k3s/pkg/cli/cmds/agent.go

265 lines
8.2 KiB
Go

package cmds
import (
"os"
"path/filepath"
"github.com/pkg/errors"
"github.com/rancher/k3s/pkg/version"
"github.com/urfave/cli"
)
type Agent struct {
Token string
TokenFile string
ClusterSecret string
ServerURL string
APIAddressCh chan string
DisableLoadBalancer bool
ETCDAgent bool
LBServerPort int
ResolvConf string
DataDir string
NodeIP string
NodeExternalIP string
NodeName string
PauseImage string
Snapshotter string
Docker bool
ContainerRuntimeEndpoint string
NoFlannel bool
FlannelIface string
FlannelConf string
Debug bool
Rootless bool
RootlessAlreadyUnshared bool
WithNodeID bool
EnableSELinux bool
ProtectKernelDefaults bool
PrivateRegistry string
AirgapExtraRegistry cli.StringSlice
ExtraKubeletArgs cli.StringSlice
ExtraKubeProxyArgs cli.StringSlice
Labels cli.StringSlice
Taints cli.StringSlice
AgentShared
}
type AgentShared struct {
NodeIP string
}
var (
appName = filepath.Base(os.Args[0])
AgentConfig Agent
NodeIPFlag = cli.StringFlag{
Name: "node-ip,i",
Usage: "(agent/networking) IP address to advertise for node",
Destination: &AgentConfig.NodeIP,
}
NodeExternalIPFlag = cli.StringFlag{
Name: "node-external-ip",
Usage: "(agent/networking) External IP address to advertise for node",
Destination: &AgentConfig.NodeExternalIP,
}
NodeNameFlag = cli.StringFlag{
Name: "node-name",
Usage: "(agent/node) Node name",
EnvVar: version.ProgramUpper + "_NODE_NAME",
Destination: &AgentConfig.NodeName,
}
WithNodeIDFlag = cli.BoolFlag{
Name: "with-node-id",
Usage: "(agent/node) Append id to node name",
Destination: &AgentConfig.WithNodeID,
}
DockerFlag = cli.BoolFlag{
Name: "docker",
Usage: "(agent/runtime) Use docker instead of containerd",
Destination: &AgentConfig.Docker,
}
CRIEndpointFlag = cli.StringFlag{
Name: "container-runtime-endpoint",
Usage: "(agent/runtime) Disable embedded containerd and use alternative CRI implementation",
Destination: &AgentConfig.ContainerRuntimeEndpoint,
}
PrivateRegistryFlag = cli.StringFlag{
Name: "private-registry",
Usage: "(agent/runtime) Private registry configuration file",
Destination: &AgentConfig.PrivateRegistry,
Value: "/etc/rancher/" + version.Program + "/registries.yaml",
}
AirgapExtraRegistryFlag = cli.StringSliceFlag{
Name: "airgap-extra-registry",
Usage: "(agent/runtime) Additional registry to tag airgap images as being sourced from",
Value: &AgentConfig.AirgapExtraRegistry,
Hidden: true,
}
PauseImageFlag = cli.StringFlag{
Name: "pause-image",
Usage: "(agent/runtime) Customized pause image for containerd or docker sandbox",
Destination: &AgentConfig.PauseImage,
Value: "docker.io/rancher/pause:3.1",
}
SnapshotterFlag = cli.StringFlag{
Name: "snapshotter",
Usage: "(agent/runtime) Override default containerd snapshotter",
Destination: &AgentConfig.Snapshotter,
Value: "overlayfs",
}
FlannelFlag = cli.BoolFlag{
Name: "no-flannel",
Usage: "(deprecated) use --flannel-backend=none",
Destination: &AgentConfig.NoFlannel,
}
FlannelIfaceFlag = cli.StringFlag{
Name: "flannel-iface",
Usage: "(agent/networking) Override default flannel interface",
Destination: &AgentConfig.FlannelIface,
}
FlannelConfFlag = cli.StringFlag{
Name: "flannel-conf",
Usage: "(agent/networking) Override default flannel config file",
Destination: &AgentConfig.FlannelConf,
}
ResolvConfFlag = cli.StringFlag{
Name: "resolv-conf",
Usage: "(agent/networking) Kubelet resolv.conf file",
EnvVar: version.ProgramUpper + "_RESOLV_CONF",
Destination: &AgentConfig.ResolvConf,
}
ExtraKubeletArgs = cli.StringSliceFlag{
Name: "kubelet-arg",
Usage: "(agent/flags) Customized flag for kubelet process",
Value: &AgentConfig.ExtraKubeletArgs,
}
ExtraKubeProxyArgs = cli.StringSliceFlag{
Name: "kube-proxy-arg",
Usage: "(agent/flags) Customized flag for kube-proxy process",
Value: &AgentConfig.ExtraKubeProxyArgs,
}
NodeTaints = cli.StringSliceFlag{
Name: "node-taint",
Usage: "(agent/node) Registering kubelet with set of taints",
Value: &AgentConfig.Taints,
}
NodeLabels = cli.StringSliceFlag{
Name: "node-label",
Usage: "(agent/node) Registering and starting kubelet with set of labels",
Value: &AgentConfig.Labels,
}
DisableSELinuxFlag = cli.BoolTFlag{
Name: "disable-selinux",
Usage: "(deprecated) Use --selinux to explicitly enable SELinux",
Hidden: true,
}
ProtectKernelDefaultsFlag = cli.BoolFlag{
Name: "protect-kernel-defaults",
Usage: "(agent/node) Kernel tuning behavior. If set, error if kernel tunables are different than kubelet defaults.",
Destination: &AgentConfig.ProtectKernelDefaults,
}
SELinuxFlag = cli.BoolFlag{
Name: "selinux",
Usage: "(agent/node) Enable SELinux in containerd",
Hidden: false,
Destination: &AgentConfig.EnableSELinux,
EnvVar: version.ProgramUpper + "_SELINUX",
}
LBServerPortFlag = cli.IntFlag{
Name: "lb-server-port",
Usage: "(agent/node) Local port for supervisor client load-balancer. If the supervisor and apiserver are not colocated an additional port 1 less than this port will also be used for the apiserver client load-balancer.",
Hidden: false,
Destination: &AgentConfig.LBServerPort,
EnvVar: version.ProgramUpper + "_LB_SERVER_PORT",
Value: 6444,
}
)
func CheckSELinuxFlags(ctx *cli.Context) error {
disable, enable := DisableSELinuxFlag.Name, SELinuxFlag.Name
switch {
case ctx.IsSet(disable) && ctx.IsSet(enable):
return errors.Errorf("--%s is deprecated in favor of --%s to affirmatively enable it in containerd", disable, enable)
case ctx.IsSet(disable):
AgentConfig.EnableSELinux = !ctx.Bool(disable)
}
return nil
}
func NewAgentCommand(action func(ctx *cli.Context) error) cli.Command {
return cli.Command{
Name: "agent",
Usage: "Run node agent",
UsageText: appName + " agent [OPTIONS]",
Before: SetupDebug(CheckSELinuxFlags),
Action: action,
Flags: []cli.Flag{
ConfigFlag,
DebugFlag,
VLevel,
VModule,
LogFile,
AlsoLogToStderr,
cli.StringFlag{
Name: "token,t",
Usage: "(cluster) Token to use for authentication",
EnvVar: version.ProgramUpper + "_TOKEN",
Destination: &AgentConfig.Token,
},
cli.StringFlag{
Name: "token-file",
Usage: "(cluster) Token file to use for authentication",
EnvVar: version.ProgramUpper + "_TOKEN_FILE",
Destination: &AgentConfig.TokenFile,
},
cli.StringFlag{
Name: "server,s",
Usage: "(cluster) Server to connect to",
EnvVar: version.ProgramUpper + "_URL",
Destination: &AgentConfig.ServerURL,
},
cli.StringFlag{
Name: "data-dir,d",
Usage: "(agent/data) Folder to hold state",
Destination: &AgentConfig.DataDir,
Value: "/var/lib/rancher/" + version.Program + "",
},
NodeNameFlag,
WithNodeIDFlag,
NodeLabels,
NodeTaints,
DockerFlag,
CRIEndpointFlag,
PauseImageFlag,
SnapshotterFlag,
PrivateRegistryFlag,
AirgapExtraRegistryFlag,
NodeIPFlag,
NodeExternalIPFlag,
ResolvConfFlag,
FlannelIfaceFlag,
FlannelConfFlag,
ExtraKubeletArgs,
ExtraKubeProxyArgs,
ProtectKernelDefaultsFlag,
cli.BoolFlag{
Name: "rootless",
Usage: "(experimental) Run rootless",
Destination: &AgentConfig.Rootless,
},
&SELinuxFlag,
LBServerPortFlag,
// Deprecated/hidden below
&DisableSELinuxFlag,
FlannelFlag,
cli.StringFlag{
Name: "cluster-secret",
Usage: "(deprecated) use --token",
Destination: &AgentConfig.ClusterSecret,
EnvVar: version.ProgramUpper + "_CLUSTER_SECRET",
},
},
}
}