k3s/pkg/cli/cmds/root.go

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package cmds
import (
"fmt"
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"os"
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"github.com/rancher/k3s/pkg/version"
"github.com/sirupsen/logrus"
"github.com/urfave/cli"
)
var (
debug bool
)
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func init() {
// hack - force "file,dns" lookup order if go dns is used
if os.Getenv("RES_OPTIONS") == "" {
os.Setenv("RES_OPTIONS", " ")
}
}
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func NewApp() *cli.App {
app := cli.NewApp()
app.Name = appName
app.Usage = "Kubernetes, but small and simple"
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app.Version = fmt.Sprintf("%s (%s)", version.Version, version.GitCommit)
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cli.VersionPrinter = func(c *cli.Context) {
fmt.Printf("%s version %s\n", app.Name, app.Version)
}
app.Flags = []cli.Flag{
cli.BoolFlag{
Name: "debug",
Usage: "Turn on debug logs",
Destination: &debug,
EnvVar: "K3S_DEBUG",
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},
}
app.Before = func(ctx *cli.Context) error {
if debug {
logrus.SetLevel(logrus.DebugLevel)
}
return nil
}
return app
}