363 lines
8.0 KiB
Go
363 lines
8.0 KiB
Go
// +build linux
|
|
|
|
package host
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/binary"
|
|
"io/ioutil"
|
|
"os"
|
|
"os/exec"
|
|
"regexp"
|
|
"runtime"
|
|
"strings"
|
|
"syscall"
|
|
"unsafe"
|
|
|
|
common "github.com/influxdb/tivan/plugins/system/ps/common"
|
|
)
|
|
|
|
type LSB struct {
|
|
ID string
|
|
Release string
|
|
Codename string
|
|
Description string
|
|
}
|
|
|
|
func HostInfo() (*HostInfoStat, error) {
|
|
hostname, err := os.Hostname()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
ret := &HostInfoStat{
|
|
Hostname: hostname,
|
|
OS: runtime.GOOS,
|
|
}
|
|
|
|
platform, family, version, err := GetPlatformInformation()
|
|
if err == nil {
|
|
ret.Platform = platform
|
|
ret.PlatformFamily = family
|
|
ret.PlatformVersion = version
|
|
}
|
|
system, role, err := GetVirtualization()
|
|
if err == nil {
|
|
ret.VirtualizationSystem = system
|
|
ret.VirtualizationRole = role
|
|
}
|
|
uptime, err := BootTime()
|
|
if err == nil {
|
|
ret.Uptime = uptime
|
|
}
|
|
|
|
return ret, nil
|
|
}
|
|
|
|
func BootTime() (uint64, error) {
|
|
sysinfo := &syscall.Sysinfo_t{}
|
|
if err := syscall.Sysinfo(sysinfo); err != nil {
|
|
return 0, err
|
|
}
|
|
return uint64(sysinfo.Uptime), nil
|
|
}
|
|
|
|
func Users() ([]UserStat, error) {
|
|
utmpfile := "/var/run/utmp"
|
|
|
|
file, err := os.Open(utmpfile)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
buf, err := ioutil.ReadAll(file)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
u := utmp{}
|
|
entrySize := int(unsafe.Sizeof(u))
|
|
count := len(buf) / entrySize
|
|
|
|
ret := make([]UserStat, 0, count)
|
|
|
|
for i := 0; i < count; i++ {
|
|
b := buf[i*entrySize : i*entrySize+entrySize]
|
|
|
|
var u utmp
|
|
br := bytes.NewReader(b)
|
|
err := binary.Read(br, binary.LittleEndian, &u)
|
|
if err != nil {
|
|
continue
|
|
}
|
|
user := UserStat{
|
|
User: common.IntToString(u.User[:]),
|
|
Terminal: common.IntToString(u.Line[:]),
|
|
Host: common.IntToString(u.Host[:]),
|
|
Started: int(u.Tv.TvSec),
|
|
}
|
|
ret = append(ret, user)
|
|
}
|
|
|
|
return ret, nil
|
|
|
|
}
|
|
|
|
func getLSB() (*LSB, error) {
|
|
ret := &LSB{}
|
|
if common.PathExists("/etc/lsb-release") {
|
|
contents, err := common.ReadLines("/etc/lsb-release")
|
|
if err != nil {
|
|
return ret, err // return empty
|
|
}
|
|
for _, line := range contents {
|
|
field := strings.Split(line, "=")
|
|
if len(field) < 2 {
|
|
continue
|
|
}
|
|
switch field[0] {
|
|
case "DISTRIB_ID":
|
|
ret.ID = field[1]
|
|
case "DISTRIB_RELEASE":
|
|
ret.Release = field[1]
|
|
case "DISTRIB_CODENAME":
|
|
ret.Codename = field[1]
|
|
case "DISTRIB_DESCRIPTION":
|
|
ret.Description = field[1]
|
|
}
|
|
}
|
|
} else if common.PathExists("/usr/bin/lsb_release") {
|
|
out, err := exec.Command("/usr/bin/lsb_release").Output()
|
|
if err != nil {
|
|
return ret, err
|
|
}
|
|
for _, line := range strings.Split(string(out), "\n") {
|
|
field := strings.Split(line, ":")
|
|
if len(field) < 2 {
|
|
continue
|
|
}
|
|
switch field[0] {
|
|
case "Distributor ID":
|
|
ret.ID = field[1]
|
|
case "Release":
|
|
ret.Release = field[1]
|
|
case "Codename":
|
|
ret.Codename = field[1]
|
|
case "Description":
|
|
ret.Description = field[1]
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
return ret, nil
|
|
}
|
|
|
|
func GetPlatformInformation() (platform string, family string, version string, err error) {
|
|
|
|
lsb, err := getLSB()
|
|
if err != nil {
|
|
lsb = &LSB{}
|
|
}
|
|
|
|
if common.PathExists("/etc/oracle-release") {
|
|
platform = "oracle"
|
|
contents, err := common.ReadLines("/etc/oracle-release")
|
|
if err == nil {
|
|
version = getRedhatishVersion(contents)
|
|
}
|
|
} else if common.PathExists("/etc/enterprise-release") {
|
|
platform = "oracle"
|
|
contents, err := common.ReadLines("/etc/enterprise-release")
|
|
if err == nil {
|
|
version = getRedhatishVersion(contents)
|
|
}
|
|
} else if common.PathExists("/etc/debian_version") {
|
|
if lsb.ID == "Ubuntu" {
|
|
platform = "ubuntu"
|
|
version = lsb.Release
|
|
} else if lsb.ID == "LinuxMint" {
|
|
platform = "linuxmint"
|
|
version = lsb.Release
|
|
} else {
|
|
if common.PathExists("/usr/bin/raspi-config") {
|
|
platform = "raspbian"
|
|
} else {
|
|
platform = "debian"
|
|
}
|
|
contents, err := common.ReadLines("/etc/debian_version")
|
|
if err == nil {
|
|
version = contents[0]
|
|
}
|
|
}
|
|
} else if common.PathExists("/etc/redhat-release") {
|
|
contents, err := common.ReadLines("/etc/redhat-release")
|
|
if err == nil {
|
|
version = getRedhatishVersion(contents)
|
|
platform = getRedhatishPlatform(contents)
|
|
}
|
|
} else if common.PathExists("/etc/system-release") {
|
|
contents, err := common.ReadLines("/etc/system-release")
|
|
if err == nil {
|
|
version = getRedhatishVersion(contents)
|
|
platform = getRedhatishPlatform(contents)
|
|
}
|
|
} else if common.PathExists("/etc/gentoo-release") {
|
|
platform = "gentoo"
|
|
contents, err := common.ReadLines("/etc/gentoo-release")
|
|
if err == nil {
|
|
version = getRedhatishVersion(contents)
|
|
}
|
|
// TODO: suse detection
|
|
// TODO: slackware detecion
|
|
} else if common.PathExists("/etc/arch-release") {
|
|
platform = "arch"
|
|
// TODO: exherbo detection
|
|
} else if lsb.ID == "RedHat" {
|
|
platform = "redhat"
|
|
version = lsb.Release
|
|
} else if lsb.ID == "Amazon" {
|
|
platform = "amazon"
|
|
version = lsb.Release
|
|
} else if lsb.ID == "ScientificSL" {
|
|
platform = "scientific"
|
|
version = lsb.Release
|
|
} else if lsb.ID == "XenServer" {
|
|
platform = "xenserver"
|
|
version = lsb.Release
|
|
} else if lsb.ID != "" {
|
|
platform = strings.ToLower(lsb.ID)
|
|
version = lsb.Release
|
|
}
|
|
|
|
switch platform {
|
|
case "debian", "ubuntu", "linuxmint", "raspbian":
|
|
family = "debian"
|
|
case "fedora":
|
|
family = "fedora"
|
|
case "oracle", "centos", "redhat", "scientific", "enterpriseenterprise", "amazon", "xenserver", "cloudlinux", "ibm_powerkvm":
|
|
family = "rhel"
|
|
case "suse":
|
|
family = "suse"
|
|
case "gentoo":
|
|
family = "gentoo"
|
|
case "slackware":
|
|
family = "slackware"
|
|
case "arch":
|
|
family = "arch"
|
|
case "exherbo":
|
|
family = "exherbo"
|
|
}
|
|
|
|
return platform, family, version, nil
|
|
|
|
}
|
|
|
|
func getRedhatishVersion(contents []string) string {
|
|
c := strings.ToLower(strings.Join(contents, ""))
|
|
|
|
if strings.Contains(c, "rawhide") {
|
|
return "rawhide"
|
|
}
|
|
if matches := regexp.MustCompile(`release (\d[\d.]*)`).FindStringSubmatch(c); matches != nil {
|
|
return matches[1]
|
|
}
|
|
return ""
|
|
}
|
|
|
|
func getRedhatishPlatform(contents []string) string {
|
|
c := strings.ToLower(strings.Join(contents, ""))
|
|
|
|
if strings.Contains(c, "red hat") {
|
|
return "redhat"
|
|
}
|
|
f := strings.Split(c, " ")
|
|
|
|
return f[0]
|
|
}
|
|
|
|
func GetVirtualization() (string, string, error) {
|
|
var system string
|
|
var role string
|
|
|
|
if common.PathExists("/proc/xen") {
|
|
system = "xen"
|
|
role = "guest" // assume guest
|
|
|
|
if common.PathExists("/proc/xen/capabilities") {
|
|
contents, err := common.ReadLines("/proc/xen/capabilities")
|
|
if err == nil {
|
|
if common.StringContains(contents, "control_d") {
|
|
role = "host"
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if common.PathExists("/proc/modules") {
|
|
contents, err := common.ReadLines("/proc/modules")
|
|
if err == nil {
|
|
if common.StringContains(contents, "kvm") {
|
|
system = "kvm"
|
|
role = "host"
|
|
} else if common.StringContains(contents, "vboxdrv") {
|
|
system = "vbox"
|
|
role = "host"
|
|
} else if common.StringContains(contents, "vboxguest") {
|
|
system = "vbox"
|
|
role = "guest"
|
|
}
|
|
}
|
|
}
|
|
|
|
if common.PathExists("/proc/cpuinfo") {
|
|
contents, err := common.ReadLines("/proc/cpuinfo")
|
|
if err == nil {
|
|
if common.StringContains(contents, "QEMU Virtual CPU") ||
|
|
common.StringContains(contents, "Common KVM processor") ||
|
|
common.StringContains(contents, "Common 32-bit KVM processor") {
|
|
system = "kvm"
|
|
role = "guest"
|
|
}
|
|
}
|
|
}
|
|
|
|
if common.PathExists("/proc/bc/0") {
|
|
system = "openvz"
|
|
role = "host"
|
|
} else if common.PathExists("/proc/vz") {
|
|
system = "openvz"
|
|
role = "guest"
|
|
}
|
|
|
|
// not use dmidecode because it requires root
|
|
|
|
if common.PathExists("/proc/self/status") {
|
|
contents, err := common.ReadLines("/proc/self/status")
|
|
if err == nil {
|
|
|
|
if common.StringContains(contents, "s_context:") ||
|
|
common.StringContains(contents, "VxID:") {
|
|
system = "linux-vserver"
|
|
}
|
|
// TODO: guest or host
|
|
}
|
|
}
|
|
|
|
if common.PathExists("/proc/self/cgroup") {
|
|
contents, err := common.ReadLines("/proc/self/cgroup")
|
|
if err == nil {
|
|
|
|
if common.StringContains(contents, "lxc") ||
|
|
common.StringContains(contents, "docker") {
|
|
system = "lxc"
|
|
role = "guest"
|
|
} else if common.PathExists("/usr/bin/lxc-version") { // TODO: which
|
|
system = "lxc"
|
|
role = "host"
|
|
}
|
|
}
|
|
}
|
|
|
|
return system, role, nil
|
|
}
|