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「实战笔记」查看CPU、磁盘、内存、TCP及网络流量的脚本

#————————————————————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5个进程(top、ps)
#6、查看网络流量(ifconfig、iftop、iptraf)
#————————————————————脚本功能——————————————————————————————————#
#!/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_top5 mem_top5 traffic quit; do
        case $input in
            cpu_load)
                #CPU利用率与负载
                echo "---------------------------------------"
                i=1
                while [[ $i -le 3 ]]; do
                    echo -e "33[32m  刷新次数${i}33[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 [[ $i -le 3 ]]; do
                    echo -e "33[32m  刷新次数${i}33[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:
$READ"
                    echo -e "Write/s:
$WRITE"
                    i=$(($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:
${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:
$COUNT"
                echo "---------------------------------------"
                ;;
            cpu_top5)
                #占用CPU高的前5个进程
                echo "---------------------------------------"
                CPU_LOG=/tmp/cpu_top.tmp
                i=1
                while [[ $i -le 5 ]]; do
                    ps aux |awk '{if($3>0.1){{printf "PID: "$2" CPU: "$3"% --> "}for(i=11;i<=NF;i++)if(i==NF)printf $i"***
";else printf $i" "}}' |sort -k4 -nr |head -5 > $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 $CPU_LOG` ]]; then
                       echo -e "33[32m  刷新次数${i}33[0m"
                       cat $CPU_LOG
                       > $CPU_LOG
                    else
                        echo "No process using the CPU." 
                        break
                    fi
                    i=$(($i+1))
                    sleep 2
                done
                echo "---------------------------------------"
                break
                ;;
            mem_top5)
                #占用内存高的前5个进程
                echo "---------------------------------------"
                MEM_LOG=/tmp/mem_top.tmp
                i=1
                while [[ $i -le 5 ]]; do
                    ps aux |awk '{if($4>0.1){{printf "PID: "$2" Memory: "$3"% --> "}for(i=11;i<=NF;i++)if(i==NF)printf $i"***
";else printf $i" "}}' |sort -k4 -nr |head -5 > $MEM_LOG
                    if [[ -n `cat $MEM_LOG` ]]; then
                        echo -e "33[32m  刷新次数${i}33[0m"
                        cat $MEM_LOG
                        > $MEM_LOG
                    else
                        echo "No process using the Memory."
                        break
                    fi
                    i=$(($i+1))
                    sleep 2
                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 -F'[: ]+' '/bytes/{if(NR==7)print $4;else if(NR==5)print $6}'`
                    OLD_OUT=`ifconfig $eth |awk -F'[: ]+' '/bytes/{if(NR==7)print $9;else if(NR==7)print $6}'`
                    sleep 1
                    NEW_IN=`ifconfig $eth |awk -F'[: ]+' '/bytes/{if(NR==7)print $4;else if(NR==5)print $6}'`
                    NEW_OUT=`ifconfig $eth |awk -F'[: ]+' '/bytes/{if(NR==7)print $9;else if(NR==7)print $6}'`
                    IN=`awk 'BEGIN{printf "%.1f
",'$((${NEW_IN}-${OLD_IN}))'/1024/128}'`
                    OUT=`awk 'BEGIN{printf "%.1f
",'$((${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


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  • 2017-09-26 14:27:00

    sudo /usr/local/cloudmonitor/wrapper/bin/cloudmonitor.sh restart

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