Go语言中使用gopsutil进行系统信息采集

Thu, 23 Mar 2023 00:01:23 +0800

1. gopsutil包介绍

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。

安装go get github.com/shirou/gopsutil

2. gopsutil包的使用

2.1. 采集CPU相关信息

 1package main
 2
 3import (
 4    "fmt"
 5    "github.com/shirou/gopsutil/cpu"
 6)
 7
 8func main() {
 9    c, _ := cpu.Info()
10    fmt.Println("cpu信息:",c)
11    /*用户CPU时间/系统CPU时间/空闲时间。。。等等
12    用户CPU时间：就是用户的进程获得了CPU资源以后，在用户态执行的时间。
13    系统CPU时间：用户进程获得了CPU资源以后，在内核态的执行时间。
14    */
15    c1,_ := cpu.Times(false)
16    fmt.Println("cpu1:",c1)
17    
18    // CPU使用率，每秒刷新一次
19    for{
20     c2, _ := cpu.Percent(time.Duration(time.Second), false)
21     fmt.Println(c2)
22    }
23}

运行后输出结果如下

1cpu信息: [{"cpu":0,"vendorId":"GenuineIntel","family":"6","model":"78","stepping":3,"physicalId":"","coreId":"","cores":2,"modelName":"Intel(R) Core(TM) i5-6360U CPU @ 2.00GHz","mhz":2000,"cacheSize":256,"flags":["fpu","vme","de","pse","tsc","msr","pae","mce","cx8","apic","sep","mtrr","pge","mca","cmov","pat","pse36","clfsh","ds","acpi","mmx","fxsr","sse","sse2","ss","htt","tm","pbe","sse3","pclmulqdq","dtes64","mon","dscpl","vmx","smx","est","tm2","ssse3","fma","cx16","tpr","pdcm","sse4.1","sse4.2","x2apic","movbe","popcnt","aes","pcid","xsave","osxsave","seglim64","tsctmr","avx1.0","rdrand","f16c","rdwrfsgs","tsc_thread_offset","sgx","bmi1","hle","avx2","smep","bmi2","erms","invpcid","rtm","fpu_csds","mpx","rdseed","adx","smap","clfsopt","ipt","mdclear","tsxfa","ibrs","stibp","l1df","acapmsr","ssbd","syscall","xd","1gbpage","em64t","lahf","lzcnt","prefetchw","rdtscp","tsci"],"microcode":""}]
2cpu1: [{"cpu":"cpu-total","user":28155.8,"system":12587.9,"idle":18629.5,"nice":0.0,"iowait":0.0,"irq":0.0,"softirq":0.0,"steal":0.0,"guest":0.0,"guestNice":0.0}]
3[14.640198511110253]
4[24.371859296492058]
5[36.06965174136557]
6[25.249999999869033]
7[9.750000000003183]
8[10.723192019951934]
9[7.231920199519346]

2.2. 采集内存信息

 1package main
 2
 3import (
 4	"fmt"
 5	"github.com/shirou/gopsutil/mem"
 6)
 7
 8func main() {
 9	//获取物理内存和交换区内存信息
10	m1, _ := mem.VirtualMemory()
11	fmt.Println("m1:", m1)
12	m2, _ := mem.SwapMemory()
13	fmt.Println("m2:", m2)
14}

运行后输出结果如下

1m1: {"total":8589934592,"available":2471567360,"used":6118367232,"usedPercent":71.22716903686523,"free":287182848,"active":2450747392,"inactive":2184384512,"wired":2206617600,"laundry":0,"buffers":0,"cached":0,"writeback":0,"dirty":0,"writebacktmp":0,"shared":0,"slab":0,"sreclaimable":0,"sunreclaim":0,"pagetables":0,"swapcached":0,"commitlimit":0,"committedas":0,"hightotal":0,"highfree":0,"lowtotal":0,"lowfree":0,"swaptotal":0,"swapfree":0,"mapped":0,"vmalloctotal":0,"vmallocused":0,"vmallocchunk":0,"hugepagestotal":0,"hugepagesfree":0,"hugepagesize":0}
2m2: {"total":2147483648,"used":1139802112,"free":1007681536,"usedPercent":53.076171875,"sin":0,"sout":0,"pgin":0,"pgout":0,"pgfault":0,"pgmajfault":0}

2.3. 采集主机信息

 1package main
 2
 3import (
 4    "fmt"
 5    "github.com/shirou/gopsutil/host"
 6)
 7
 8func main() {
 9  h,_ := host.Info()
10  fmt.Println("本机信息：",h)
11}

运行结果如下

1本机信息： {"hostname":"bogon","uptime":123107,"bootTime":1679378749,"procs":529,"os":"darwin","platform":"darwin","platformFamily":"Standalone Workstation","platformVersion":"12.6.3","kernelVersion":"21.6.0","kernelArch":"x86_64","virtualizationSystem":"","virtualizationRole":"","hostid":"7eaf5a50-bd77-5161-807f-c0e6b43c525d"}

2.4. 采集磁盘信息

 1package main
 2
 3import(
 4	"fmt"
 5	"github.com/shirou/gopsutil/disk"
 6)
 7
 8func main(){
 9	 //可以通过psutil获取磁盘分区、磁盘使用率和磁盘IO信息
10	 d1, _ := disk.Partitions(true)  //所有分区
11	 fmt.Println("d1:",d1)
12	 d2, _ := disk.Usage("E:")  //指定某路径的硬盘使用情况
13	 fmt.Println("d2:",d2)
14	 d3, _ := disk.IOCounters()  //所有硬盘的io信息
15	 fmt.Println("d3:",d3)
16}

运行结果输出如下

1d1: [{"device":"/dev/disk1s7s1","mountpoint":"/","fstype":"apfs","opts":"ro,journaled,multilabel"} {"device":"devfs","mountpoint":"/dev","fstype":"devfs","opts":"rw,nobrowse,multilabel"} {"device":"/dev/disk1s4","mountpoint":"/System/Volumes/VM","fstype":"apfs","opts":"rw,noexec,nobrowse,journaled,multilabel,noatime"} {"device":"/dev/disk1s2","mountpoint":"/System/Volumes/Preboot","fstype":"apfs","opts":"rw,nobrowse,journaled,multilabel"} {"device":"/dev/disk1s6","mountpoint":"/System/Volumes/Update","fstype":"apfs","opts":"rw,nobrowse,journaled,multilabel"} {"device":"/dev/disk1s1","mountpoint":"/System/Volumes/Data","fstype":"apfs","opts":"rw,nobrowse,journaled,multilabel"} {"device":"/dev/disk1s5","mountpoint":"/Volumes/Macintosh HD","fstype":"apfs","opts":"ro,journaled,multilabel"} {"device":"map auto_home","mountpoint":"/System/Volumes/Data/home","fstype":"autofs","opts":"rw,nobrowse,automounted,multilabel"}]
2d2: <nil>
3d3: map[disk0:{"readCount":4415145,"mergedReadCount":0,"writeCount":1979881,"mergedWriteCount":0,"readBytes":101074788352,"writeBytes":70279589888,"readTime":3035356,"writeTime":1168835,"iopsInProgress":0,"ioTime":4204191,"weightedIO":0,"name":"disk0","serialNumber":"","label":""}]

2.5. 采集网络信息

 1package main
 2
 3import (
 4	"fmt"
 5
 6	"github.com/shirou/gopsutil/net"
 7)
 8
 9func main() {
10	//获取当前网络连接信息
11	n1, _ := net.Connections("all") //可填入tcp、udp、tcp4、udp4等等
12	fmt.Println("n1:", n1)
13
14	//获取网络读写字节／包的个数
15	n2, _ := net.IOCounters(false)
16	fmt.Println("n2:", n2)
17}

输出结果如下

1n1: [{"fd":8,"family":2,"type":1,"localaddr":{"ip":"10.10.10.7","port":53069},"remoteaddr":{"ip":"76.223.31.44","port":443},"status":"ESTABLISHED","uids":null,"pid":458} {"fd":6,"family":2,"type":1,"localaddr":{"ip":"*","port":80},"remoteaddr":{"ip":"","port":0},"status":"LISTEN","uids":null,"pid":462} 
2...
3n2: [{"name":"all","bytesSent":477026803,"bytesRecv":655952405,"packetsSent":538975,"packetsRecv":656382,"errin":0,"errout":0,"dropin":0,"dropout":67,"fifoin":0,"fifoout":0}]

2.6. 采集进程相关信息

 1package main
 2
 3import (
 4	"fmt"
 5
 6	"github.com/shirou/gopsutil/process"
 7)
 8
 9func main() {
10	//获取到所有进程的详细信息
11	p1, _ := process.Pids() //获取当前所有进程的pid
12	fmt.Println("p1:", p1)
13	ifExists, _ := process.PidExists(10086) // 判断进程是否存在
14	fmt.Println("ifExists:", ifExists)
15
16}

输出结果

1p1: [1 88 89 92 93 94 97 99 101 105 107 108 110 114 115 116 117 120 124 125 126 127 128 129 130 131 136 137 138 140 141 144 145 146 149 150 151 152 153 154 155 156 157 158 161 162 163 165 169 170 178 183 210 211 214 215 216 217 225 226 227 228 229 230 231 233 234 236 238 240 242 244 247 249 250 252 256 257 259 260 261 263 264 265 266 269 284 315 317 319 324 325 326 327 329 333 334 340 341 343 346 347 348 349 354 359 360 362 363 364 368 370 371 374 376 378 379 380 382 389 390 391 392 393 396 397 398 399 400 401 402 405 406 407 408 411 412 413 414 415 416 417 418 419 420 421 422 423 424 426 427 428 429 430 431 432 433 434 436 437 438 439 441 442 443 445 446 447 449 450 451 452 453 454 455 456 458 459 462 463 465 466 467 469 471 472 473 474 475 477 479 481 482 483 484 485 486 487 488 489 490 491 492 493 496 499 500 501 502 503 504 505 506 507 508 509 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 528 529 530 531 532 533 534 535 536 537 539 540 543 544 545 546 547 548 551 552 553 554 555 556 557 558 559 560 562 563 565 566 567 568 569 570 571 572 575 576 577 578 579 580 581 582 583 584 585 641 644 645 646 648 651 653 654 655 656 658 659 660 661 662 663 664 665 666 667 668 671 672 674 680 684 685 686 689 691 694 697 698 699 700 701 703 707 709 710 711 712 719 723 731 733 747 759 760 761 762 763 771 791 809 810 849 871 884 885 933 947 1028 1291 1363 1379 1380 1381 1382 1383 1463 1488 1489 1490 1667 1760 1761 2007 2080 2082 2270 2271 2272 2295 2298 2988 3001 3113 3874 3909 3925 4334 4338 4340 4341 4342 4343 4344 4385 4387 4389 4568 4569 5280 5283 5284 5294 5295 5296 5297 5298 5299 5301 5302 5304 5580 5684 5725 5726 5841 7509 7698 7739 8109 8111 8377 9009 9016 9077 9139 9140 9250 9366 9368 9370 9373 9380 9415 9714 10047 10109 10232 10278 10308 10503 10511 10512 10513 10610 10767 10783 11008 21605 21739 21740 21741 21750 21768 21848 21872 21873 21881 21908 21935 21939 21940 22098 22100 22106 22108 22109 22114 22115 22116 22117 22118 22119 22120 22121 22125 22126 22127 22195 22940 22942 23332 23334 23335 23635 23781 23825 23832 23882 23886 23887 23888 23891 23892 23951 23953 23954 23955 23957 23958 23959 23960 23961 24139 24140 24141 24142 26215 26216 26219 26988 26989 27028 28757 28758 28759 28760 28769 29834 29847 29848 29873 29874 29889 29943 29958 29970 30020 30921 30925 30926 30933 30934 30950 30952 30981 30982 31562 32280 32283 32284 32285 32286 32315 32459 32460 32505 32561 32596 32703 32734 32735 32738]
2ifExists: false

3. 应用领域

3.1. 服务器性能监控

写一个程序，周期性的获取服务器的各项指标数据，存入数据库中，然后通过界面进行查询，方便排查故障。

Gopsutil on ttz.pw