查询服务器CPU、内存、磁盘、网络IO、队列、数据库占用空间等等信息

文章目录

• 摘要
• • 1. 查询CPU使用率命令：top -bn1 | grep \"Cpu(s)\" | awk '{split($0,arr,\" \");print 100-arr[8]}'
  • 2. 查询内存命令（单位：G）：top -bn1 | grep \"KiB Mem\" | awk '{split($0,arr,\" \");print arr[4]/1024/1024,arr[8]/1024/1024}'
  • 3.查询磁盘命令：df -h / | tail -n +2 | grep -v "Filesystem" | awk '{split($0,arr," ");print arr[2],arr[3],arr[5]}'
  • 4.查询网络IO命令：ifstat
  • 5.查询文件服务器中数据库空间占用大小命令：df -h /home/ems/3rdparty/mysql/data
  • 6.查询每秒存储队列信息命令：vmstat -d|grep sda|awk '{print $11}'
  • 7.查询IOPS信息命令：iostat -d|grep sda|awk '{print $3" "$4}'
  • 8.查询文件系统中磁盘使用情况命令：df -BG
• 代码

摘要

1. 查询CPU使用率命令：top -bn1 | grep “Cpu(s)” | awk ‘{split($0,arr," ");print 100-arr[8]}’

[root@unm5800 ~]# top -bn1 | grep "Cpu(s)" | awk '{split($0,arr," ");print 100-arr[8]}' 8.7 

2. 查询内存命令（单位：G）：top -bn1 | grep “KiB Mem” | awk ‘{split($0,arr," ");print arr[4]/1024/1024,arr[8]/1024/1024}’

[root@unm5800 ~]# top -bn1 | grep "KiB Mem" | awk '{split($0,arr," ");print arr[4]/1024/1024,arr[8]/1024/1024}' 15.1709 9.70124 

3.查询磁盘命令：df -h / | tail -n +2 | grep -v “Filesystem” | awk ‘{split($0,arr," ");print arr[2],arr[3],arr[5]}’

[root@unm5800 ~]# df -h / | tail -n +2 | grep -v "Filesystem" | awk '{split($0,arr," ");print arr[2],arr[3],arr[5]}' 296G 153G 55% 

4.查询网络IO命令：ifstat

[root@unm5800 ~]# ifstat #kernel Interface        RX Pkts/Rate    TX Pkts/Rate    RX Data/Rate    TX Data/Rate                    RX Errs/Drop    TX Errs/Drop    RX Over/Rate    TX Coll/Rate   lo                10764K 0        10764K 0      18446744070881M 0      18446744070881M 0                              0 0             0 0             0 0             0 0       enp91s0f0          9181K 0        19534K 0      18446744071947M 0       220464K 0                              0 0             0 0             0 0             0 0       enp91s0f1              0 0             0 0             0 0             0 0                              0 0             0 0             0 0             0 0       eno1              609746 0         1161K 0       128777K 0       940272K 0                              0 4546          0 0             0 0             0 0       enp91s0f2              0 0             0 0             0 0             0 0                              0 0             0 0             0 0             0 0       eno2                   0 0             0 0             0 0             0 0                              0 0             0 0             0 0             0 0       enp91s0f3              0 0             0 0             0 0             0 0                              0 0             0 0             0 0             0 0       enp0s20f0u1u6      31847 0             0 0         2316K 0             0 0                              0 0             0 0             0 0             0 0       virbr0                 0 0             0 0             0 0             0 0                              0 0             0 0             0 0             0 0       docker0                0 0             0 0             0 0             0 0                              0 0             0 0             0 0             0 0       br-070bd1b4b466        0 0             0 0             0 0             0 0                              0 0             0 0             0 0             0 0       br-08fd260a964c        0 0             0 0             0 0             0 0                              0 0             0 0             0 0             0 0       br-67b9049e39d6     1494 0          1494 0         59760 0        170316 0                              0 0             0 0             0 0             0 0       br-e3d56b9f14ab        0 0             0 0             0 0             0 0                              0 0             0 0             0 0             0 0       br-014f940f0996        0 0             0 0             0 0             0 0                              0 0             0 0             0 0             0 0       vethf216528            0 0             0 0             0 0             0 0                              0 0             0 0             0 0             0 0       veth930c642            0 0             0 0             0 0             0 0                              0 0             0 0             0 0             0 0       veth5bb57ee            0 0             0 0             0 0             0 0                              0 0             0 0             0 0             0 0       veth154692a            0 0             0 0             0 0             0 0                              0 0             0 0             0 0             0 0       vethc30949a         1494 0          1494 0         80676 0        170316 0                              0 0             0 0             0 0             0 0       veth821f11e            0 0             0 0             0 0             0 0                              0 0             0 0             0 0             0 0       veth6bb839e            0 0             0 0             0 0             0 0                              0 0             0 0             0 0             0 0       veth9671271            0 0             0 0             0 0             0 0                              0 0             0 0             0 0             0 0 

这些字段是用于描述ifstat命令输出结果中的网络接口的信息。下面是对这些字段的介绍：

• ifstat <网络接口名称>
• Interface（接口）：网络接口的名称。
• RX Pkts/Rate（接收数据包数/速率）：接收的数据包数量和速率。
• TX Pkts/Rate（发送数据包数/速率）：发送的数据包数量和速率。
• RX Data/Rate（接收数据量/速率）：接收的数据量（以字节为单位）和速率。
• TX Data/Rate（发送数据量/速率）：发送的数据量（以字节为单位）和速率。
• RX Errs/Drop（接收错误/丢弃）：接收过程中产生的错误和丢弃的数据包数量。
• TX Errs/Drop（发送错误/丢弃）：发送过程中产生的错误和丢弃的数据包数量。
• RX Over/Rate（接收溢出/速率）：接收缓冲区溢出次数和速率。
• TX Coll/Rate（发送冲突/速率）：发送时发生碰撞的次数和速率。 这些字段提供了关于网络接口的

详细统计信息，包括数据包数量、数据量、速率、错误情况、丢弃情况、溢出情况和碰撞情况等。通过观察这些字段的数值，可以了解网络接口的使用情况、性能状况和可能存在的问题。

5.查询文件服务器中数据库空间占用大小命令：df -h /home/ems/3rdparty/mysql/data

[root@unm5800 ~]# df -h /home/ems/3rdparty/mysql/data 文件系统        容量    已用    可用   已用%   挂载点 /dev/sda1       296G  153G  128G   55%         / 

6.查询每秒存储队列信息命令：vmstat -d|grep sda|awk ‘{print $11}’

[root@unm5800 ~]# vmstat -d|grep sda|awk '{print $11}' 28415 

vmstat -d命令 disk- ------------reads------------ ------------writes----------- -----IO------ total merged sectors      ms  total merged sectors      ms    cur    sec sda   6321733 2992979 326537984 192604637 16335233 11611252 558374392 397953929      0 159463 dm-0  2017377      0 126201641 106958407 7052267      0 129722136 163552294      0  85875 dm-1  4396348      0 35174488 92541369 10793514      0 86348112 1687958320      0  21982 dm-2  3184149      0 165098377 75003459 6532775      0 342299704 396611035      0  89434 

根据您提供的 vmstat -d 命令输出，磁盘统计信息中显示了以下设备：

• sda：这是一个磁盘设备的名称，通常代表物理磁盘。它可能是你的系统上的主要硬盘。
• dm-0、dm-1、dm-2：这些是表示设备映射（Device Mapper）的块设备名称。在 Linux 系统中，dm- 表示逻辑卷（Logical Volume）或软件 RAID（Redundant Array of Independent Disks）。
  Device Mapper 是 Linux 内核提供的一个模块，用于进行逻辑卷管理、软件 RAID、加密存储等操作。这些逻辑卷或软件 RAID 经过设备映射后，可以在操作系统中当作普通块设备使用。
  因此，vmstat -d 命令输出显示了系统上的物理磁盘 sda 和经过设备映射的逻辑卷或软件 RAID dm-0、dm-1、dm-2 的磁盘统计信息。

根据您提供的 vmstat -d 命令输出中的 sec 值为 159463，它表示每秒的输入/输出操作数。这个值是计算从系统启动到当前时刻的累积值。

在 vmstat -d 命令的输出中，sec 表示系统每秒钟处理的输入和输出操作的数量。这包括从磁盘读取的数据量、向磁盘写入的数据量以及其他可能的输入/输出操作（如网络数据传输等）。
因此，sec 值代表每秒的输入/输出操作数，既包括读取操作也包括写入操作。

7.查询IOPS信息命令：iostat -d|grep sda|awk ‘{print $3" "$4}’

[root@unm5800 ~]# iostat -d|grep sda|awk '{print $3" "$4}' 220.44 3219.56 

iostat -d  是一个 Linux 命令，用于显示块设备的输入/输出统计信息。该命令会提供有关磁盘和存储设备的各种性能指标。 Linux 3.10.0-1160.el7.x86_64 (localhost.localdomain)    2023年08月16日  _x86_64_        (4 CPU) Device:            tps    kB_read/s    kB_wrtn/s    kB_read    kB_wrtn sda              17.50       126.18       215.67  163243972  279015092 dm-0              7.00        48.77        50.08   63099436   64789492 dm-1             11.74        13.59        33.37   17587244   43174056 dm-2              7.51        63.79       132.21   82525552  171049324 

运行 iostat -d 命令会显示如下信息：

• Device（设备）：列出了系统中的每个块设备，如硬盘驱动器、固态硬盘等。
• tps（每秒传输请求数）：表示每秒传输到设备的 I/O 请求的数量。包括读请求和写请求。
• kB_read/s（每秒读取数据量）：表示每秒从设备读取的数据量。
• kB_wrtn/s（每秒写入数据量）：表示每秒写入设备的数据量。
• kB_read（读取的总数据量）：表示自系统启动以来从设备读取的总数据量。
• kB_written（写入的总数据量）：表示自系统启动以来写入设备的总数据量。

这些指标可以帮助你了解块设备的性能状况，包括每秒的传输请求数量、读写速度以及设备的总体活动情况。

8.查询文件系统中磁盘使用情况命令：df -BG

[root@unm5800 ~]# df -BG 文件系统       1G-块  已用  可用 已用% 挂载点 devtmpfs          8G    0G    8G    0% /dev tmpfs             8G    1G    8G    1% /dev/shm tmpfs             8G    1G    7G   11% /run tmpfs             8G    0G    8G    0% /sys/fs/cgroup /dev/sda1       296G  153G  128G   55% / overlay         296G  153G  128G   55% /var/lib/docker/overlay2/a42d4eb53de76f220eadbacbeecf268c53bc130615f5faf1b0472801bcae4492/merged overlay         296G  153G  128G   55% /var/lib/docker/overlay2/59b75e561bd8b29088b503779940edbd2a0ad5518994e55a01db625407dfcf12/merged overlay         296G  153G  128G   55% /var/lib/docker/overlay2/c7a3fd966d533eff6c199de317f6e815d6a1147665a7d81370fa71f4320df410/merged overlay         296G  153G  128G   55% /var/lib/docker/overlay2/e3c1fe4e379a56b230e40d07d17cce6ba0330aebf3d25e85aa5d9e09ed2ee30a/merged overlay         296G  153G  128G   55% /var/lib/docker/overlay2/2a5ea591d02955647e5f6c9e566b5c6a99d6ebed817bdc4c410e7b627c690622/merged shm               1G    0G    1G    0% /var/lib/docker/containers/d6ad7cbc285e3e8d15477c891aded41533f6032c0a46297123a013ef35c12bd6/mounts/shm shm               1G    0G    1G    0% /var/lib/docker/containers/f3ac596eb8e7a8a0454c8a90f3c1b23e52c5aab23911b335cbba3f5ed7f98574/mounts/shm shm               1G    0G    1G    0% /var/lib/docker/containers/ccc00bbe149d20d0af4b8ccc581eebed79488742b06c21a93d1e4854d1ff0c83/mounts/shm shm               1G    1G    1G    1% /var/lib/docker/containers/78f5e497c3104bd442776a272aac2d08abc1a2cdd8e8b917b44ee49e3b7f407a/mounts/shm shm               1G    0G    1G    0% /var/lib/docker/containers/19835c87c59e5f6bb3f96f929b70076dc3d418089afe80aec63a7692a994b546/mounts/shm tmpfs             2G    0G    2G    0% /run/user/0 

代码

package com.util;  import org.junit.jupiter.api.Test; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.util.StringUtils; import util.bean.MonitorPo;  import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.text.DecimalFormat;  public class StringUtilsTests2 {     private static Logger log = LoggerFactory.getLogger(StringUtilsTests2.class);          @Test     void parseString1() {         MonitorPo monitorPo = new MonitorPo();         InputStream in = null;         BufferedReader read = null;         Process pro = null;         String cmd = "";         String[] cmds = null;         try {             getCPUInfo(cmd, cmds, monitorPo, pro, in, read);             getMemoryInfo(cmd, cmds, monitorPo, pro, in, read);             getDiskInfo(cmd, cmds, monitorPo, pro, in, read);             getNetworkResourceInformation(cmd, cmds, monitorPo, pro, in, read);             getUsageOfTheMysqlDiskSpaceInTheFileSystem(cmd, cmds, monitorPo, pro, in, read);             getUsageOfTheDiskSpaceInTheFileSystem(cmd, cmds, monitorPo, pro, in, read);             getIopsResourceInformation(cmd, cmds, monitorPo, pro, in, read);             getStoresQueueInputOrOutputOperandsPerSecond(cmd, cmds, monitorPo, pro, in, read);         } catch (IOException|InterruptedException e) {             log.error("-realTimeMonitoring-Exception:{}", e);         } finally {             try {                 if (pro != null)                     pro.destroy();                 if (read != null)                     read.close();                 if (in != null)                     in.close();             } catch (IOException e) {                 log.error("-realTimeMonitoring-finally-IOException:{}", e);             }         }     }      //查询CPU     private static void getCPUInfo(String cmd, String[] cmds, MonitorPo monitorPo, Process pro, InputStream in, BufferedReader read) throws IOException, InterruptedException {         cmd = "top -bn1 | grep \"Cpu(s)\" | awk '{split($0,arr,\" \");print 100-arr[8]}'";         String result = getSingleResult(cmd, cmds, pro, in, read);         if (!StringUtils.isEmpty(result)) {             monitorPo.setCpu(Double.valueOf(Double.parseDouble(result)));         } else {             monitorPo.setCpu(Double.valueOf(0.0D));         }     }      //查询内存     private static void getMemoryInfo(String cmd, String[] cmds, MonitorPo monitorPo, Process pro, InputStream in, BufferedReader read) throws IOException, InterruptedException {         cmd = "top -bn1 | grep \"KiB Mem\" | awk '{split($0,arr,\" \");print arr[4]/1024/1024,arr[8]/1024/1024}'";         String result = getSingleResult(cmd, cmds, pro, in, read);         String[] arr = result.split(" ");         double memoryTotal = Double.parseDouble(arr[0]);         double memoryUsed = Double.parseDouble(arr[1]);         DecimalFormat df = new DecimalFormat("#.##");         double memoryUseRatio = Double.parseDouble(df.format(memoryUsed / memoryTotal * 100.0D));         monitorPo.setMemoryTotal(Double.valueOf(memoryTotal));         monitorPo.setMemory(Double.valueOf(memoryUsed));         monitorPo.setMemoryUseRatio(Double.valueOf(memoryUseRatio));     }      //查询磁盘     private static void getDiskInfo(String cmd, String[] cmds, MonitorPo monitorPo, Process pro, InputStream in, BufferedReader read) throws IOException, InterruptedException {         cmd = "df -h / | tail -n +2 | grep -v \"Filesystem\" | awk '{split($0,arr,\" \");print arr[2],arr[3],arr[5]}'";         String result = getSingleResult(cmd, cmds, pro, in, read);         String[] arr = result.split(" ");         monitorPo.setDiskTotal(Double.valueOf(Double.parseDouble(arr[0].replaceAll("G", ""))));         monitorPo.setDiskUse(Double.valueOf(Double.parseDouble(arr[1].replaceAll("G", ""))));         monitorPo.setDiskUseRatio(Double.valueOf(Double.parseDouble(arr[2].replaceAll("%", ""))));     }      //查询网络IO速率     public static void getNetworkResourceInformation(String cmd, String[] cmds, MonitorPo monitorPo, Process pro, InputStream in, BufferedReader read) throws IOException, InterruptedException {         log.info("-getNetworkResourceInformation");         cmd = "ifstat";         cmds = new String[] { "/bin/sh", "-c", cmd };         log.info("-cmd:{}", cmd);         pro = Runtime.getRuntime().exec(cmds);         if (pro.waitFor() == 0) {             in = pro.getInputStream();             read = new BufferedReader(new InputStreamReader(in));             String line;             while ((line = read.readLine()) != null) {                 log.info("-line:{}", line);                 if (line.startsWith("eno") || line.startsWith("eth")) {                     String[] split = line.split("\\s+");                     String networkRxRate = split[1];                     String networkTxRate = split[3];                     monitorPo.setNetworkRxRate(Double.valueOf(Double.parseDouble(networkRxRate)));                     monitorPo.setNetworkTxRate(Double.valueOf(Double.parseDouble(networkTxRate)));                     break;                 }             }         }     }      //查询文件服务器中数据库空间占用大小     public static void getUsageOfTheMysqlDiskSpaceInTheFileSystem(String cmd, String[] cmds, MonitorPo monitorPo, Process pro, InputStream in, BufferedReader read) throws IOException, InterruptedException {         log.info("-getUsageOfTheMysqlDiskSpaceInTheFileSystem");         cmd = "df -h /home/ems/3rdparty/mysql/data";         cmds = new String[] { "/bin/sh", "-c", cmd };         log.info("-cmd:{}", cmd);         pro = Runtime.getRuntime().exec(cmds);         if (pro.waitFor() == 0) {             in = pro.getInputStream();             read = new BufferedReader(new InputStreamReader(in));             String line;             while ((line = read.readLine()) != null) {                 log.info("-line:{}", line);                 if (line.startsWith("/dev")) {                     String[] split = line.split("\\s+");                     monitorPo.setDatabaseDiskSpaceIsUsed(split[2]);                 }             }         }     }      //查询每秒存储队列信息     public static void getStoresQueueInputOrOutputOperandsPerSecond(String cmd, String[] cmds, MonitorPo monitorPo, Process pro, InputStream in, BufferedReader read) throws IOException, InterruptedException {         log.info("-getStoresQueueInputOrOutputOperandsPerSecond");         cmd = "vmstat -d|grep sda|awk '{print $11}'";         cmds = new String[] { "/bin/sh", "-c", cmd };         log.info("-cmd:{}", cmd);         pro = Runtime.getRuntime().exec(cmds);         if (pro.waitFor() == 0) {             in = pro.getInputStream();             read = new BufferedReader(new InputStreamReader(in));             String line;             while ((line = read.readLine()) != null) {                 log.info("-line:{}", line);                 monitorPo.setQueueOperands(Double.valueOf(Double.parseDouble(line)));             }         }     }      //查询IOPS信息     public static void getIopsResourceInformation(String cmd, String[] cmds, MonitorPo monitorPo, Process pro, InputStream in, BufferedReader read) throws IOException, InterruptedException {         log.info("-getIopsResourceInformation");         cmd = "iostat -d|grep sda|awk '{print $3\" \"$4}'";         cmds = new String[] { "/bin/sh", "-c", cmd };         log.info("-cmd:{}", cmd);         pro = Runtime.getRuntime().exec(cmds);         if (pro.waitFor() == 0) {             in = pro.getInputStream();             read = new BufferedReader(new InputStreamReader(in));             String line;             while ((line = read.readLine()) != null) {                 log.info("-line:{}", line);                 String[] split = line.split("\\s+");                 String IOPSKbRead = split[0];                 String IOPSKbWrite = split[1];                 monitorPo.setIopsKbRead(Double.valueOf(Double.parseDouble(IOPSKbRead)));                 monitorPo.setIopsKbWrite(Double.valueOf(Double.parseDouble(IOPSKbWrite)));             }         }     }      //查询文件系统中磁盘使用情况     public static void getUsageOfTheDiskSpaceInTheFileSystem(String cmd, String[] cmds, MonitorPo monitorPo, Process pro, InputStream in, BufferedReader read) throws IOException, InterruptedException {         log.info("-getUsageOfTheDiskSpaceInTheFileSystem");         cmd = "df -BG";         cmds = new String[] { "/bin/sh", "-c", cmd };         log.info("-cmd:{}", cmd);         pro = Runtime.getRuntime().exec(cmds);         if (pro.waitFor() == 0) {             in = pro.getInputStream();             read = new BufferedReader(new InputStreamReader(in));             String line;             while ((line = read.readLine()) != null) {                 log.info("-line:{}", line);                 if (line.endsWith("/")) {                     String[] split = line.split("\\s+");                     String used = split[2];                     if (used.contains("G"))                         used = used.replace("G", "");                     monitorPo.setDiskSpaceIsUsed(Double.valueOf(Double.parseDouble(used)));                 }             }         }     }      //java执行linux命令     public static String getSingleResult(String cmd, String[] cmds, Process pro, InputStream in, BufferedReader read) throws IOException, InterruptedException {         cmds = new String[] { "/bin/sh", "-c", cmd };         log.info("-cmd:{}", cmd);         pro = Runtime.getRuntime().exec(cmds);         String line = "";         in = pro.getInputStream();         read = new BufferedReader(new InputStreamReader(in));         if (pro.waitFor() == 0 && (line = read.readLine()) != null) {             log.info("-line:{}", line);             return line;         }         return null;     } }