetes-version" shortflag:"k"`
CloudProviderName string `longflag:"provider" shortflag:"p"`
CloudProviderExternal bool
CloudProviderCloudCfg string
ControlPlaneHosts string `longflag:"control-plane-hosts"`
APIEndpointHost string `longflag:"api-endpoint-host"`
APIEndpointPort int `longflag:"api-endpoint-port"`
APIEndpointAlternativeNames []string `longflag:"api-endpoint-alternative-names"`
PodSubnet string `longflag:"pod-subnet"`
ServiceSubnet string `longflag:"service-subnet"`
ServiceDNS string `longflag:"service-dns"`
NodePortRange string `longflag:"node-port-range"`
HTTPProxy string `longflag:"proxy-http"`
HTTPSProxy string `longflag:"proxy-https"`
NoProxy string `longflag:"proxy-no-proxy"`
EnablePodNodeSelector bool `longflag:"enable-pod-node-selector"`
EnablePodSecurityPolicy bool `longflag:"enable-pod-security-policy"` // TODO: remove in future release
EnableStaticAuditLog bool `longflag:"enable-static-audit-log"`
EnableDynamicAuditLog bool `longflag:"enable-dynamic-audit-log"`
EnableMetricsServer bool `longflag:"enable-metrics-server"`
EnableOpenIDConnect bool `longflag:"enable-openid-connect"`
EnableEncryptionProviders bool `longflag:"enable-encryption-providers"`
DeployMachineController bool `longflag:"deploy-machine-controller"`
ContainerLogMaxSize string `longflag:"container-log-max-size"`
ContainerLogMaxFiles int32 `longflag:"container-log-max-files"`
}
// configCmd setups the config command
func configCmd(rootFlags *pflag.FlagSet) *cobra.Command {
cmd := &cobra.Command{
Use: "config",
Short: "Commands for working with the KubeOneCluster configuration manifests",
}
cmd.AddCommand(configPrintCmd())
cmd.AddCommand(configDumpCmd(rootFlags))
cmd.AddCommand(configMigrateCmd(rootFlags))
cmd.AddCommand(configMachinedeploymentsCmd(rootFlags))
cmd.AddCommand(configImagesCmd(rootFlags))
return cmd
}
// configPrintCmd setups the print command
func configPrintCmd() *cobra.Command {
opts := &printOpts{}
cmd := &cobra.Command{
Use: "print",
Short: "Print an example configuration manifest",
Long: heredoc.Doc(`
Print an example configuration manifest. Using the appropriate flags you can
customize the configuration manifest. For the full reference of the
configuration manifest, run the print command with --full flag.
`),
Args: cobra.ExactArgs(0),
Example: fmt.Sprintf("kubeone config print --provider digitalocean --kubernetes-version %s --cluster-name example", defaultKubeVersion),
SilenceErrors: true,
RunE: func(_ *cobra.Command, _ []string) error {
return runPrint(opts)
},
}
// General
cmd.Flags().BoolVarP(
&opts.FullConfig,
longFlagName(opts, "FullConfig"),
shortFlagName(opts, "FullConfig"),
false,
"show full manifest")
cmd.Flags().StringVarP(
&opts.ClusterName,
longFlagName(opts, "ClusterName"),
shortFlagName(opts, "ClusterName"),
"demo-cluster",
"cluster name")
cmd.Flags().StringVarP(
&opts.KubernetesVersion,
longFlagName(opts, "KubernetesVersion"),
shortFlagName(opts, "KubernetesVersion"),
defaultKubeVersion,
"Kubernetes version")
cmd.Flags().StringVarP(
&opts.CloudProviderName,
longFlagName(opts, "CloudProviderName"),
shortFlagName(opts, "CloudProviderName"),
defaultCloudProviderName,
"cloud provider name (aws, digitalocean, gce, hetzner, equinixmetal, openstack, vsphere, none)")
// Hosts
cmd.Flags().StringVar(&opts.ControlPlaneHosts, longFlagName(opts, "ControlPlaneHosts"), "", "control plane hosts in format of comma-separated key:value list, example: publicAddress:192.168.0.100,privateAddress:192.168.1.100,sshUsername:ubuntu,sshPort:22. Use quoted string of space separated values for multiple hosts")
// API endpoint
cmd.Flags().StringVar(&opts.APIEndpointHost, longFlagName(opts, "APIEndpointHost"), "", "API endpoint hostname or address")
cmd.Flags().IntVar(&opts.APIEndpointPort, longFlagName(opts, "APIEndpointPort"), 6443, "API endpoint port")
cmd.Flags().StringSliceVar(&opts.APIEndpointAlternativeNames, longFlagName(opts, "APIEndpointAlternativeNames"), []string{}, "Comma separated list of API endpoint alternative names, example: host.com,192.16.0.100")
// Cluster networking
cmd.Flags().StringVar(&opts.PodSubnet, longFlagName(opts, "PodSubnet"), "", "Subnet to be used for pods networking")
cmd.Flags().StringVar(&opts.ServiceSubnet, longFlagName(opts, "ServiceSubnet"), "", "Subnet to be used for Services")
cmd.Flags().StringVar(&opts.ServiceDNS, longFlagName(opts, "ServiceDNS"), "", "Domain name to be used for Services")
cmd.Flags().StringVar(&opts.NodePortRange, longFlagName(opts, "NodePortRange"), "", "Port range to be used for NodePort")
// Proxy
cmd.Flags().StringVar(&opts.HTTPProxy, longFlagName(opts, "HTTPProxy"), "", "HTTP proxy to be used for provisioning and Docker")
cmd.Flags().StringVar(&opts.HTTPSProxy, longFlagName(opts, "HTTPSProxy"), "", "HTTPs proxy to be used for provisioning and Docker")
cmd.Flags().StringVar(&opts.NoProxy, longFlagName(opts, "NoProxy"), "", "No Proxy to be used for provisioning and Docker")
// Features
cmd.Flags().BoolVar(&opts.EnablePodNodeSelector, longFlagName(opts, "EnablePodNodeSelector"), false, "enable PodNodeSelector admission plugin")
cmd.Flags().BoolVar(&opts.EnablePodSecurityPolicy, longFlagName(opts, "EnablePodSecurityPolicy"), false, "enable PodSecurityPolicy. NO-OP: this feature is removed")
cmd.Flags().BoolVar(&opts.EnableStaticAuditLog, longFlagName(opts, "EnableStaticAuditLog"), false, "enable StaticAuditLog")
cmd.Flags().BoolVar(&opts.EnableDynamicAuditLog, longFlagName(opts, "EnableDynamicAuditLog"), false, "enable DynamicAuditLog")
cmd.Flags().BoolVar(&opts.EnableMetricsServer, longFlagName(opts, "EnableMetricsServer"), true, "enable metrics-server")
cmd.Flags().BoolVar(&opts.EnableOpenIDConnect, longFlagName(opts, "EnableOpenIDConnect"), false, "enable OpenID Connect authentication")
cmd.Flags().BoolVar(&opts.EnableEncryptionProviders, longFlagName(opts, "EnableEncryptionProviders"), false, "enable Encryption Providers")
// MachineController
cmd.Flags().BoolVar(&opts.DeployMachineController, longFlagName(opts, "DeployMachineController"), true, "deploy kubermatic machine-controller")
// LoggingConfig
cmd.Flags().StringVar(
&opts.ContainerLogMaxSize,
longFlagName(opts, "ContainerLogMaxSize"),
containerruntime.DefaultContainerLogMaxSize,
"ContainerLogMaxSize")
cmd.Flags().Int32Var(
&opts.ContainerLogMaxFiles,
longFlagName(opts, "ContainerLogMaxFiles"),
containerruntime.DefaultContainerLogMaxFiles,
"ContainerLogMaxFiles")
return cmd
}
// configMigrateCmd setups the migrate command
func configMigrateCmd(rootFlags *pflag.FlagSet) *cobra.Command {
cmd := &cobra.Command{
Use: "migrate",
Short: "Migrate the v1beta2 KubeOneCluster manifest to the v1beta3 version",
Long: `
Migrate the v1beta2 KubeOneCluster manifest to the v1beta3 version.
The v1beta2 version of the KubeOneCluster manifest is deprecated and will be
removed in one of the next versions.
The new manifest is printed on the standard output.
`,
Args: cobra.ExactArgs(0),
Example: `kubeone config migrate --manifest mycluster.yaml`,
SilenceErrors: true,
RunE: func(_ *cobra.Command, _ []string) error {
gopts, err := persistentGlobalOptions(rootFlags)
if err != nil {
return err
}
return runMigrate(gopts)
},
}
return cmd
}
// configMachinedeploymentsCmd setups the machinedeployments command
func configMachinedeploymentsCmd(rootFlags *pflag.FlagSet) *cobra.Command {
cmd := &cobra.Command{
Use: "machinedeployments",
Short: "Print the manifest for creating MachineDeployments",
Long: `
Print the manifest for creating MachineDeployment objects.
The manifest contains all MachineDeployments defined in the API/config.
Note that manifest may include already created MachineDeployments.
The manifest is printed on the standard output.
`,
Args: cobra.ExactArgs(0),
Example: `kubeone config machinedeployments --manifest mycluster.yaml`,
SilenceErrors: true,
RunE: func(_ *cobra.Command, _ []string) error {
gopts, err := persistentGlobalOptions(rootFlags)
if err != nil {
return err
}
return runGenerateMachineDeployments(gopts)
},
}
return cmd
}
// runPrint prints an example configuration file
func runPrint(printOptions *printOpts) error {
if printOptions.FullConfig {
switch printOptions.CloudProviderName {
case "digitalocean", "equinixmetal", "hetzner":
printOptions.CloudProviderExternal = true
case "openstack":
printOptions.CloudProviderCloudCfg = "<< cloudConfig is required for OpenStack >>"
case "vsphere":
printOptions.CloudProviderCloudCfg = "<< cloudConfig is required for vSphere >>"
case "azure":
printOptions.CloudProviderCloudCfg = "<< cloudConfig is required for Azure >>"
}
tmpl, err := template.New("example-manifest").Parse(exampleManifest)
if err != nil {
return fail.Runtime(err, "parsing example-manifest template")
}
var buffer bytes.Buffer
err = tmpl.Execute(&buffer, printOptions)
if err != nil {
return fail.Runtime(err, "executing example-manifest template")
}
cfg := kubeonev1beta3.NewKubeOneCluster()
err = kyaml.UnmarshalStrict(buffer.Bytes(), &cfg)
if err != nil {
return fail.Runtime(err, "testing marshal/unmarshal")
}
fmt.Println(buffer.String())
return nil
}
return createAndPrintManifest(printOptions)
}
func createAndPrintManifest(printOptions *printOpts) error {
cfg := &yamled.Document{}
// API data
cfg.Set(yamled.Path{"apiVersion"}, "kubeone.k8c.io/v1beta2")
cfg.Set(yamled.Path{"kind"}, "KubeOneCluster")
// Cluster name
if printOptions.ClusterName != "" {
cfg.Set(yamled.Path{"name"}, printOptions.ClusterName)
}
// Version
cfg.Set(yamled.Path{"versions", "kubernetes"}, printOptions.KubernetesVersion)
// Provider
var providerVal struct{}
switch printOptions.CloudProviderName {
case "aws":
cfg.Set(yamled.Path{"cloudProvider", "aws"}, providerVal)
case "azure":
cfg.Set(yamled.Path{"cloudProvider", "azure"}, providerVal)
cfg.Set(yamled.Path{"cloudProvider", "cloudConfig"}, "<< cloudConfig is required for Azure >>\n")
case "digitalocean":
cfg.Set(yamled.Path{"cloudProvider", "digitalocean"}, providerVal)
cfg.Set(yamled.Path{"cloudProvider", "external"}, true)
case "gce":
cfg.Set(yamled.Path{"cloudProvider", "gce"}, providerVal)
case "hetzner":
cfg.Set(yamled.Path{"cloudProvider", "hetzner"}, providerVal)
cfg.Set(yamled.Path{"cloudProvider", "external"}, true)
case "openstack":
cfg.Set(yamled.Path{"cloudProvider", "openstack"}, providerVal)
cfg.Set(yamled.Path{"cloudProvider", "cloudConfig"}, "<< cloudConfig is required for OpenStack >>\n")
case "equinixmetal":
cfg.Set(yamled.Path{"cloudProvider", "equinixmetal"}, providerVal)
cfg.Set(yamled.Path{"cloudProvider", "external"}, true)
case "vmwareCloudDirector":
cfg.Set(yamled.Path{"cloudProvider", "vmwareCloudDirector"}, providerVal)
cfg.Set(yamled.Path{"cloudProvider", "external"}, true)
case "vsphere":
cfg.Set(yamled.Path{"cloudProvider", "vsphere"}, providerVal)
cfg.Set(yamled.Path{"cloudProvider", "cloudConfig"}, "<< cloudConfig is required for vSphere >>\n")
case "none":
cfg.Set(yamled.Path{"cloudProvider", "none"}, providerVal)
}
// Hosts
if len(printOptions.ControlPlaneHosts) != 0 {
if err := parseControlPlaneHosts(cfg, printOptions.ControlPlaneHosts); err != nil {
return err
}
}
// API endpoint
if len(printOptions.APIEndpointHost) != 0 {
cfg.Set(yamled.Path{"apiEndpoint", "host"}, printOptions.APIEndpointHost)
}
if printOptions.APIEndpointPort != 0 {
cfg.Set(yamled.Path{"apiEndpoint", "port"}, printOptions.APIEndpointPort)
}
if len(printOptions.APIEndpointAlternativeNames) > 0 {
cfg.Set(yamled.Path{"apiEndpoint", "alternativeNames"}, printOptions.APIEndpointAlternativeNames)
}
// Cluster networking
if len(printOptions.PodSubnet) != 0 {
cfg.Set(yamled.Path{"clusterNetwork", "podSubnet"}, printOptions.PodSubnet)
}
if len(printOptions.ServiceSubnet) != 0 {
cfg.Set(yamled.Path{"clusterNetwork", "serviceSubnet"}, printOptions.ServiceSubnet)
}
if len(printOptions.ServiceDNS) != 0 {
cfg.Set(yamled.Path{"clusterNetwork", "serviceDomainName"}, printOptions.ServiceDNS)
}
if len(printOptions.NodePortRange) != 0 {
cfg.Set(yamled.Path{"clusterNetwork", "nodePortRange"}, printOptions.NodePortRange)
}
// Proxy
if len(printOptions.HTTPProxy) != 0 {
cfg.Set(yamled.Path{"proxy", "http"}, printOptions.HTTPProxy)
}
if len(printOptions.HTTPSProxy) != 0 {
cfg.Set(yamled.Path{"proxy", "https"}, printOptions.HTTPSProxy)
}
if len(printOptions.NoProxy) != 0 {
cfg.Set(yamled.Path{"proxy", "noProxy"}, printOptions.NoProxy)
}
// Features
printFeatures(cfg, printOptions)
// machine-controller
if !printOptions.DeployMachineController {
cfg.Set(yamled.Path{"machineController", "deploy"}, printOptions.DeployMachineController)
}
// Logging configuration
cfg.Set(yamled.Path{"loggingConfig", "containerLogMaxSize"}, printOptions.ContainerLogMaxSize)
cfg.Set(yamled.Path{"loggingConfig", "containerLogMaxFiles"}, printOptions.ContainerLogMaxFiles)
// Print the manifest
return validateAndPrintConfig(cfg)
}
func printFeatures(cfg *yamled.Document, printOptions *printOpts) {
if printOptions.EnablePodNodeSelector {
cfg.Set(yamled.Path{"features", "podNodeSelector", "enable"}, printOptions.EnablePodNodeSelector)
cfg.Set(yamled.Path{"features", "podNodeSelector", "config", "configFilePath"}, "")
}
if printOptions.EnableDynamicAuditLog {
cfg.Set(yamled.Path{"features", "dynamicAuditLog", "enable"}, printOptions.EnableDynamicAuditLog)
}
if !printOptions.EnableMetricsServer {
cfg.Set(yamled.Path{"features", "metricsServer", "enable"}, printOptions.EnableMetricsServer)
}
if printOptions.EnableOpenIDConnect {
cfg.Set(yamled.Path{"features", "openidConnect", "enable"}, printOptions.EnableOpenIDConnect)
cfg.Set(yamled.Path{"features", "openidConnect", "config", "issuerUrl"}, "")
cfg.Set(yamled.Path{"features", "openidConnect", "config", "clientId"}, "")
cfg.Set(yamled.Path{"features", "openidConnect", "config", "usernameClaim"}, "")
cfg.Set(yamled.Path{"features", "openidConnect", "config", "usernamePrefix"}, "")
cfg.Set(yamled.Path{"features", "openidConnect", "config", "groupsClaim"}, "")
cfg.Set(yamled.Path{"features", "openidConnect", "config", "groupsPrefix"}, "")
cfg.Set(yamled.Path{"features", "openidConnect", "config", "signingAlgs"}, "")
cfg.Set(yamled.Path{"features", "openidConnect", "config", "requiredClaim"}, "")
cfg.Set(yamled.Path{"features", "openidConnect", "config", "caFile"}, "")
}
if printOptions.EnableEncryptionProviders {
cfg.Set(yamled.Path{"features", "encryptionProviders", "enable"}, printOptions.EnableEncryptionProviders)
}
}
func parseControlPlaneHosts(cfg *yamled.Document, hostList string) error {
hosts := strings.Split(hostList, " ")
for i, host := range hosts {
fields := strings.Split(host, ",")
h := make(map[string]interface{})
for _, field := range fields {
val := strings.Split(field, ":")
if len(val) != 2 {
return fail.RuntimeError{
Op: "parsing host variable",
Err: errors.New("incorrect format"),
}
}
if val[0] == "sshPort" {
portInt, err := strconv.Atoi(val[1])
if err != nil {
return fail.Runtime(err, "parsing sshPort")
}
h[val[0]] = portInt
continue
}
h[val[0]] = val[1]
}
cfg.Set(yamled.Path{"controlPlane", "hosts", i}, h)
}
return nil
}
// runMigrate migrates the KubeOneCluster manifest from v1alpha1 to v1beta1
func runMigrate(opts *globalOptions) error {
var (
tfOutput []byte
err error
)
if opts.TerraformState != "" {
tfOutput, err = config.TFOutput(opts.TerraformState)
if err != nil {
return err
}
}
v1beta3Manifest, err := config.MigrateV1beta2V1beta3(opts.ManifestFile, tfOutput)
if err != nil {
return err
}
fmt.Printf("%s\n", v1beta3Manifest)
return nil
}
// runGenerateMachineDeployments generates the MachineDeployments manifest
func runGenerateMachineDeployments(opts *globalOptions) error {
s, err := opts.BuildState()
if err != nil {
return err
}
manifest, err := machinecontroller.GenerateMachineDeploymentsManifest(s)
if err != nil {
return err
}
fmt.Println(manifest)
return nil
}
func validateAndPrintConfig(cfgYaml interface{}) error {
// Validate new config by unmarshaling
var buffer bytes.Buffer
err := yaml.NewEncoder(&buffer).Encode(cfgYaml)
if err != nil {
return fail.Runtime(err, "marshalling new config as YAML")
}
cfg := kubeonev1beta3.NewKubeOneCluster()
if err = kyaml.UnmarshalStrict(buffer.Bytes(), &cfg); err != nil {
return fail.Runtime(err, "testing marshal/unmarshal")
}
// Print new config yaml
if err = yaml.NewEncoder(os.Stdout).Encode(cfgYaml); err != nil {
return fail.Runtime(err, "marshalling new config as YAML")
}
return nil
}