netdata/netdata

// SPDX-License-Identifier: GPL-3.0-or-later

package hostinfo

import (
    "bytes"
    "context"
    "os"
    "os/exec"
    "time"
)

var Hostname = getHostname()

func getHostname() string {
    path, err := exec.LookPath("hostname")
    if err != nil {
        return ""
    }

    ctx, cancel := context.WithTimeout(context.Background(), time.Second*2)
    defer cancel()

    bs, err := exec.CommandContext(ctx, path).Output()
    if err != nil {
        return ""
    }

    return string(bytes.TrimSpace(bs))
}

var (
    envKubeHost = os.Getenv("KUBERNETES_SERVICE_HOST")
    envKubePort = os.Getenv("KUBERNETES_SERVICE_PORT")
)

func IsInsideK8sCluster() bool {
    return envKubeHost != "" && envKubePort != ""
}