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

雨点打透心脏的1/2处 2024-02-05 12:17 0阅读 0赞

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#### 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;
        }
    }

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