k3s/pkg/cli/cmds/server.go

package cmds

import (
	"fmt"

	"github.com/rancher/k3s/pkg/daemons/config"
	"github.com/urfave/cli"
)

type Server struct {
	ClusterCIDR              string
	ClusterSecret            string
	ServiceCIDR              string
	ClusterDNS               string
	ClusterDomain            string
	HTTPSPort                int
	HTTPPort                 int
	DataDir                  string
	DisableAgent             bool
	KubeConfigOutput         string
	KubeConfigMode           string
	TLSSan                   cli.StringSlice
	BindAddress              string
	ExtraAPIArgs             cli.StringSlice
	ExtraSchedulerArgs       cli.StringSlice
	ExtraControllerArgs      cli.StringSlice
	ExtraCloudControllerArgs cli.StringSlice
	Rootless                 bool
	StoreBootstrap           bool
	StorageEndpoint          string
	StorageCAFile            string
	StorageCertFile          string
	StorageKeyFile           string
	AdvertiseIP              string
	AdvertisePort            int
	DisableScheduler         bool
	FlannelBackend           string
	DefaultLocalStoragePath  string
	DisableCCM               bool
}

var ServerConfig Server

func NewServerCommand(action func(*cli.Context) error) cli.Command {
	return cli.Command{
		Name:      "server",
		Usage:     "Run management server",
		UsageText: appName + " server [OPTIONS]",
		Action:    action,
		Flags: []cli.Flag{
			VLevel,
			VModule,
			LogFile,
			AlsoLogToStderr,
			cli.StringFlag{
				Name:        "bind-address",
				Usage:       "k3s bind address (default: localhost)",
				Destination: &ServerConfig.BindAddress,
			},
			cli.IntFlag{
				Name:        "https-listen-port",
				Usage:       "HTTPS listen port",
				Value:       6443,
				Destination: &ServerConfig.HTTPSPort,
			},
			cli.IntFlag{
				Name:        "http-listen-port",
				Usage:       "HTTP listen port (for /healthz, HTTPS redirect, and port for TLS terminating LB)",
				Value:       0,
				Destination: &ServerConfig.HTTPPort,
			},
			cli.StringFlag{
				Name:        "data-dir,d",
				Usage:       "Folder to hold state default /var/lib/rancher/k3s or ${HOME}/.rancher/k3s if not root",
				Destination: &ServerConfig.DataDir,
			},
			cli.BoolFlag{
				Name:        "disable-agent",
				Usage:       "Do not run a local agent and register a local kubelet",
				Destination: &ServerConfig.DisableAgent,
			},
			cli.StringFlag{
				Name:        "cluster-cidr",
				Usage:       "Network CIDR to use for pod IPs",
				Destination: &ServerConfig.ClusterCIDR,
				Value:       "10.42.0.0/16",
			},
			cli.StringFlag{
				Name:        "cluster-secret",
				Usage:       "Shared secret used to bootstrap a cluster",
				Destination: &ServerConfig.ClusterSecret,
				EnvVar:      "K3S_CLUSTER_SECRET",
			},
			cli.StringFlag{
				Name:        "service-cidr",
				Usage:       "Network CIDR to use for services IPs",
				Destination: &ServerConfig.ServiceCIDR,
				Value:       "10.43.0.0/16",
			},
			cli.StringFlag{
				Name:        "cluster-dns",
				Usage:       "Cluster IP for coredns service. Should be in your service-cidr range",
				Destination: &ServerConfig.ClusterDNS,
				Value:       "",
			},
			cli.StringFlag{
				Name:        "cluster-domain",
				Usage:       "Cluster Domain",
				Destination: &ServerConfig.ClusterDomain,
				Value:       "cluster.local",
			},
			cli.StringSliceFlag{
				Name:  "no-deploy",
				Usage: "Do not deploy packaged components (valid items: coredns, servicelb, traefik)",
			},
			cli.StringFlag{
				Name:        "write-kubeconfig,o",
				Usage:       "Write kubeconfig for admin client to this file",
				Destination: &ServerConfig.KubeConfigOutput,
				EnvVar:      "K3S_KUBECONFIG_OUTPUT",
			},
			cli.StringFlag{
				Name:        "write-kubeconfig-mode",
				Usage:       "Write kubeconfig with this mode",
				Destination: &ServerConfig.KubeConfigMode,
				EnvVar:      "K3S_KUBECONFIG_MODE",
			},
			cli.StringSliceFlag{
				Name:  "tls-san",
				Usage: "Add additional hostname or IP as a Subject Alternative Name in the TLS cert",
				Value: &ServerConfig.TLSSan,
			},
			cli.StringSliceFlag{
				Name:  "kube-apiserver-arg",
				Usage: "Customized flag for kube-apiserver process",
				Value: &ServerConfig.ExtraAPIArgs,
			},
			cli.StringSliceFlag{
				Name:  "kube-scheduler-arg",
				Usage: "Customized flag for kube-scheduler process",
				Value: &ServerConfig.ExtraSchedulerArgs,
			},
			cli.StringSliceFlag{
				Name:  "kube-controller-arg",
				Usage: "Customized flag for kube-controller-manager process",
				Value: &ServerConfig.ExtraControllerArgs,
			},
			cli.StringSliceFlag{
				Name:  "kube-cloud-controller-arg",
				Usage: "Customized flag for kube-cloud-controller-manager process",
				Value: &ServerConfig.ExtraCloudControllerArgs,
			},
			cli.BoolFlag{
				Name:        "rootless",
				Usage:       "(experimental) Run rootless",
				Destination: &ServerConfig.Rootless,
			},
			cli.BoolFlag{
				Name:        "bootstrap-save",
				Usage:       "(experimental) Save bootstrap information in the storage endpoint",
				Hidden:      true,
				Destination: &ServerConfig.StoreBootstrap,
			},
			cli.StringFlag{
				Name:        "storage-endpoint",
				Usage:       "Specify etcd, Mysql, Postgres, or Sqlite (default) data source name",
				Destination: &ServerConfig.StorageEndpoint,
				EnvVar:      "K3S_STORAGE_ENDPOINT",
			},
			cli.StringFlag{
				Name:        "storage-cafile",
				Usage:       "SSL Certificate Authority file used to secure storage backend communication",
				Destination: &ServerConfig.StorageCAFile,
				EnvVar:      "K3S_STORAGE_CAFILE",
			},
			cli.StringFlag{
				Name:        "storage-certfile",
				Usage:       "SSL certification file used to secure storage backend communication",
				Destination: &ServerConfig.StorageCertFile,
				EnvVar:      "K3S_STORAGE_CERTFILE",
			},
			cli.StringFlag{
				Name:        "storage-keyfile",
				Usage:       "SSL key file used to secure storage backend communication",
				Destination: &ServerConfig.StorageKeyFile,
				EnvVar:      "K3S_STORAGE_KEYFILE",
			},
			cli.StringFlag{
				Name:        "advertise-address",
				Usage:       "IP address that apiserver uses to advertise to members of the cluster",
				Destination: &ServerConfig.AdvertiseIP,
			},
			cli.IntFlag{
				Name:        "advertise-port",
				Usage:       "Port that apiserver uses to advertise to members of the cluster",
				Value:       0,
				Destination: &ServerConfig.AdvertisePort,
			},
			cli.BoolFlag{
				Name:        "disable-scheduler",
				Usage:       "Disable Kubernetes default scheduler",
				Destination: &ServerConfig.DisableScheduler,
			},
			cli.BoolFlag{
				Name:        "disable-cloud-controller",
				Usage:       "Disable k3s default cloud controller manager",
				Destination: &ServerConfig.DisableCCM,
			},
			cli.StringFlag{
				Name:        "flannel-backend",
				Usage:       fmt.Sprintf("(experimental) One of '%s', '%s', '%s', or '%s'", config.FlannelBackendNone, config.FlannelBackendVXLAN, config.FlannelBackendIPSEC, config.FlannelBackendWireguard),
				Destination: &ServerConfig.FlannelBackend,
				Value:       config.FlannelBackendVXLAN,
			},
			cli.StringFlag{
				Name:        "default-local-storage-path",
				Usage:       "Default local storage path for local provisioner storage class",
				Destination: &ServerConfig.DefaultLocalStoragePath,
			},
			NodeIPFlag,
			NodeNameFlag,
			DockerFlag,
			FlannelFlag,
			FlannelIfaceFlag,
			FlannelConfFlag,
			CRIEndpointFlag,
			PauseImageFlag,
			ResolvConfFlag,
			ExtraKubeletArgs,
			ExtraKubeProxyArgs,
			NodeLabels,
			NodeTaints,
			PrivateRegistryFlag,
			NodeExternalIPFlag,
		},
	}
}