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start_controllers.go
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/
start_controllers.go
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package start
import (
"fmt"
"io"
"os"
"github.com/golang/glog"
"github.com/spf13/cobra"
kerrors "k8s.io/kubernetes/pkg/api/errors"
kcmdutil "k8s.io/kubernetes/pkg/kubectl/cmd/util"
"github.com/openshift/origin/pkg/cmd/flagtypes"
configapi "github.com/openshift/origin/pkg/cmd/server/api"
)
const controllersLong = `Start the master controllers
This command starts the controllers for the master. Running
$ %[1]s start master %[2]s
will start the controllers that manage the master state, including the scheduler. The controllers
will run in the foreground until you terminate the process.`
// NewCommandStartMasterControllers starts only the controllers
func NewCommandStartMasterControllers(name, basename string, out io.Writer) (*cobra.Command, *MasterOptions) {
options := &MasterOptions{Output: out}
options.DefaultsFromName(basename)
cmd := &cobra.Command{
Use: "controllers",
Short: "Launch master controllers",
Long: fmt.Sprintf(controllersLong, basename, name),
Run: func(c *cobra.Command, args []string) {
if err := options.Complete(); err != nil {
fmt.Fprintln(c.Out(), kcmdutil.UsageError(c, err.Error()))
return
}
if len(options.ConfigFile) == 0 {
fmt.Fprintln(c.Out(), kcmdutil.UsageError(c, "--config is required for this command"))
return
}
if err := options.Validate(args); err != nil {
fmt.Fprintln(c.Out(), kcmdutil.UsageError(c, err.Error()))
return
}
startProfiler()
if err := options.StartMaster(); err != nil {
if kerrors.IsInvalid(err) {
if details := err.(*kerrors.StatusError).ErrStatus.Details; details != nil {
fmt.Fprintf(c.Out(), "Invalid %s %s\n", details.Kind, details.Name)
for _, cause := range details.Causes {
fmt.Fprintf(c.Out(), " %s: %s\n", cause.Field, cause.Message)
}
os.Exit(255)
}
}
glog.Fatal(err)
}
},
}
// start controllers on a non conflicting health port from the default master
listenArg := &ListenArg{
ListenAddr: flagtypes.Addr{
Value: "127.0.0.1:8444",
DefaultScheme: "https",
DefaultPort: 8444,
AllowPrefix: true,
}.Default(),
}
options.MasterArgs = NewDefaultMasterArgs()
options.MasterArgs.StartControllers = true
options.MasterArgs.OverrideConfig = func(config *configapi.MasterConfig) error {
config.ServingInfo.BindAddress = listenArg.ListenAddr.URL.Host
return nil
}
flags := cmd.Flags()
// This command only supports reading from config and the listen argument
flags.StringVar(&options.ConfigFile, "config", "", "Location of the master configuration file to run from. Required")
cmd.MarkFlagFilename("config", "yaml", "yml")
BindListenArg(listenArg, flags, "")
return cmd, options
}