gopsutil

gopsutil–获取系统信息

gopsutil： psutil 是一个跨平台进程和系统监控的Python库，而gopsutil 是其Go语言版本的实现。Go语言部署简单、性能好的特点非常适合做一些诸如采集系统信息和监控的服务，本文介绍的gopsutil库是知名Python库：psutil的一个Go语言版本的实现。

​ 网站：[https://www.liwenzhou.com/posts/Go/go_gopsutil/]

​ 安装：go get github.com/shirou/gopsutil

​ 使用：
1.CPU

import "github.com/shirou/gopsutil/cpu"

// 采集CPU相关信息
func getCpuInfo() {
	cpuInfos, err := cpu.Info()
	if err != nil {
		fmt.Printf("get cpu info failed, err:%v", err)
	}
	for _, ci := range cpuInfos {
		fmt.Println(ci)
	}
	// CPU使用率
	for {
		percent, _ := cpu.Percent(time.Second, false)
		fmt.Printf("cpu percent:%v\n", percent)
	}
}


import "github.com/shirou/gopsutil/load"

//获取CPU负载信息
func getCpuLoad() {
	info, _ := load.Avg()
	fmt.Printf("%v\n", info)
}

2.Memory

import "github.com/shirou/gopsutil/mem"

// 内存信息
func getMemInfo() {
	memInfo, _ := mem.VirtualMemory()
	fmt.Printf("mem info:%v\n", memInfo)
}

3.Host

import "github.com/shirou/gopsutil/host"

// host info
func getHostInfo() {
	hInfo, _ := host.Info()
	fmt.Printf("host info:%v uptime:%v boottime:%v\n", hInfo, hInfo.Uptime, hInfo.BootTime)
}

4.Disk

import "github.com/shirou/gopsutil/disk"

// 硬盘信息
func getDiskInfo() {
	parts, err := disk.Partitions(true)
	if err != nil {
		fmt.Printf("get Partitions failed, err:%v\n", err)
		return
	}
	for _, part := range parts {
		fmt.Printf("part:%v\n", part.String())
		diskInfo, _ := disk.Usage(part.Mountpoint)
		fmt.Printf("disk info:used:%v free:%v\n", diskInfo.UsedPercent, diskInfo.Free)
	}

	ioStat, _ := disk.IOCounters()
	for k, v := range ioStat {
		fmt.Printf("%v:%v\n", k, v)
	}
}

5.net IO

import "github.com/shirou/gopsutil/net"

func getNetInfo() {
	info, _ := net.IOCounters(true)
	for index, v := range info {
		fmt.Printf("%v:%v send:%v recv:%v\n", index, v, v.BytesSent, v.BytesRecv)
	}
}

6.net：获取本机IP 的两种方式

func GetLocalIP() (ip string, err error) {
	addrs, err := net.InterfaceAddrs()
	if err != nil {
		return
	}
	for _, addr := range addrs {
		ipAddr, ok := addr.(*net.IPNet)
		if !ok {
			continue
		}
		if ipAddr.IP.IsLoopback() {
			continue
		}
		if !ipAddr.IP.IsGlobalUnicast() {
			continue
		}
		return ipAddr.IP.String(), nil
	}
	return
}

或

// Get preferred outbound ip of this machine
func GetOutboundIP() string {
	conn, err := net.Dial("udp", "8.8.8.8:80")
	if err != nil {
		log.Fatal(err)
	}
	defer conn.Close()

	localAddr := conn.LocalAddr().(*net.UDPAddr)
	fmt.Println(localAddr.String())
	return localAddr.IP.String()
}