php获取linux服务器CPU、内存、硬盘使用率的实现代码

2. define("MONITORED_IP", "172.16.0.191"); //被监控的服务器IP地址 也就是本机地址
3. define("DB_SERVER", "172.16.7.2"); //存放数据的服务器IP地址
4. define("DB_USER", "root");
5. define("DB_PWD","111111");
6. define("DB_NMAE","performance");
8. class MyConnect{
9. public function connect($db_server,$db_user,$db_pwd,$db_name){
11. $conn = mysql_connect($db_server,$db_user,$db_pwd);
12. if (!$conn){
13. die('连接数据库失败: ' . mysql_error());
14. }
15. $flag = mysql_select_db($db_name,$conn);
16. if(!$flag){
17. echo "

    数据库连接出错!

    ";exit();
18. }else{
19. mysql_query("SET NAMES UTF8");
20. }
21. }
22. }
23. ?>

2、获取服务器性能数据的文件 get_used_status.php

3. /**

4. * 获取服务器性能CPU、内存、硬盘等使用率
5. * Edit bbs.it-home.org
6. */
7. /*连接数据 begin*/
8. include("conn.php");
9. $obj_MyConnect = new MyConnect();
10. $obj_MyConnect -> connect(DB_SERVER,DB_USER,DB_PWD,DB_NMAE);
11. /*连接数据 end*/
13. function get_used_status(){
14. $fp = popen('top -b -n 2 | grep -E "^(Cpu|Mem|Tasks)"',"r");//获取某一时刻系统cpu和内存使用情况
15. $rs = "";
16. while(!feof($fp)){
17. $rs .= fread($fp,1024);
18. }
19. pclose($fp);
20. $sys_info = explode("\n",$rs);

21. $tast_info = explode(",",$sys_info[3]);//进程 数组

22. $cpu_info = explode(",",$sys_info[4]); //CPU占有量 数组
23. $mem_info = explode(",",$sys_info[5]); //内存占有量 数组

24. //正在运行的进程数

25. $tast_running = trim(trim($tast_info[1],'running'));
28. //CPU占有量
29. $cpu_usage = trim(trim($cpu_info[0],'Cpu(s): '),'%us'); //百分比
31. //内存占有量
32. $mem_total = trim(trim($mem_info[0],'Mem: '),'k total');
33. $mem_used = trim($mem_info[1],'k used');
34. $mem_usage = round(100*intval($mem_used)/intval($mem_total),2); //百分比

36. /*硬盘使用率 begin*/

37. $fp = popen('df -lh | grep -E "^(/)"',"r");
38. $rs = fread($fp,1024);
39. pclose($fp);
40. $rs = preg_replace("/\s{2,}/",' ',$rs); //把多个空格换成 “_”
41. $hd = explode(" ",$rs);
42. $hd_avail = trim($hd[3],'G'); //磁盘可用空间大小 单位G
43. $hd_usage = trim($hd[4],'%'); //挂载点 百分比
44. //print_r($hd);
45. /*硬盘使用率 end*/
47. //检测时间
48. $fp = popen("date +\"%Y-%m-%d %H:%M\"","r");
49. $rs = fread($fp,1024);
50. pclose($fp);
51. $detection_time = trim($rs);
53. /*获取IP地址 begin*/
54. /*
55. $fp = popen('ifconfig eth0 | grep -E "(inet addr)"','r');
56. $rs = fread($fp,1024);
57. pclose($fp);
58. $rs = preg_replace("/\s{2,}/",' ',trim($rs)); //把多个空格换成 “_”
59. $rs = explode(" ",$rs);
60. $ip = trim($rs[1],'addr:');
61. */
62. /*获取IP地址 end*/
63. /*
64. $file_name = "/tmp/data.txt"; // 绝对路径: homedata.dat
65. $file_pointer = fopen($file_name, "a+"); // "w"是一种模式，详见后面
66. fwrite($file_pointer,$ip); // 先把文件剪切为0字节大小， 然后写入
67. fclose($file_pointer); // 结束
68. */
70. return array('cpu_usage'=>$cpu_usage,'mem_usage'=>$mem_usage,'hd_avail'=>$hd_avail,'hd_usage'=>$hd_usage,'tast_running'=>$tast_running,'detection_time'=>$detection_time);
71. }
73. //echo date("Y-m-d H:i:s",time())."
    ";
75. $status=get_used_status();
77. $sql = "insert into performance(ip,cpu_usage,mem_usage,hd_avail,hd_usage,tast_running,detection_time) ";
78. $sql .= " value('".MONITORED_IP."','".$status['cpu_usage']."','".$status['mem_usage']."','".$status['hd_avail']."','".$status['hd_usage']."','".$status['tast_running']."','".$status['detection_time']."')";
79. $query = mysql_query($sql) or die("SQL 语句执行失败!");
80. unset($status);
82. //echo date("Y-m-d H:i:s",time())."
    ";
83. ?>