Use of golang gopsutil Library: process and system resource monitoring (CPU, memory, disk, etc.)

golang gopsutil Library usage ： Process and system resource monitoring (CPU Memory Disks, etc )

| Golang

psutil Is a cross platform process and system monitoring Python library , and gopsutil It is its Go Implementation of language version . This paper introduces its basic use .

Go Language deployment is simple 、 Good performance is very suitable for some services such as collecting system information and monitoring , This paper introduces gopsutil The library is well known Python library ：psutil One of the Go Implementation of language version .

install

go get github.com/shirou/gopsutil

Use

CPU

collection CPU Related information .

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

// cpu info
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 Usage rate 
	for {
    
		percent, _ := cpu.Percent(time.Second, false)
		fmt.Printf("cpu percent:%v\n", percent)
	}
}

obtain CPU Load information ：

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

func getCpuLoad() {
    
	info, _ := load.Avg()
	fmt.Printf("%v\n", info)
}

Memory

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

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

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)
}

Disk

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

// disk info
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)
	}
}

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)
	}
}

net

Get local IP Two ways

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
}

or ：

// 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()
}

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Reference link ：https://www.liwenzhou.com/posts/Go/go_gopsutil/