Golang util.CheckErr函数代码示例

// NewCmdJoin returns "kubeadm join" command.
func NewCmdJoin(out io.Writer) *cobra.Command {
	cfg := &kubeadmapi.NodeConfiguration{}
	var skipPreFlight bool
	var cfgPath string
	cmd := &cobra.Command{
		Use:   "join",
		Short: "Run this on any machine you wish to join an existing cluster.",
		Run: func(cmd *cobra.Command, args []string) {
			j, err := NewJoin(cfgPath, args, cfg, skipPreFlight)
			kubeadmutil.CheckErr(err)
			kubeadmutil.CheckErr(j.Run(out))
		},
	}

	cmd.PersistentFlags().StringVar(
		&cfg.Secrets.GivenToken, "token", "",
		"(required) Shared secret used to secure bootstrap. Must match the output of 'kubeadm init'",
	)

	cmd.PersistentFlags().StringVar(&cfgPath, "config", "", "Path to kubeadm config file")

	cmd.PersistentFlags().BoolVar(
		&skipPreFlight, "skip-preflight-checks", false,
		"skip preflight checks normally run before modifying the system",
	)

	return cmd
}

// NewCmdJoin returns "kubeadm join" command.
func NewCmdJoin(out io.Writer) *cobra.Command {
	versioned := &kubeadmapiext.NodeConfiguration{}
	api.Scheme.Default(versioned)
	cfg := kubeadmapi.NodeConfiguration{}
	api.Scheme.Convert(versioned, &cfg, nil)

	var skipPreFlight bool
	var cfgPath string

	cmd := &cobra.Command{
		Use:   "join <master address>",
		Short: "Run this on any machine you wish to join an existing cluster",
		Run: func(cmd *cobra.Command, args []string) {
			j, err := NewJoin(cfgPath, args, &cfg, skipPreFlight)
			kubeadmutil.CheckErr(err)
			kubeadmutil.CheckErr(j.Validate())
			kubeadmutil.CheckErr(j.Run(out))
		},
	}

	cmd.PersistentFlags().StringVar(&cfgPath, "config", cfgPath, "Path to kubeadm config file")

	cmd.PersistentFlags().BoolVar(
		&skipPreFlight, "skip-preflight-checks", false,
		"skip preflight checks normally run before modifying the system",
	)

	cmd.PersistentFlags().Var(
		discovery.NewDiscoveryValue(&cfg.Discovery), "discovery",
		"The discovery method kubeadm will use for connecting nodes to the master",
	)

	return cmd
}

// NewCmdReset returns "kubeadm reset" command.
func NewCmdReset(out io.Writer) *cobra.Command {
	var skipPreFlight bool
	cmd := &cobra.Command{
		Use:   "reset",
		Short: "Run this to revert any changes made to this host by 'kubeadm init' or 'kubeadm join'.",
		Run: func(cmd *cobra.Command, args []string) {
			r, err := NewReset(skipPreFlight)
			kubeadmutil.CheckErr(err)
			kubeadmutil.CheckErr(r.Run(out))
		},
	}

	cmd.PersistentFlags().BoolVar(
		&skipPreFlight, "skip-preflight-checks", false,
		"skip preflight checks normally run before modifying the system",
	)

	return cmd
}

// NewCmdJoin returns "kubeadm join" command.
func NewCmdJoin(out io.Writer) *cobra.Command {
	versioned := &kubeadmapiext.NodeConfiguration{}
	api.Scheme.Default(versioned)
	cfg := kubeadmapi.NodeConfiguration{}
	api.Scheme.Convert(versioned, &cfg, nil)

	var skipPreFlight bool
	var cfgPath string

	cmd := &cobra.Command{
		Use:   "join <master address>",
		Short: "Run this on any machine you wish to join an existing cluster",
		Run: func(cmd *cobra.Command, args []string) {
			j, err := NewJoin(cfgPath, args, &cfg, skipPreFlight)
			kubeadmutil.CheckErr(err)
			kubeadmutil.CheckErr(j.Run(out))
		},
	}

	cmd.PersistentFlags().StringVar(
		&cfg.Secrets.GivenToken, "token", cfg.Secrets.GivenToken,
		"(required) Shared secret used to secure bootstrap. Must match the output of 'kubeadm init'",
	)

	cmd.PersistentFlags().StringVar(&cfgPath, "config", cfgPath, "Path to kubeadm config file")

	cmd.PersistentFlags().BoolVar(
		&skipPreFlight, "skip-preflight-checks", false,
		"skip preflight checks normally run before modifying the system",
	)

	cmd.PersistentFlags().Int32Var(
		&cfg.APIPort, "api-port", cfg.APIPort,
		"(optional) API server port on the master",
	)

	cmd.PersistentFlags().Int32Var(
		&cfg.DiscoveryPort, "discovery-port", cfg.DiscoveryPort,
		"(optional) Discovery port on the master",
	)

	return cmd
}

func NewCmdVersion(out io.Writer) *cobra.Command {
	cmd := &cobra.Command{
		Use:   "version",
		Short: "Print the version of kubeadm",
		Run: func(cmd *cobra.Command, args []string) {
			err := RunVersion(out, cmd)
			kubeadmutil.CheckErr(err)
		},
	}
	return cmd
}

func NewCmdTokenGenerate(out io.Writer) *cobra.Command {
	return &cobra.Command{
		Use:   "generate",
		Short: "Generate and print a bootstrap token, but do not create it on the server.",
		Long: dedent.Dedent(`
			This command will print out a randomly-generated bootstrap token that can be used with
			the "init" and "join" commands.

			You don't have to use this command in order to generate a token, you can do so
			yourself as long as it's in the format "<6 characters>:<16 characters>". This
			command is provided for convenience to generate tokens in that format.

			You can also use "kubeadm init" without specifying a token, and it will
			generate and print one for you.
		`),
		Run: func(cmd *cobra.Command, args []string) {
			err := RunGenerateToken(out)
			kubeadmutil.CheckErr(err)
		},
	}
}

// NewCmdInit returns "kubeadm init" command.
func NewCmdInit(out io.Writer) *cobra.Command {
	versioned := &kubeadmapiext.MasterConfiguration{}
	api.Scheme.Default(versioned)
	cfg := kubeadmapi.MasterConfiguration{}
	api.Scheme.Convert(versioned, &cfg, nil)

	var cfgPath string
	var skipPreFlight bool
	cmd := &cobra.Command{
		Use:   "init",
		Short: "Run this in order to set up the Kubernetes master",
		Run: func(cmd *cobra.Command, args []string) {
			i, err := NewInit(cfgPath, &cfg, skipPreFlight)
			kubeadmutil.CheckErr(err)
			kubeadmutil.CheckErr(i.Validate())
			kubeadmutil.CheckErr(i.Run(out))
		},
	}

	cmd.PersistentFlags().StringSliceVar(
		&cfg.API.AdvertiseAddresses, "api-advertise-addresses", cfg.API.AdvertiseAddresses,
		"The IP addresses to advertise, in case autodetection fails",
	)
	cmd.PersistentFlags().StringSliceVar(
		&cfg.API.ExternalDNSNames, "api-external-dns-names", cfg.API.ExternalDNSNames,
		"The DNS names to advertise, in case you have configured them yourself",
	)
	cmd.PersistentFlags().StringVar(
		&cfg.Networking.ServiceSubnet, "service-cidr", cfg.Networking.ServiceSubnet,
		"Use alternative range of IP address for service VIPs",
	)
	cmd.PersistentFlags().StringVar(
		&cfg.Networking.PodSubnet, "pod-network-cidr", cfg.Networking.PodSubnet,
		"Specify range of IP addresses for the pod network; if set, the control plane will automatically allocate CIDRs for every node",
	)
	cmd.PersistentFlags().StringVar(
		&cfg.Networking.DNSDomain, "service-dns-domain", cfg.Networking.DNSDomain,
		`Use alternative domain for services, e.g. "myorg.internal"`,
	)
	cmd.PersistentFlags().Var(
		flags.NewCloudProviderFlag(&cfg.CloudProvider), "cloud-provider",
		`Enable cloud provider features (external load-balancers, storage, etc). Note that you have to configure all kubelets manually`,
	)

	cmd.PersistentFlags().StringVar(
		&cfg.KubernetesVersion, "use-kubernetes-version", cfg.KubernetesVersion,
		`Choose a specific Kubernetes version for the control plane`,
	)

	cmd.PersistentFlags().StringVar(&cfgPath, "config", cfgPath, "Path to kubeadm config file")

	// TODO (phase1+) @errordeveloper make the flags below not show up in --help but rather on --advanced-help
	cmd.PersistentFlags().StringSliceVar(
		&cfg.Etcd.Endpoints, "external-etcd-endpoints", cfg.Etcd.Endpoints,
		"etcd endpoints to use, in case you have an external cluster",
	)
	cmd.PersistentFlags().MarkDeprecated("external-etcd-endpoints", "this flag will be removed when componentconfig exists")

	cmd.PersistentFlags().StringVar(
		&cfg.Etcd.CAFile, "external-etcd-cafile", cfg.Etcd.CAFile,
		"etcd certificate authority certificate file. Note: The path must be in /etc/ssl/certs",
	)
	cmd.PersistentFlags().MarkDeprecated("external-etcd-cafile", "this flag will be removed when componentconfig exists")

	cmd.PersistentFlags().StringVar(
		&cfg.Etcd.CertFile, "external-etcd-certfile", cfg.Etcd.CertFile,
		"etcd client certificate file. Note: The path must be in /etc/ssl/certs",
	)
	cmd.PersistentFlags().MarkDeprecated("external-etcd-certfile", "this flag will be removed when componentconfig exists")

	cmd.PersistentFlags().StringVar(
		&cfg.Etcd.KeyFile, "external-etcd-keyfile", cfg.Etcd.KeyFile,
		"etcd client key file. Note: The path must be in /etc/ssl/certs",
	)
	cmd.PersistentFlags().MarkDeprecated("external-etcd-keyfile", "this flag will be removed when componentconfig exists")

	cmd.PersistentFlags().BoolVar(
		&skipPreFlight, "skip-preflight-checks", skipPreFlight,
		"skip preflight checks normally run before modifying the system",
	)

	cmd.PersistentFlags().Var(
		discovery.NewDiscoveryValue(&cfg.Discovery), "discovery",
		"The discovery method kubeadm will use for connecting nodes to the master",
	)

	return cmd
}

func NewCmdToken(out io.Writer, errW io.Writer) *cobra.Command {

	tokenCmd := &cobra.Command{
		Use:   "token",
		Short: "Manage bootstrap tokens.",

		// Without this callback, if a user runs just the "token"
		// command without a subcommand, or with an invalid subcommand,
		// cobra will print usage information, but still exit cleanly.
		// We want to return an error code in these cases so that the
		// user knows that their command was invalid.
		RunE: func(cmd *cobra.Command, args []string) error {
			if len(args) < 1 {
				return errors.New("missing subcommand; 'token' is not meant to be run on its own")
			} else {
				return fmt.Errorf("invalid subcommand: %s", args[0])
			}
		},
	}

	var token string
	var tokenDuration time.Duration
	createCmd := &cobra.Command{
		Use:   "create",
		Short: "Create bootstrap tokens on the server.",
		Run: func(tokenCmd *cobra.Command, args []string) {
			err := RunCreateToken(out, tokenCmd, tokenDuration, token)
			kubeadmutil.CheckErr(err)
		},
	}
	createCmd.PersistentFlags().DurationVar(&tokenDuration,
		"ttl", kubeadmutil.DefaultTokenDuration, "The duration before the token is automatically deleted.")
	createCmd.PersistentFlags().StringVar(
		&token, "token", "",
		"Shared secret used to secure cluster bootstrap. If none is provided, one will be generated for you.",
	)
	tokenCmd.AddCommand(createCmd)

	tokenCmd.AddCommand(NewCmdTokenGenerate(out))

	listCmd := &cobra.Command{
		Use:   "list",
		Short: "List bootstrap tokens on the server.",
		Run: func(tokenCmd *cobra.Command, args []string) {
			err := RunListTokens(out, errW, tokenCmd)
			kubeadmutil.CheckErr(err)
		},
	}
	tokenCmd.AddCommand(listCmd)

	deleteCmd := &cobra.Command{
		Use:   "delete",
		Short: "Delete bootstrap tokens on the server.",
		Run: func(tokenCmd *cobra.Command, args []string) {
			err := RunDeleteToken(out, tokenCmd, args[0])
			kubeadmutil.CheckErr(err)
		},
	}
	tokenCmd.AddCommand(deleteCmd)

	return tokenCmd
}

// NewCmdInit returns "kubeadm init" command.
func NewCmdInit(out io.Writer) *cobra.Command {
	versioned := &kubeadmapiext.MasterConfiguration{}
	api.Scheme.Default(versioned)
	cfg := kubeadmapi.MasterConfiguration{}
	api.Scheme.Convert(versioned, &cfg, nil)

	var cfgPath string
	var skipPreFlight bool
	cmd := &cobra.Command{
		Use:   "init",
		Short: "Run this in order to set up the Kubernetes master",
		Run: func(cmd *cobra.Command, args []string) {
			i, err := NewInit(cfgPath, &cfg, skipPreFlight)
			kubeadmutil.CheckErr(err)
			kubeadmutil.CheckErr(i.Validate())
			kubeadmutil.CheckErr(i.Run(out))
		},
	}

	cmd.PersistentFlags().StringSliceVar(
		&cfg.API.AdvertiseAddresses, "api-advertise-addresses", cfg.API.AdvertiseAddresses,
		"The IP addresses to advertise, in case autodetection fails",
	)
	cmd.PersistentFlags().Int32Var(
		&cfg.API.Port, "api-port", cfg.API.Port,
		"Port for API to bind to",
	)
	cmd.PersistentFlags().StringSliceVar(
		&cfg.API.ExternalDNSNames, "api-external-dns-names", cfg.API.ExternalDNSNames,
		"The DNS names to advertise, in case you have configured them yourself",
	)
	cmd.PersistentFlags().StringVar(
		&cfg.Networking.ServiceSubnet, "service-cidr", cfg.Networking.ServiceSubnet,
		"Use alternative range of IP address for service VIPs",
	)
	cmd.PersistentFlags().StringVar(
		&cfg.Networking.PodSubnet, "pod-network-cidr", cfg.Networking.PodSubnet,
		"Specify range of IP addresses for the pod network; if set, the control plane will automatically allocate CIDRs for every node",
	)
	cmd.PersistentFlags().StringVar(
		&cfg.Networking.DNSDomain, "service-dns-domain", cfg.Networking.DNSDomain,
		`Use alternative domain for services, e.g. "myorg.internal"`,
	)
	cmd.PersistentFlags().Var(
		flags.NewCloudProviderFlag(&cfg.CloudProvider), "cloud-provider",
		`Enable cloud provider features (external load-balancers, storage, etc). Note that you have to configure all kubelets manually`,
	)

	cmd.PersistentFlags().StringVar(
		&cfg.KubernetesVersion, "use-kubernetes-version", cfg.KubernetesVersion,
		`Choose a specific Kubernetes version for the control plane`,
	)

	cmd.PersistentFlags().StringVar(&cfgPath, "config", cfgPath, "Path to kubeadm config file")

	cmd.PersistentFlags().BoolVar(
		&skipPreFlight, "skip-preflight-checks", skipPreFlight,
		"skip preflight checks normally run before modifying the system",
	)

	cmd.PersistentFlags().Var(
		discovery.NewDiscoveryValue(&cfg.Discovery), "discovery",
		"The discovery method kubeadm will use for connecting nodes to the master",
	)

	return cmd
}