Shell脚本分析服务器性能

不念不忘少年蓝@ 2023-06-05 08:57 19阅读 0赞

## **概述** ##

**我们原先在服务器上想分析性能指标，需要执行一系列的linux命令。对于linux命令不熟悉的人来说，比较困难**

**现在有一套集成的shell脚本，把常用的linux命令都包含在里面，一键式分析性能瓶颈**

## **脚本功能** ##

1、查看CPU利用率与负载（top、vmstat、sar）

2、查看磁盘、Inode利用率与I/O负载（df、iostat、iotop、sar、dstat）

3、查看内存利用率（free、vmstat）

4、查看TCP连接状态（netstat、ss）

5、查看CPU与内存占用最高的10个进程（top、ps）

6、查看网络流量（ifconfig、iftop、iptraf）

## 脚本如下 ##

#!/bin/bash
    #
    os_check() {
            if [ -e /etc/redhat-release ]; then
                    REDHAT=`cat /etc/redhat-release |cut -d' '  -f1`
            else
                    DEBIAN=`cat /etc/issue |cut -d' ' -f1`
            fi
            if [ "$REDHAT" == "CentOS" -o "$REDHAT" == "Red" ]; then
                    P_M=yum
            elif [ "$DEBIAN" == "Ubuntu" -o "$DEBIAN" == "ubutnu" ]; then
                    P_M=apt-get
            else
                    Operating system does not support.
                    exit 1
            fi
    }
    if [ $LOGNAME != root ]; then
        echo "Please use the root account operation."
        exit 1
    fi
    if ! which vmstat &>/dev/null; then
            echo "vmstat command not found, now the install."
            sleep 1
            os_check
            $P_M install procps -y
            echo "-----------------------------------------------------------------------"
    fi
    if ! which iostat &>/dev/null; then
            echo "iostat command not found, now the install."
            sleep 1
            os_check
            $P_M install sysstat -y
            echo "-----------------------------------------------------------------------"
    fi
    
    while true; do
        select input in cpu_load disk_load disk_use disk_inode mem_use tcp_status cpu_top10 mem_top10 traffic quit; do
            case $input in
                cpu_load)
                    #CPU利用率与负载
                    echo "---------------------------------------"
                    i=1
                    while [[ $i -le 3 ]]; do
                        echo -e "\033[32m  参考值${i}\033[0m"
                        UTIL=`vmstat |awk '{if(NR==3)print 100-$15"%"}'`
                        USER=`vmstat |awk '{if(NR==3)print $13"%"}'`
                        SYS=`vmstat |awk '{if(NR==3)print $14"%"}'`
                        IOWAIT=`vmstat |awk '{if(NR==3)print $16"%"}'`
                        echo "Util: $UTIL"
                        echo "User use: $USER"
                        echo "System use: $SYS"
                        echo "I/O wait: $IOWAIT"
                        i=$(($i+1))
                        sleep 1
                    done
                    echo "---------------------------------------"
                    break
                    ;;
                disk_load)
                    #硬盘I/O负载
                    echo "---------------------------------------"
                    i=1
                    while [[ $i -le 3 ]]; do
                        echo -e "\033[32m  参考值${i}\033[0m"
                        UTIL=`iostat -x -k |awk '/^[v|s]/{OFS=": ";print $1,$NF"%"}'`
                        READ=`iostat -x -k |awk '/^[v|s]/{OFS=": ";print $1,$6"KB"}'`
                        WRITE=`iostat -x -k |awk '/^[v|s]/{OFS=": ";print $1,$7"KB"}'`
                        IOWAIT=`vmstat |awk '{if(NR==3)print $16"%"}'`
                        echo -e "Util:"
                        echo -e "${UTIL}"
                        echo -e "I/O Wait: $IOWAIT"
                        echo -e "Read/s:\n$READ"
                        echo -e "Write/s:\n$WRITE"
                        i=$(($i+1))
                        sleep 1
                    done
                    echo "---------------------------------------"
                    break
                    ;;
                disk_use)
                    #硬盘利用率
                    DISK_LOG=/tmp/disk_use.tmp
                    DISK_TOTAL=`fdisk -l |awk '/^Disk.*bytes/&&/\/dev/{printf $2" ";printf "%d",$3;print "GB"}'`
                    USE_RATE=`df -h |awk '/^\/dev/{print int($5)}'`
                    for i in $USE_RATE; do
                        if [ $i -gt 90 ];then
                            PART=`df -h |awk '{if(int($5)=='''$i''') print $6}'`
                            echo "$PART = ${i}%" >> $DISK_LOG
                        fi
                    done
                    echo "---------------------------------------"
                    echo -e "Disk total:\n${DISK_TOTAL}"
                    if [ -f $DISK_LOG ]; then
                        echo "---------------------------------------"
                        cat $DISK_LOG
                        echo "---------------------------------------"
                        rm -f $DISK_LOG
                    else
                        echo "---------------------------------------"
                        echo "Disk use rate no than 90% of the partition."
                        echo "---------------------------------------"
                    fi
                    break
                    ;;
                disk_inode)
                    #硬盘inode利用率
                    INODE_LOG=/tmp/inode_use.tmp
                    INODE_USE=`df -i |awk '/^\/dev/{print int($5)}'`
                    for i in $INODE_USE; do
                        if [ $i -gt 90 ]; then
                            PART=`df -h |awk '{if(int($5)=='''$i''') print $6}'`
                            echo "$PART = ${i}%" >> $INODE_LOG
                        fi
                    done
                    if [ -f $INODE_LOG ]; then
                        echo "---------------------------------------"
                        rm -f $INODE_LOG
                    else
                        echo "---------------------------------------"
                        echo "Inode use rate no than 90% of the partition."
                        echo "---------------------------------------"
                    fi
                    break
                    ;;
                mem_use)
                    #内存利用率
                    echo "---------------------------------------"
                    MEM_TOTAL=`free -m |awk '{if(NR==2)printf "%.1f",$2/1024}END{print "G"}'`
                    USE=`free -m |awk '{if(NR==3) printf "%.1f",$3/1024}END{print "G"}'`
                    FREE=`free -m |awk '{if(NR==3) printf "%.1f",$4/1024}END{print "G"}'`
                    CACHE=`free -m |awk '{if(NR==2) printf "%.1f",($6+$7)/1024}END{print "G"}'`
                    echo -e "Total: $MEM_TOTAL"
                    echo -e "Use: $USE"
                    echo -e "Free: $FREE"
                    echo -e "Cache: $CACHE"
                    echo "---------------------------------------"
                    break
                    ;;
                tcp_status)
                    #网络连接状态
                    echo "---------------------------------------"
                    COUNT=`netstat -antp |awk '{status[$6]++}END{for(i in status) print i,status[i]}'`
                    echo -e "TCP connection status:\n$COUNT"
                    echo "---------------------------------------"
                    ;;
                cpu_top10)
                    #占用CPU高的前10个进程
                    echo "---------------------------------------"
                    CPU_LOG=/tmp/cpu_top.tmp
                    i=1
                    while [[ $i -le 3 ]]; do
                        #ps aux |awk '{if($3>0.1)print "CPU: "$3"% -->",$11,$12,$13,$14,$15,$16,"(PID:"$2")" |"sort -k2 -nr |head -n 10"}' > $CPU_LOG
                        ps aux |awk '{if($3>0.1){
        {printf "PID: "$2" CPU: "$3"% --> "}for(i=11;i<=NF;i++)if(i==NF)printf $i"\n";else printf $i}}' |sort -k4 -nr |head -10 > $CPU_LOG
                        #循环从11列（进程名）开始打印，如果i等于最后一行，就打印i的列并换行，否则就打印i的列
                        if [[ -n `cat $CPU_LOG` ]]; then
                           echo -e "\033[32m  参考值${i}\033[0m"
                           cat $CPU_LOG
                           > $CPU_LOG
                        else
                            echo "No process using the CPU." 
                            break
                        fi
                        i=$(($i+1))
                        sleep 1
                    done
                    echo "---------------------------------------"
                    break
                    ;;
                mem_top10)
                    #占用内存高的前10个进程
                    echo "---------------------------------------"
                    MEM_LOG=/tmp/mem_top.tmp
                    i=1
                    while [[ $i -le 3 ]]; do
                        #ps aux |awk '{if($4>0.1)print "Memory: "$4"% -->",$11,$12,$13,$14,$15,$16,"(PID:"$2")" |"sort -k2 -nr |head -n 10"}' > $MEM_LOG
                        ps aux |awk '{if($4>0.1){
        {printf "PID: "$2" Memory: "$3"% --> "}for(i=11;i<=NF;i++)if(i==NF)printf $i"\n";else printf $i}}' |sort -k4 -nr |head -10 > $MEM_LOG
                        if [[ -n `cat $MEM_LOG` ]]; then
                            echo -e "\033[32m  参考值${i}\033[0m"
                            cat $MEM_LOG
                            > $MEM_LOG
                        else
                            echo "No process using the Memory."
                            break
                        fi
                        i=$(($i+1))
                        sleep 1
                    done
                    echo "---------------------------------------"
                    break
                    ;;
                traffic)
                    #查看网络流量
                    while true; do
                        read -p "Please enter the network card name(eth[0-9] or em[0-9]): " eth
                        #if [[ $eth =~ ^eth[0-9]$ ]] || [[ $eth =~ ^em[0-9]$ ]] && [[ `ifconfig |grep -c "\<$eth\>"` -eq 1 ]]; then
                        if [ `ifconfig |grep -c "\<$eth\>"` -eq 1 ]; then
                                break
                        else
                            echo "Input format error or Don't have the card name, please input again."
                        fi
                    done
                    echo "---------------------------------------"
                    echo -e " In ------ Out"
                    i=1
                    while [[ $i -le 3 ]]; do
                        #OLD_IN=`ifconfig $eth |awk '/RX bytes/{print $2}' |cut -d: -f2`
                        #OLD_OUT=`ifconfig $eth |awk '/RX bytes/{print $6}' |cut -d: -f2`
                        OLD_IN=`ifconfig $eth |awk -F'[: ]+' '/bytes/{if(NR==8)print $4;else if(NR==5)print $6}'`
                        #CentOS6和CentOS7 ifconfig输出进出流量信息位置不同，CentOS6中RX与TX行号等于8，CentOS7中RX行号是5，TX行号是5，所以就做了个判断.       
                        OLD_OUT=`ifconfig $eth |awk -F'[: ]+' '/bytes/{if(NR==8)print $9;else if(NR==7)print $6}'`
                        sleep 1
                        NEW_IN=`ifconfig $eth |awk -F'[: ]+' '/bytes/{if(NR==8)print $4;else if(NR==5)print $6}'`
                        NEW_OUT=`ifconfig $eth |awk -F'[: ]+' '/bytes/{if(NR==8)print $9;else if(NR==7)print $6}'`
                        IN=`awk 'BEGIN{printf "%.1f\n",'$((${NEW_IN}-${OLD_IN}))'/1024/128}'`
                        OUT=`awk 'BEGIN{printf "%.1f\n",'$((${NEW_OUT}-${OLD_OUT}))'/1024/128}'`
                        echo "${IN}MB/s ${OUT}MB/s"
                        i=$(($i+1))
                        sleep 1
                    done
                    echo "---------------------------------------"
                    break
                    ;;
                            quit)
                                    exit 0
                                    ;;
                   *)
                        echo "---------------------------------------"
                        echo "Please enter the number." 
                        echo "---------------------------------------"
                        break
                        ;;
            esac
        done
    done

## **运行效果如下** ##

**\# sh show\_sys\_info.sh**

**![946454-20190909140701230-1832808051.png][]**

### **1）cpu\_load：分析cpu** ###

**![946454-20190909140831492-1522186282.png][]**

util：cpu已使用百分比

user use：用户使用cpu百分比

system use：系统使用cpu百分比

I/O wait：I/O等待百分比

三次刷新，间隔时间1s

**2）disk\_load 分析磁盘**

**![946454-20190909141513698-920660452.png][]**

Util：每秒磁盘处理的百分比  
vda：  
I/O Wait：IO等待时间  
Read/s：每秒磁盘读数据量  
vda：  
Write/s：每秒磁盘写数据量  
vda：

### **3）disk\_use 磁盘使用情况** ###

**![946454-20190909142645636-147744309.png][]**

### **disk total：打印磁盘数量和磁盘分区使用情况** ###

### **4）disk\_inode  如果有磁盘inodo超过90%，这里会打印出来** ###

### **5）mem\_use  内存占用情况** ###

**![946454-20190909143354116-117122201.png][]**

Total：总内存

use：已使用内存

free：剩余内存

cache：缓存占用内存

### **6）tcp\_status tcp状态 ** ###

**![946454-20190909144403480-753849126.png][]**

### **7）cpu\_top10 占用cpu最大的十个进程**    ###

### **8）mem\_top10 占用内存最大的十个进程** ###

### **9）traffic 查看网卡进出流量 ** ###

**![946454-20190909144959556-2088249271.png][]**

转载于:https://www.cnblogs.com/Zfc-Cjk/p/11490648.html

[946454-20190909140701230-1832808051.png]: /images/20230601/0b205acfa5be4ce99f80496b9a065858.png
[946454-20190909140831492-1522186282.png]: /images/20230601/26606de1f8ad43fb9980a891da94f114.png
[946454-20190909141513698-920660452.png]: /images/20230601/c51f4e090c914f389043075770d59a0e.png
[946454-20190909142645636-147744309.png]: /images/20230601/323671868f4e44758bf5731d5e025c00.png
[946454-20190909143354116-117122201.png]: /images/20230601/6bb401981581413eab8e5a61cc81ca9b.png
[946454-20190909144403480-753849126.png]: /images/20230601/fca28df19596415f9d40010451f40278.png
[946454-20190909144959556-2088249271.png]: /images/20230601/7aba7e2ea1fc4212932c94958ef3333d.png